Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsInterface ICsInterface IC - I/O extensions POR I²C, SMBus 400 kHz WQFN 24

FEATURES

INT

RESET

P00

P01

P02

P03

P04

P05

P06

P07

GND

SDA

SCL

P17

P16

P15

P14

P13

P12

P11

P10

P17

P16

P15

P14

P13

24 22 21

20 19

SDA

RESET

SCL

7 9 10 11 128

P00

P01

P02

P03

P04

P05

P10

P11

P06

P07

P12

GND

INT

Exposed

Center

Pad

DESCRIPTION/ORDERING INFORMATION

TCA9539

www.ti.com

........................................................................................................................................... SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009

LOW VOLTAGE 16-BIT I

C AND SMBus LOW-POWER I/O EXPANDER

WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS

PW PACKAGE

• Low Standby-Current Consumption of

(TOP VIEW)

3 µ A Max

• I

C to Parallel Port Expander

• Open-Drain Active-Low Interrupt Output

• Active-Low Reset Input

• 5-V Tolerant I/O Ports

• Compatible With Most Microcontrollers

• 400-kHz Fast I

C Bus

• Polarity Inversion Register

• Address by Two Hardware Address Pins for

Use of up to Four Devices

• Latched Outputs With High-Current Drive

Capability for Directly Driving LEDs

• Latch-Up Performance Exceeds 100 mA Per

RTW PACKAGE

JESD 78, Class II

(TOP VIEW)

• ESD Protection Exceeds JESD 22

– 2000-V Human-Body Model (A114-A)

– 1000-V Charged-Device Model (C101)

– 200-V Machine Model (A115-A)

The exposed center pad, if used, must be

connected as a secondary ground or left

electrically open.

This 16-bit I/O expander for the two-line bidirectional bus (I

C) is designed for 1.65-V to 5.5-V V

operation. It

provides general-purpose remote I/O expansion for most microcontroller families via the I

C interface [serial clock

(SCL), serial data (SDA)].

The TCA9539 consists of two 8-bit Configuration (input or output selection), Input Port, Output Port, and Polarity

Inversion (active-high or active-low operation) registers. At power-on, the I/Os are configured as inputs. The

system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for

each input or output is kept in the corresponding Input or output register. The polarity of the Input Port register

can be inverted with the Polarity Inversion register. All registers can be read by the system master.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (34 pages)

