Datasheet

ManualsBrandsST ManualsEmbedded Processors & ControllersMicrocontroller 32bit 32KB TSSOP

This is information on a product in full production.

January 2015 DocID027114 Rev 2 1/88

STM32F070xB STM32F070x6

ARM

-based 32-bit MCU, up to 128 KB Flash, USB FS 2.0,

11 timers, ADC, communication interfaces, 2.4 - 3.6 V

Datasheet - production data

Features

• Core: ARM

32-bit Cortex

-M0 CPU,

frequency up to 48 MHz

• Memories

– 32 to 128 Kbytes of Flash memory

– 6 to 16 Kbytes of SRAM with HW parity

• CRC calculation unit

• Reset and power management

– Digital & I/Os supply: V

= 2.4 V to 3.6 V

– Analog supply: V

DDA

= V

to 3.6 V

– Power-on/Power down reset (POR/PDR)

– Low power modes: Sleep, Stop, Standby

• Clock management

– 4 to 32 MHz crystal oscillator

– 32 kHz oscillator for RTC with calibration

– Internal 8 MHz RC with x6 PLL option

– Internal 40 kHz RC oscillator

• Up to 51 fast I/Os

– All mappable on external interrupt vectors

– Up to 5155 I/Os with 5V tolerant capability

• 5-channel DMA controller

• One 12-bit, 1.0 μs ADC (up to 16 channels)

– Conversion range: 0 to 3.6 V

– Separate analog supply: 2.4 V to 3.6 V

• Calendar RTC with alarm and periodic wakeup

from Stop/Standby

• 11 timers

– One 16-bit advanced-control timer for

six-channel PWM output

– Up to seven 16-bit timers, with up to four

IC/OC, OCN, usable for IR control

decoding

– Independent and system watchdog timers

– SysTick timer

• Communication interfaces

– Up to two I

C interfaces

– one supporting Fast Mode Plus

(1 Mbit/s) with 20 mA current sink,

– one supporting SMBus/PMBus.

– Up to four USARTs supporting master

synchronous SPI and modem control; one

with auto baud rate detection

– Up to two SPIs (18 Mbit/s) with 4 to 16

programmable bit frames

– USB 2.0 full-speed interface with BCD and

LPM support

• Serial wire debug (SWD)

• All packages ECOPACK

Table 1. Device summary

Reference Part number

STM32F070xB STM32F070CB, STM32F070RB

STM32F070x6 STM32F070C6, STM32F070F6

LQFP64 10x10 mm

LQFP48 7x7 mm

TSSOP20

www.st.com

Downloaded from Arrow.com.

Summary of content (88 pages)

PAGE 1
STM32F070xB STM32F070x6 ARM®-based 32-bit MCU, up to 128 KB Flash, USB FS 2.0, 11 timers, ADC, communication interfaces, 2.4 - 3.6 V Datasheet - production data Features • Core: ARM® 32-bit Cortex®-M0 CPU, frequency up to 48 MHz • Memories – 32 to 128 Kbytes of Flash memory – 6 to 16 Kbytes of SRAM with HW parity • CRC calculation unit • Reset and power management – Digital & I/Os supply: VDD = 2.4 V to 3.6 V – Analog supply: VDDA = VDD to 3.
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Contents STM32F070xB STM32F070x6 Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3 Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.1 ARM®-Cortex®-M0 core with embedded Flash and SRAM . . . . . . . . . . . 12 3.2 Memories . . . . . . . . . . . . . . . . . .
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STM32F070xB STM32F070x6 Contents 3.15 Serial peripheral interface (SPI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.16 Universal serial bus (USB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.17 Serial wire debug port (SW-DP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4 Pinouts and pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 5 Memory mapping . . . . . . . . . . . . . . . . . .
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Contents STM32F070xB STM32F070x6 6.3.19 7 Communication interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Package characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 7.1 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 7.2 Thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 7.2.1 Reference document . . . . . . . . . . . . . .
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STM32F070xB STM32F070x6 List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Table 16. Table 17. Table 18. Table 19. Table 20. Table 21. Table 22. Table 23. Table 24. Table 25. Table 26. Table 27. Table 28. Table 29. Table 30. Table 31. Table 32. Table 33. Table 34. Table 35. Table 36. Table 37. Table 38. Table 39. Table 40. Table 41. Table 42. Table 43. Table 44. Table 45. Table 46.
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List of tables Table 48. Table 49. Table 50. Table 51. Table 52. Table 53. Table 54. Table 55. Table 56. Table 57. Table 58. Table 59. Table 60. Table 61. Table 62. Table 63. Table 64. Table 65. 6/88 Downloaded from Arrow.com. STM32F070xB STM32F070x6 I/O AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 NRST pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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STM32F070xB STM32F070x6 List of figures List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Introduction 1 STM32F070xB STM32F070x6 Introduction This datasheet provides the ordering information and mechanical device characteristics of the STM32F070xB/6 microcontrollers. This document should be read in conjunction with the STM32F0x0xx reference manual (RM0360). The reference manual is available from the STMicroelectronics website www.st.com. For information on the ARM® Cortex®-M0 core, please refer to the Cortex®-M0 Technical Reference Manual, available from the www.arm.com website.
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STM32F070xB STM32F070x6 2 Description Description The STM32F070xB/6 microcontrollers incorporate the high-performance ARM® Cortex®M0 32-bit RISC core operating at a 48 MHz frequency, high-speed embedded memories (up to 128 Kbytes of Flash memory and up to 16 Kbytes of SRAM), and an extensive range of enhanced peripherals and I/Os.
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Description STM32F070xB STM32F070x6 Table 2. STM32F070xB/6 family device features and peripheral counts Peripheral STM32F070F6 STM32F070C6 32 128 SRAM (Kbytes) 6 16 Timers Comm. interfaces 1 (16-bit) General purpose 4 (16-bit) 5 (16-bit) Basic - 2 (16-bit) SPI 1 2 I C 1 2 USART 2 4 2 USB 12-bit ADC (number of channels) GPIOs 1 1 (9 ext. + 3 int.) 1 (10 ext. + 3 int.) 1 (10 ext. + 3 int.) 1 (16 ext. + 3 int.) 15 37 37 51 Max.
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STM32F070xB STM32F070x6 Description Figure 1. Block diagram 9'' 6HULDO :LUH 'HEXJ )ODVK 2EO LQWHUIDFH 6:&/. 6:',2 DV $) %XV PDWUL[ 65$0 FRQWUROOHU &257(; 0 &38 I0$; 0+] 19,& 32:(5 92/7 5(* 9 WR 9 )ODVK *3/ 8S WR .% ELWV 65$0 8S WR .% 9'',2 WR 9 966 # 9'',2 9''86%2.
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Functional overview STM32F070xB STM32F070x6 3 Functional overview 3.1 ARM®-Cortex®-M0 core with embedded Flash and SRAM The ARM® Cortex®-M0 processor is the latest generation of ARM processors for embedded systems. It has been developed to provide a low-cost platform that meets the needs of MCU implementation, with a reduced pin count and low-power consumption, while delivering outstanding computational performance and an advanced system response to interrupts.