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TCA9539 www.ti.com...........................................................................................................................................
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TCA9539 SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009........................................................................................................................................... www.ti.com The system master can reset the TCA9539 in the event of a time-out or other improper operation by asserting a low in the RESET input. The power-on reset puts the registers in their default state and initializes the I2C/SMBus state machine.
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TCA9539 www.ti.com........................................................................................................................................... SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009 TERMINAL FUNCTIONS NO. TSSOP (PW) QFN (RTW) BGA (ZQS) NAME DESCRIPTION 1 22 A3 INT Interrupt output. Connect to VCC through a pullup resistor. 2 23 B3 A1 Address input. Connect directly to VCC or ground. 3 24 A2 RESET 4 1 A1 P00 P-port input/output. Push-pull design structure.
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TCA9539 SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009........................................................................................................................................... www.ti.com LOGIC DIAGRAM (POSITIVE LOGIC) TCA9539 1 INT Interrupt Logic LP Filter 21 A0 2 A1 P07-P00 22 SCL 23 SDA Input Filter I2C Bus Control Shift Register 16 Bits I/O Port P17-P10 RESET VCC GND 4 Write Pulse 3 24 12 Power-On Reset A. Pin numbers shown are for PW package. B.
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TCA9539 www.ti.com...........................................................................................................................................
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TCA9539 SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009........................................................................................................................................... www.ti.com I2C Interface The bidirectional I2C bus consists of the serial clock (SCL) and serial data (SDA) lines. Both lines must be connected to a positive supply via a pullup resistor when connected to the output stages of a device. Data transfer may be initiated only when the bus is not busy.
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TCA9539 www.ti.com........................................................................................................................................... SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009 Data Output by Transmitter NACK Data Output by Receiver ACK SCL From Master 1 2 8 9 S Clock Pulse for Acknowledgment Start Condition Figure 3.
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TCA9539 SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009........................................................................................................................................... www.ti.com Device Address Figure 4 shows the address byte of the TCA9539. R/W Slave Address 1 1 1 0 Fixed A1 A0 1 Programmable Figure 4.
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TCA9539 www.ti.com........................................................................................................................................... SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009 Register Descriptions The Input Port registers (registers 0 and 1) reflect the incoming logic levels of the pins, regardless of whether the pin is defined as an input or an output by the Configuration register. It only acts on read operation. Writes to these registers have no effect.
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TCA9539 SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009........................................................................................................................................... www.ti.com RESET Input A reset can be accomplished by holding the RESET pin low for a minimum of tW. The TCA9539 registers and I2C/SMBus state machine are held in their default states until RESET is once again high. This input requires a pullup resistor to VCC, if no active connection is used.
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TCA9539 www.ti.com...........................................................................................................................................
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TCA9539 SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009........................................................................................................................................... www.ti.com 1 SCL 2 3 4 5 6 7 8 9 I0.x SDA S 1 1 1 0 1 A1 1 A0 A R/W 7 6 5 4 3 I1.x 2 1 0 A 7 6 5 4 3 Acknowledge From Master Acknowledge From Slave I0.x 2 1 0 A 7 6 5 4 3 I1.
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TCA9539 www.ti.com........................................................................................................................................... SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009 ABSOLUTE MAXIMUM RATINGS (1) over operating free-air temperature range (unless otherwise noted) MIN MAX VCC Supply voltage range –0.5 6 V VI Input voltage range (2) –0.
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TCA9539 SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009........................................................................................................................................... www.ti.com ELECTRICAL CHARACTERISTICS over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC MIN –1.2 VIK Input diode clamp voltage II = –18 mA 1.65 V to 5.5 V VPOR Power-on reset voltage VI = VCC or GND, IO = 0 1.65 V to 5.
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TCA9539 www.ti.com........................................................................................................................................... SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009 I2C INTERFACE TIMING REQUIREMENTS over recommended operating free-air temperature range (unless otherwise noted) (see Figure 11) fscl I2C clock frequency tsch I2C clock high time I C clock low time tsp I2C spike time tsds I2C serial-data setup time MAX UNIT 0 400 kHz µs 0.
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TCA9539 SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009........................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS TA = 25°C (unless otherwise noted) SUPPLY CURRENT vs TEMPERATURE STANDBY SUPPLY CURRENT vs TEMPERATURE 22 14 12 10 VCC = 3.3 V 8 VCC = 2.5 V 6 4 VCC = 1.8 V 2 VCC = 1.65 V -15 10 35 VCC = 5.5 V 1600 VCC = 5 V 1400 1200 600 VCC = 1.8 V 400 VCC = 1.
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TCA9539 www.ti.com........................................................................................................................................... SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009 TYPICAL CHARACTERISTICS (continued) TA = 25°C (unless otherwise noted) I/O LOW VOLTAGE vs TEMPERATURE I/O SOURCE CURRENT vs OUTPUT HIGH VOLTAGE 200 150 VCC = 5 V, ISINK = 10 mA 100 VCC = 1.8 V, ISINK = 1 mA VCC = 5 V, ISINK = 1 mA -15 10 35 60 15 TA = 25°C 10 TA = 85°C 5 0 85 0.1 0.
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TCA9539 SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009........................................................................................................................................... www.ti.
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TCA9539 www.ti.com........................................................................................................................................... SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009 PARAMETER MEASUREMENT INFORMATION (continued) VCC RL = 4.
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TCA9539 SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009........................................................................................................................................... www.ti.com PARAMETER MEASUREMENT INFORMATION (continued) Pn 500 W DUT CL = 50 pF (see Note A) 2 × VCC 500 W P-PORT LOAD CONFIGURATION 0.7 × VCC SCL P0 A P3 0.3 × VCC Slave ACK ÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎ SDA Pn tpv (see Note B) Unstable Data Last Stable Bit WRITE MODE (R/W = 0) 0.
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TCA9539 www.ti.com........................................................................................................................................... SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009 PARAMETER MEASUREMENT INFORMATION (continued) VCC Pn RL = 1 kΩ DUT 500 W 2 × VCC DUT SDA CL = 50 pF (see Note A) 500 W CL = 50 pF (see Note A) P-PORT LOAD CONFIGURATION SDA LOAD CONFIGURATION Start SCL ACK or Read Cycle SDA 0.3 y VCC tRESET RESET VCC/2 tREC tw Pn VCC/2 tRESET A.
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TCA9539 SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009........................................................................................................................................... www.ti.com APPLICATION INFORMATION Figure 15 shows an application in which the TCA9539 can be used. Subsystem 1 (e.g., Temperature Sensor) INT VCC (5 V) 10 kΩ VCC 10 kΩ 10 kΩ 24 Ω 10 kΩ 22 SCL Master Controller SDA 23 SCL SDA GND Subsystem 2 (e.g.
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TCA9539 www.ti.com........................................................................................................................................... SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009 Minimizing ICC When I/O Is Used to Control LED When an I/O is used to control an LED, normally it is connected to VCC through a resistor (see Figure 15). Because the LED acts as a diode, when the LED is off, the I/O VIN is about 1.2 V less than VCC.
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TCA9539 SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009........................................................................................................................................... www.ti.com VCC Ramp-Down Ramp-Up VCC_TRR_VPOR50 VIN drops below POR levels Time Time to Re-Ramp VCC_FT VCC_RT Figure 19. VCC is Lowered Below the POR Threshold, Then Ramped Back Up to VCC Table 1 specifies the performance of the power-on reset feature for TCA9539 for both types of power-on reset. Table 1.
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TCA9539 www.ti.com........................................................................................................................................... SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009 VCC VPOR VPORF Time POR Time Figure 21.
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PACKAGE OPTION ADDENDUM www.ti.
PAGE 27
PACKAGE MATERIALS INFORMATION www.ti.com 31-Aug-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TCA9539PWR TSSOP PW 24 2000 330.0 16.4 6.95 8.3 1.6 8.0 16.0 Q1 TCA9539RTWR WQFN RTW 24 3000 330.0 12.4 4.25 4.25 1.15 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 31-Aug-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TCA9539PWR TCA9539RTWR TSSOP PW 24 2000 367.0 367.0 38.0 WQFN RTW 24 3000 367.0 367.0 35.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.