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STM32F070xB STM32F070x6 3.4 Functional overview Cyclic redundancy check calculation unit (CRC) The CRC (cyclic redundancy check) calculation unit is used to get a CRC code using a configurable generator polynomial value and size. Among other applications, CRC-based techniques are used to verify data transmission or storage integrity. In the scope of the EN/IEC 60335-1 standard, they offer a means of verifying the Flash memory integrity.
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Functional overview 3.5.4 STM32F070xB STM32F070x6 Low-power modes The STM32F070xB/6 microcontrollers support three low-power modes to achieve the best compromise between low power consumption, short startup time and available wakeup sources: • Sleep mode In Sleep mode, only the CPU is stopped. All peripherals continue to operate and can wake up the CPU when an interrupt/event occurs. • Stop mode Stop mode achieves very low power consumption while retaining the content of SRAM and registers.
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STM32F070xB STM32F070x6 Functional overview Figure 2. Clock tree )/,7)&/. WR )ODVK SURJUDPPLQJ LQWHUIDFH +6, WR , & 6<6&/. 0+] +6, 5& +6, +&/. 6: 3//65& 35(',9 3//08/ 3// [ [ [ +6, 3//&/. +6( WR $+% EXV FRUH PHPRU\ DQG '0$ WR FRUWH[ 6\VWHP WLPHU )&/. &RUWH[ IUHH UXQQLQJ FORFN $+% $+% SUHVFDOHU 6<6&/. $3% SUHVFDOHU 3&/. WR $3% SHULSKHUDOV &66 26&B287 26&B,1 ,I $3% SUHVFDOHU [ HOVH [ 0+] +6( 26& 3&/. 6<6&/.
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Functional overview 3.8 STM32F070xB STM32F070x6 Direct memory access controller (DMA) The 5-channel general-purpose DMA manages memory-to-memory, peripheral-to-memory and memory-to-peripheral transfers. The DMA supports circular buffer management, removing the need for user code intervention when the controller reaches the end of the buffer. Each channel is connected to dedicated hardware DMA requests, with support for software trigger on each channel.
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STM32F070xB STM32F070x6 3.10 Functional overview Analog to digital converter (ADC) The 12-bit analog to digital converter has up to 16 external and two internal (temperature sensor, voltage reference measurement) channels and performs conversions in single-shot or scan modes. In scan mode, automatic conversion is performed on a selected group of analog inputs. The ADC can be served by the DMA controller.
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Functional overview 3.11 STM32F070xB STM32F070x6 Timers and watchdogs The STM32F070xB/6 devices include up to six general-purpose timers, two basic timers and one advanced control timer. Table 5 compares the features of the different timers. Table 5.
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STM32F070xB STM32F070x6 3.11.1 Functional overview Advanced-control timer (TIM1) The advanced-control timer (TIM1) can be seen as a three-phase PWM multiplexed on six channels. It has complementary PWM outputs with programmable inserted dead times. It can also be seen as a complete general-purpose timer.
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Functional overview STM32F070xB STM32F070x6 The TIM15, TIM16 and TIM17 timers can work together, and TIM15 can also operate withTIM1 via the Timer Link feature for synchronization or event chaining. TIM15 can be synchronized with TIM16 and TIM17. TIM15, TIM16 and TIM17 have a complementary output with dead-time generation and independent DMA request generation. Their counters can be frozen in debug mode. 3.11.3 Basic timers TIM6 and TIM7 These timers can be used as a generic 16-bit time base. 3.11.
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STM32F070xB STM32F070x6 3.12 Functional overview Real-time clock (RTC) The RTC is an independent BCD timer/counter. Its main features are the following: • Calendar with subseconds, seconds, minutes, hours (12 or 24 format), week day, date, month, year, in BCD (binary-coded decimal) format. • Automatic correction for 28, 29 (leap year), 30, and 31 day of the month. • Programmable alarm with wake up from Stop and Standby mode capability. • Periodic wakeup unit with programmable resolution and period.
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Functional overview STM32F070xB STM32F070x6 In addition, I2C1 provides hardware support for SMBUS 2.0 and PMBUS 1.1: ARP capability, Host notify protocol, hardware CRC (PEC) generation/verification, timeouts verifications and ALERT protocol management. The I2C interfaces can be served by the DMA controller. Refer to Table 7 for the differences between I2C1 and I2C2. Table 7.
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STM32F070xB STM32F070x6 3.15 Functional overview Serial peripheral interface (SPI) Up to two SPIs are able to communicate up to 18 Mbit/s in slave and master modes in fullduplex and half-duplex communication modes. The 3-bit prescaler gives 8 master mode frequencies and the frame size is configurable from 4 bits to 16 bits. SPI1 and SPI2 are identical and implement the set of features shown in the following table. Table 9.
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Pinouts and pin descriptions 4 STM32F070xB STM32F070x6 Pinouts and pin descriptions 3& 3& 26& B,1 3& 26& B287 3) 26&B,1 3) 26&B287 1567 3& 3& 3& 3& 966$ 9''$ 3$ 3$ 966 9'' 3$ 3$ /4)3 9'' 966 3$ 3$ 3$ 3$ 3$ 3$ 3& 3& 3& 3& 3% 3% 3% 3% 3$ 3$ 3$ 3$ 3& 3& 3% 3% 3%
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STM32F070xB STM32F070x6 Pinouts and pin descriptions 9'' 3& 3& 26& B,1 3& 26& B287 3) 26&B,1 3) 26&B287 1567 966$ 9''$ 3$ 3$ 3% 3$ 3$ 3% 3% 3% 3% %227 3% /4)3 9'' 966 3$ 3$ 3$ 3$ 3$ 3$ 3% 3% 3% 3% 9'' 3% 966 3% 3% 3% 3% 3$ 3$ 3$ 3$ 3$ 3$ 3% 9'' 966 Figure 4.
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Pinouts and pin descriptions STM32F070xB STM32F070x6 Table 10. Legend/abbreviations used in the pinout table Name Abbreviation Unless otherwise specified in brackets below the pin name, the pin function during and after reset is the same as the actual pin name Pin name Pin type I/O structure S Supply pin I Input only pin I/O Input / output pin FT 5 V tolerant I/O FTf 5 V tolerant I/O, FM+ capable TTa 3.3 V tolerant I/O directly connected to ADC TC Standard 3.
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STM32F070xB STM32F070x6 Pinouts and pin descriptions Table 11.
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Pinouts and pin descriptions STM32F070xB STM32F070x6 Table 11.
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STM32F070xB STM32F070x6 Pinouts and pin descriptions Table 11.
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Pinouts and pin descriptions STM32F070xB STM32F070x6 6. After reset, these pins are configured as SWDIO and SWCLK alternate functions, and the internal pull-up on the SWDIO pin and the internal pull-down on the SWCLK pin are activated. 30/88 Downloaded from Arrow.com.
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Downloaded from Arrow.com. EVENTOUT EVENTOUT SWDIO SWCLK SPI1_NSS PA11 PA12 PA13 DocID027114 Rev 2 PA14 PA15 2. Available on STM32F070x6 devices only. 1. Available on STM32F070xB devices only.
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/88 Downloaded from Arrow.com. DocID027114 Rev 2 TIM15_CH2 SPI2_MOSI(1) PB15 1. Available on STM32F070xB devices only.
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STM32F070xB STM32F070x6 Table 14.
PAGE 34
Memory mapping 5 STM32F070xB STM32F070x6 Memory mapping Figure 6. STM32F070xB/6 memory map [)))) )))) [ )) $+% [ [( [( &RUWH[ 0 ,QWHUQDO 3HULSKHUDOV UHVHUYHG [& [ )) $+% [ 5HVHUYHG [$ [ [ ))) )))) [ ))) ) $3% 2SWLRQ E\WHV [ [ 6\VWHP PHPRU\ 5HVHUYHG [ [ ))) & $3% [ [ 5HVHUYHG [ 3HULSKHUDOV [ )ODVK PH
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STM32F070xB STM32F070x6 Memory mapping Table 17.
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Memory mapping STM32F070xB STM32F070x6 Table 17.
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STM32F070xB STM32F070x6 Electrical characteristics 6 Electrical characteristics 6.1 Parameter conditions Unless otherwise specified, all voltages are referenced to VSS. 6.1.1 Minimum and maximum values Unless otherwise specified, the minimum and maximum values are guaranteed in the worst conditions of ambient temperature, supply voltage and frequencies by tests in production on 100% of the devices with an ambient temperature at TA = 25 °C and TA = TAmax (given by the selected temperature range).
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Electrical characteristics 6.1.6 STM32F070xB STM32F070x6 Power supply scheme Figure 9. Power supply scheme 287 *3 , 2V ,1 /HYHO VKLIWHU /6( 57& :DNHXS ORJLF 9'' [ 9'' [ Q) [ ) , 2 ORJLF .HUQHO ORJLF &38 GLJLWDO PHPRULHV 5HJXODWRU [ 966 9''$ 9''$ 95() Q) ) $'& '$& 95() $QDORJ 5&V 3// FRPSDUDWRUV 23$03 966$ 06 9 Caution: 38/88 Downloaded from Arrow.com. Each power supply pair (VDD/VSS, VDDA/VSSA etc.
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STM32F070xB STM32F070x6 6.1.7 Electrical characteristics Current consumption measurement Figure 10. Current consumption measurement scheme ,'' 9'' ,''$ 9''$ 06 9 6.2 Absolute maximum ratings Stresses above the absolute maximum ratings listed in Table 18: Voltage characteristics, Table 19: Current characteristics and Table 20: Thermal characteristics may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these conditions is not implied.
PAGE 40
Electrical characteristics STM32F070xB STM32F070x6 Table 19. Current characteristics Symbol Ratings Max.
PAGE 41
STM32F070xB STM32F070x6 Electrical characteristics 6.3 Operating conditions 6.3.1 General operating conditions Table 21. General operating conditions Symbol Parameter Conditions Min Max Unit fHCLK Internal AHB clock frequency - 0 48 fPCLK Internal APB clock frequency - 0 48 VDD Standard operating voltage - 2.4 3.6 V VDDA Analog operating voltage Must have a potential equal to or higher than VDD 2.4 3.6 V TC and RST I/O -0.3 VDDIOx+0.3 TTa I/O -0.3 VDDA+0.
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Electrical characteristics 6.3.3 STM32F070xB STM32F070x6 Embedded reset and power control block characteristics The parameters given in Table 23 are derived from tests performed under the ambient temperature and supply voltage conditions summarized in Table 21: General operating conditions. Table 23. Embedded reset and power control block characteristics Symbol VPOR/PDR(1) VPDRhyst tRSTTEMPO(4) Parameter Power on/power down reset threshold Conditions Min Typ Max Unit Falling edge(2) 1.80 1.
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STM32F070xB STM32F070x6 Electrical characteristics All Run-mode current consumption measurements given in this section are performed with a reduced code that gives a consumption equivalent to CoreMark code.
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Electrical characteristics STM32F070xB STM32F070x6 Table 26. Typical and maximum current consumption from the VDDA supply VDDA = 3.6 V Symbol Conditions(1) Parameter fHCLK Typ Max @ TA Unit 85 °C HSE bypass, PLL on IDDA Supply current in Run or Sleep mode, code executing from Flash or RAM 48 MHz 165 196 8 MHz 3.6 5.2 1 MHz 3.6 5.2 HSI clock, PLL on 48 MHz 245 279 HSI clock, PLL off 8 MHz 83.4 95.3 HSE bypass, PLL off μA 1.
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STM32F070xB STM32F070x6 Electrical characteristics Typical current consumption The MCU is placed under the following conditions: • VDD = VDDA = 3.
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Electrical characteristics STM32F070xB STM32F070x6 I/O system current consumption The current consumption of the I/O system has two components: static and dynamic. I/O static current consumption All the I/Os used as inputs with pull-up generate current consumption when the pin is externally held low. The value of this current consumption can be simply computed by using the pull-up/pull-down resistors values given in Table 46: I/O static characteristics.
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STM32F070xB STM32F070x6 Electrical characteristics Table 29. Switching output I/O current consumption Symbol Parameter Conditions(1) VDDIOx = 3.3 V CEXT = 0 pF C = CINT + CEXT+ CS ISW I/O current consumption VDDIOx = 3.3 V CEXT = 22 pF C = CINT + CEXT+ CS VDDIOx = 3.3 V CEXT = 47 pF C = CINT + CEXT+ CS C = Cint I/O toggling frequency (fSW) Typ 4 MHz 0.18 8 MHz 0.37 16 MHz 0.76 24 MHz 1.39 48 MHz 2.188 4 MHz 0.49 8 MHz 0.94 16 MHz 2.38 24 MHz 3.99 4 MHz 0.81 8 MHz 1.
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Electrical characteristics 6.3.6 STM32F070xB STM32F070x6 Wakeup time from low-power mode The wakeup times given in Table 30 are the latency between the event and the execution of the first user instruction. The device goes in low-power mode after the WFE (Wait For Event) instruction, in the case of a WFI (Wait For Interruption) instruction, 16 CPU cycles must be added to the following timings due to the interrupt latency in the Cortex M0 architecture.
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STM32F070xB STM32F070x6 6.3.7 Electrical characteristics External clock source characteristics High-speed external user clock generated from an external source In bypass mode the HSE oscillator is switched off and the input pin is a standard GPIO. The external clock signal has to respect the I/O characteristics in Section 6.3.14. However, the recommended clock input waveform is shown in Figure 11: High-speed external clock source AC timing diagram. Table 31.
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Electrical characteristics STM32F070xB STM32F070x6 Low-speed external user clock generated from an external source In bypass mode the LSE oscillator is switched off and the input pin is a standard GPIO. The external clock signal has to respect the I/O characteristics in Section 6.3.14. However, the recommended clock input waveform is shown in Figure 12. Table 32.
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STM32F070xB STM32F070x6 Electrical characteristics High-speed external clock generated from a crystal/ceramic resonator The high-speed external (HSE) clock can be supplied with a 4 to 32 MHz crystal/ceramic resonator oscillator. All the information given in this paragraph are based on design simulation results obtained with typical external components specified in Table 33.
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Electrical characteristics STM32F070xB STM32F070x6 Figure 13. Typical application with an 8 MHz crystal 5HVRQDWRU ZLWK LQWHJUDWHG FDSDFLWRUV &/ 26&B,1 0+] UHVRQDWRU &/ 5(;7 I+6( 5) %LDV FRQWUROOHG JDLQ 26&B287 06 9 1. REXT value depends on the crystal characteristics. 52/88 Downloaded from Arrow.com.
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STM32F070xB STM32F070x6 Electrical characteristics Low-speed external clock generated from a crystal resonator The low-speed external (LSE) clock can be supplied with a 32.768 kHz crystal resonator oscillator. All the information given in this paragraph are based on design simulation results obtained with typical external components specified in Table 34.
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Electrical characteristics STM32F070xB STM32F070x6 Figure 14. Typical application with a 32.768 kHz crystal 5HVRQDWRU ZLWK LQWHJUDWHG FDSDFLWRUV &/ 26&B,1 I+6( 'ULYH SURJUDPPDEOH DPSOLILHU N+] UHVRQDWRU 26&B287 &/ 06 9 Note: 54/88 Downloaded from Arrow.com. An external resistor is not required between OSC32_IN and OSC32_OUT and it is forbidden to add one.
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STM32F070xB STM32F070x6 6.3.8 Electrical characteristics Internal clock source characteristics The parameters given in Table 35 are derived from tests performed under ambient temperature and supply voltage conditions summarized in Table 21: General operating conditions. The provided curves are characterization results, not tested in production. High-speed internal (HSI) RC oscillator Table 35.
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Electrical characteristics STM32F070xB STM32F070x6 Low-speed internal (LSI) RC oscillator Table 37. LSI oscillator characteristics(1) Symbol fLSI tsu(LSI) Parameter Min Typ Max Unit 30 40 50 kHz LSI oscillator startup time - - 85 μs LSI oscillator power consumption - 0.75 - μA Frequency (2) IDDA(LSI)(2) 1. VDDA = 3.3 V, TA = -40 to 85 °C unless otherwise specified. 2. Guaranteed by design, not tested in production. 6.3.
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STM32F070xB STM32F070x6 6.3.10 Electrical characteristics Memory characteristics Flash memory The characteristics are given at TA = -40 to 85 °C unless otherwise specified. Table 39. Flash memory characteristics Min Typ Max(1) Unit 16-bit programming time TA = -40 to +85 °C - 53.5 - μs Page erase time (2) TA = -40 to +85 °C - 30 - ms tME Mass erase time TA = -40 to +85 °C - 30 - ms IDD Supply current Write mode - - 10 mA Erase mode - - 12 mA 2.4 - 3.
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Electrical characteristics STM32F070xB STM32F070x6 Table 41. EMS characteristics Symbol Parameter Level/ Class Conditions VFESD VDD = 3.3V, LQFP48, TA = +25 °C, Voltage limits to be applied on any I/O pin fHCLK = 48 MHz, to induce a functional disturbance conforming to IEC 61000-4-2 3B VEFTB Fast transient voltage burst limits to be applied through 100 pF on VDD and VSS pins to induce a functional disturbance VDD = 3.
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STM32F070xB STM32F070x6 6.3.12 Electrical characteristics Electrical sensitivity characteristics Based on three different tests (ESD, LU) using specific measurement methods, the device is stressed in order to determine its performance in terms of electrical sensitivity. Electrostatic discharge (ESD) Electrostatic discharges (a positive then a negative pulse separated by 1 second) are applied to the pins of each sample according to each pin combination.
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Electrical characteristics 6.3.13 STM32F070xB STM32F070x6 I/O current injection characteristics As a general rule, current injection to the I/O pins, due to external voltage below VSS or above VDDIOx (for standard, 3.3 V-capable I/O pins) should be avoided during normal product operation.
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STM32F070xB STM32F070x6 Electrical characteristics Table 46. I/O static characteristics Symbol VIL VIH Vhys Ilkg RPU Parameter Low level input voltage High level input voltage Schmitt trigger hysteresis Input leakage current(2) Weak pull-up equivalent resistor (4) RPD Weak pull-down equivalent resistor(4) CIO I/O pin capacitance Conditions Min Typ Max TC and TTa I/O - - 0.3 VDDIOx+0.07(1) FT and FTf I/O - - 0.475 VDDIOx–0.2(1) BOOT0 - - 0.3 VDDIOx–0.
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Electrical characteristics STM32F070xB STM32F070x6 All I/Os are CMOS- and TTL-compliant (no software configuration required). Their characteristics cover more than the strict CMOS-technology or TTL parameters. The coverage of these requirements is shown in Figure 15 for standard I/Os, and in Figure 16 for 5 V tolerant I/Os. The following curves are design simulation results, not tested in production. Figure 15. TC and TTa I/O input characteristics 3 VIN (V) 2.
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STM32F070xB STM32F070x6 Electrical characteristics Figure 16. Five volt tolerant (FT and FTf) I/O input characteristics 3 VIN (V) 2.5 TESTED RANGE TTL standard requirement 2 1.5 1 TTL standard requirement 0.5 TESTED RANGE 0 1.6 1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 VDDIOx (V) MS32131V3 DocID027114 Rev 2 63/88 75 Downloaded from Arrow.com.
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Electrical characteristics STM32F070xB STM32F070x6 Output driving current The GPIOs (general purpose input/outputs) can sink or source up to +/-8 mA, and sink or source up to +/- 20 mA (with a relaxed VOL/VOH). In the user application, the number of I/O pins which can drive current must be limited to respect the absolute maximum rating specified in Section 6.
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STM32F070xB STM32F070x6 Electrical characteristics Table 48. I/O AC characteristics(1)(2) OSPEEDRy [1:0] value(1) Symbol Parameter Conditions Min Max Unit - 2 MHz - 125 - 125 - 10 - 25 - 25 CL = 30 pF, VDDIOx ≥ 2.7 V - 50 CL = 50 pF, VDDIOx ≥ 2.7 V - 30 CL = 50 pF, 2.4 V ≤ VDDIOx < 2.7 V - 20 CL = 30 pF, VDDIOx ≥ 2.7 V - 5 CL = 50 pF, VDDIOx ≥ 2.7 V - 8 CL = 50 pF, 2.4 V ≤ VDDIOx < 2.7 V - 12 CL = 30 pF, VDDIOx ≥ 2.7 V - 5 CL = 50 pF, VDDIOx ≥ 2.
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Electrical characteristics STM32F070xB STM32F070x6 Figure 17. I/O AC characteristics definition W I ,2 RXW W U ,2 RXW 7 0D[LPXP IUHTXHQF\ LV DFKLHYHG LI W W U I 7 DQG LI WKH GXW\ F\FOH LV ZKHQ ORDGHG E\ & - VHH WKH WDEOH , 2 $& FKDUDFWHULVWLFV GHILQLWLRQ 06 9 6.3.15 NRST pin characteristics The NRST pin input driver uses the CMOS technology. It is connected to a permanent pullup resistor, RPU.
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STM32F070xB STM32F070x6 Electrical characteristics Figure 18. Recommended NRST pin protection 9'' ([WHUQDO UHVHW FLUFXLWU\ 538 1567 ,QWHUQDO UHVHW )LOWHU ) 06 9 1. The external capacitor protects the device against parasitic resets. 2. The user must ensure that the level on the NRST pin can go below the VIL(NRST) max level specified in Table 49: NRST pin characteristics. Otherwise the reset will not be taken into account by the device.
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Electrical characteristics 6.3.16 STM32F070xB STM32F070x6 12-bit ADC characteristics Unless otherwise specified, the parameters given in Table 50 are preliminary values derived from tests performed under ambient temperature, fPCLK frequency and VDDA supply voltage conditions summarized in Table 21: General operating conditions. Note: It is recommended to perform a calibration after each power-up. Table 50.
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STM32F070xB STM32F070x6 Electrical characteristics Table 50. ADC characteristics (continued) Symbol Parameter Conditions tSTAB(2) Power-up time tCONV(2) Total conversion time (including sampling time) Min Typ Max Unit 0 0 1 μs 1 - 18 μs fADC = 14 MHz 14 to 252 (tS for sampling +12.5 for successive approximation) 1/fADC 1. During conversion of the sampled value (12.5 x ADC clock period), an additional consumption of 100 μA on IDDA and 60 μA on IDD should be taken into account. 2.
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Electrical characteristics STM32F070xB STM32F070x6 3. Better performance may be achieved in restricted VDDA, frequency and temperature ranges. 4. Data based on characterization results, not tested in production. Figure 19.
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STM32F070xB STM32F070x6 Electrical characteristics General PCB design guidelines Power supply decoupling should be performed as shown in Figure 9: Power supply scheme. The 10 nF capacitor should be ceramic (good quality) and it should be placed as close as possible to the chip. 6.3.17 Temperature sensor characteristics Table 53. TS characteristics Symbol Parameter TL(1) Typ Max Unit - ±1 ±2 °C 4.0 4.3 4.6 mV/°C 1.34 1.43 1.
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Electrical characteristics STM32F070xB STM32F070x6 Table 55. IWDG min/max timeout period at 40 kHz (LSI)(1) Prescaler divider PR[2:0] bits Min timeout RL[11:0]= 0x000 Max timeout RL[11:0]= 0xFFF /4 0 0.1 409.6 /8 1 0.2 819.2 /16 2 0.4 1638.4 /32 3 0.8 3276.8 /64 4 1.6 6553.6 /128 5 3.2 13107.2 /256 6 or 7 6.4 26214.4 Unit ms 1. These timings are given for a 40 kHz clock but the microcontroller internal RC frequency can vary from 30 to 60 kHz.
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STM32F070xB STM32F070x6 Electrical characteristics Table 57. I2C analog filter characteristics(1) Symbol Parameter Min Max Unit tAF Maximum pulse width of spikes that are suppressed by the analog filter 50(2) 260(3) ns 1. Guaranteed by design, not tested in production. 2. Spikes with widths below tAF(min) are filtered. 3.
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Electrical characteristics STM32F070xB STM32F070x6 Figure 21. SPI timing diagram - slave mode and CPHA = 0 E^^ ŝŶƉƵƚ ƚĐ;^ <Ϳ ƚŚ;E^^Ϳ ^ < /ŶƉƵƚ ƚ^h;E^^Ϳ W, с Ϭ WK>сϬ ƚǁ;^ <,Ϳƚǁ;^ <>Ϳ W, с Ϭ WK>сϭ ƚǀ;^KͿ ƚĂ;^KͿ D/^K Khd W hd ƚƌ;^ <ͿƚĨ;^ <Ϳ ƚĚŝƐ;^KͿ ƚŚ;^KͿ D^ K hd / dϲ Khd D ^ /E / dϭ /E >^ Khd ƚƐƵ;^/Ϳ DK^/ / EWhd >^ /E ƚŚ;^/Ϳ DL F Figure 22.
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STM32F070xB STM32F070x6 Electrical characteristics Figure 23. SPI timing diagram - master mode (IGH .33 INPUT 3#+ /UTPUT #0(! #0/, 3#+ /UTPUT TC 3#+ #0(! #0/, #0(! #0/, #0(! #0/, TSU -) -)3/ ).0 54 TW 3#+( TW 3#+, TR 3#+ TF 3#+ -3 "). ") 4 ). ,3" ). TH -) -/3) /54054 - 3" /54 ,3" /54 " ) 4 /54 TV -/ TH -/ AI 6 1. Measurement points are done at CMOS levels: 0.3 VDD and 0.7 VDD.
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Package characteristics STM32F070xB STM32F070x6 7 Package characteristics 7.1 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. 76/88 Downloaded from Arrow.com.
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STM32F070xB STM32F070x6 Package characteristics Figure 24. LQFP64 - 10 x 10 mm 64 pin low-profile quad flat package outline PP *$8*( 3/$1( F $ $ $ 6($7,1* 3/$1( & $ FFF & ' ' ' . / / 3,1 ,'(17,),&$7,21 ( ( ( E H :B0(B9 1. Drawing is not to scale. Table 60. LQFP64 - 10 x 10 mm low-profile quad flat package mechanical data inches(1) millimeters Symbol Min Typ Max Min Typ Max A - - 1.600 - - 0.0630 A1 0.050 - 0.150 0.0020 - 0.
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Package characteristics STM32F070xB STM32F070x6 Table 60. LQFP64 - 10 x 10 mm low-profile quad flat package mechanical data (continued) inches(1) millimeters Symbol Min Typ Max Min Typ Max L 0.450 0.600 0.750 0.0177 0.0236 0.0295 L1 - 1.000 - - 0.0394 - ccc - - 0.080 - - 0.0031 K 0° 3.5° 7° 0° 3.5° 7° 1. Values in inches are converted from mm and rounded to 4 decimal digits. Figure 25.
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STM32F070xB STM32F070x6 Package characteristics Device marking for LQFP64 The following figure shows the device marking for the LQFP64 package. Figure 26. LQFP64 marking example (package top view) 5HYLVLRQ FRGH 3 3URGXFW LGHQWLILFDWLRQ 45. ' 3#5 'DWH FRGH : 88 3LQ LGHQWLILFDWLRQ 06 9 1.
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Package characteristics STM32F070xB STM32F070x6 Figure 27. LQFP48 - 7 mm x 7 mm, 48 pin low-profile quad flat package outline C ! ! ! 3%!4).' 0,!.% # MM '!5'% 0,!.% CCC # + ! $ $ , , $ % % % B 0). )$%.4)&)#!4)/. E "?-%?6 1. Drawing is not to scale. Table 61. LQFP48 - 7 mm x 7 mm low-profile quad flat package mechanical data inches(1) millimeters Symbol Min A 80/88 Downloaded from Arrow.com. Typ Max Min Typ Max - 1.600 - - 0.
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STM32F070xB STM32F070x6 Package characteristics Table 61. LQFP48 - 7 mm x 7 mm low-profile quad flat package mechanical data inches(1) millimeters Symbol Min Typ Max Min Typ Max e - 0.500 - - 0.0197 - L 0.450 0.600 0.750 0.0177 0.0236 0.0295 L1 - 1.000 - - 0.0394 - ccc - - 0.080 - - 0.0031 K 0° 3.5° 7° 0° 3.5° 7° 1. Values in inches are converted from mm and rounded to 4 decimal digits. Figure 28.
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Package characteristics STM32F070xB STM32F070x6 Device marking for LQFP48 The following figure shows the device marking for the LQFP48 package. Figure 29. LQFP48 marking example (package top view) 'HYLFH LGHQWLILFDWLRQ 45. ' $#5 'DWH FRGH : 88 3LQ LGHQWLILFDWLRQ 3 5HYLVLRQ FRGH 06 9 1.
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STM32F070xB STM32F070x6 Package characteristics Figure 30. TSSOP20 - 20-pin thin shrink small outline $ C % % 3%!4).' 0,!.% # MM '!5'% 0,!.% 0). )$%.4)&)#!4)/. K AAA # ! ! , ! B , E 9!?-%?6 1. Drawing is not to scale. Table 62. TSSOP20 - 20-pin thin shrink small outline package mechanical data inches(1) millimeters Symbol Min A Typ Max Min Typ - 1.2 - - 0.0472 A1 0.05 - 0.15 0.002 - 0.0059 A2 0.8 1 1.05 0.0315 0.0394 0.0413 b 0.19 0.3 0.
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Package characteristics STM32F070xB STM32F070x6 Figure 31. TSSOP20 recommended footprint 9!?&0?6 1. Dimensions are in millimeters. Device marking for TSSOP20 The following figure shows the device marking for the TSSOP20 package. Figure 32. TSSOP20 marking example (package top view) 'HYLFH LGHQWLILFDWLRQ ' ' 1 'DWH FRGH 3LQ LGHQWLILFDWLRQ 5HYLVLRQ FRGH : 88 3 06 9 1.
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STM32F070xB STM32F070x6 7.2 Package characteristics Thermal characteristics The maximum chip junction temperature (TJmax) must never exceed the values given in Table 21: General operating conditions.
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Part numbering 8 STM32F070xB STM32F070x6 Part numbering For a list of available options (memory, package, and so on) or for further information on any aspect of this device, please contact your nearest ST sales office. + Table 64.
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STM32F070xB STM32F070x6 9 Revision history Revision history Table 65. Document revision history Date Revision 27-Nov-2014 1 Initial release. 2 Updated the number of SPI in Features and Section 2: Description. Updated Section 3.15: Serial peripheral interface (SPI). Updated the footnote4. of Table 11: STM32F070xB/6 pin definitions, and added the reference to PB9 pin. Moved the AF3 data to AF4 for PA9 and PA10 pins in Table 12: Alternate functions selected through GPIOA_AFR registers for port A.
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STM32F070xB STM32F070x6 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement.