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8-bit AVR Microcontroller

ATmega1284P

DATASHEET SUMMARY

Introduction

The Atmel

picoPower

ATmega1284P is a low-power CMOS 8-bit

microcontroller based on the AVR

enhanced RISC architecture. By

executing powerful instructions in a single clock cycle, the ATmega1284P

achieves throughputs close to 1MIPS per MHz. This empowers system

designer to optimize the device for power consumption versus processing

speed.

Feature

High Performance, Low Power Atmel

AVR

8-Bit Microcontroller Family

• Advanced RISC Architecture

– 131 Powerful Instructions

– Most Single Clock Cycle Execution

– 32 x 8 General Purpose Working Registers

– Fully Static Operation

– Up to 20 MIPS Throughput at 20MHz

– On-chip 2-cycle Multiplier

• High Endurance Non-volatile Memory Segments

– 128KBytes of In-System Self-Programmable Flash Program

Memory

– 4KBytes EEPROM

– 16KBytes Internal SRAM

– Write/Erase Cycles: 10,000 Flash/100,000 EEPROM

– Data Retention: 20 Years at 85°C/100 Years at 25°C

(1)

– Optional Boot Code Section with Independent Lock Bits

• In-System Programming by On-chip Boot Program

• True Read-While-Write Operation

– Programming Lock for Software Security

• Atmel QTouch

Library Support

– Capacitive Touch Buttons, Sliders and Wheels

– QTouch and QMatrix acquisition

– Up to 64 Sense Channels

Atmel-42719C-ATmega1284P_Datasheet_Summary-10/2016

Summary of content (17 pages)

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8-bit AVR Microcontroller ATmega1284P DATASHEET SUMMARY Introduction ® ® The Atmel picoPower ATmega1284P is a low-power CMOS 8-bit microcontroller based on the AVR® enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega1284P achieves throughputs close to 1MIPS per MHz. This empowers system designer to optimize the device for power consumption versus processing speed.
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• • JTAG (IEEE std. 1149.
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Table of Contents Introduction......................................................................................................................1 Feature............................................................................................................................ 1 1. Description.................................................................................................................4 2. Configuration Summary...........................................................................
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1. Description The Atmel® ATmega1284P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega1284P achieves throughputs close to 1MIPS per MHz. This empowers system designer to optimize the device for power consumption versus processing speed. The Atmel AVR® core combines a rich instruction set with 32 general purpose working registers.
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2. Configuration Summary The table below compares the device series of feature and pin compatible devices, providing a seamless migration path. Table 2-1.
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3. Ordering Information Speed [MHz](3) Power Supply [V] Ordering Code(2) Package(1) Operational Range 20 1.8 - 5.5 ATmega1284P-AU 44A Industrial (-40°C to 85°C) ATmega1284P-AUR(4) 44A ATmega1284P-PU 40P6 ATmega1284P-MU 44M1 ATmega1284P-MUR(4) 44M1 Note: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2.
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4. Block Diagram Figure 4-1. Block Diagram SRAM TCK TMS TDI TDO JTAG CPU OCD Clock generation TOSC1 32.
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5. Pin Configurations 5.1. Pinout 5.1.1.
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PB2 (AIN0/INT2/PCINT10) PB1 (T1/CLKO/PCINT9) PB0 (XCK0/T0/PCINT8) GND VCC PA0 (ADC0/PCINT0) PA1 (ADC1/PCINT1) PA2 (ADC2/PCINT2) PA3 (ADC3/PCINT3) 40 39 38 37 36 35 34 Crystal/Osc 41 Analog 42 Digital PB3 (AIN1/OC0A/PCINT11) Programming/debug 43 Ground PB4 (SS/OC0B/PCINT12) Power 44 TQFN and QFN 7 27 AVCC XTAL1 8 26 PC7 (TOSC2/PCINT23) (PCINT24/RXD0/T3) PD0 9 25 PC6 (TOSC1/PCINT22) (PCINT25/TXD0) PD1 10 24 PC5 (TDI/PCINT21) (PCINT26/RXD1/INT0) PD2 11 23 PC4 (TDO
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This is an 8-bit, bi-directional I/O port with internal pull-up resistors, individually selectable for each bit. The output buffers have symmetrical drive characteristics, with both high sink and source capability. As inputs, the port pins that are externally pulled low will source current if pull-up resistors are activated. Port pins are tri-stated when a reset condition becomes active, even if the clock is not running. 5.2.4.
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6. I/O Multiplexing Each pin is by default controlled by the PORT as a general purpose I/O and alternatively it can be assigned to one of the peripheral functions. The following table describes the peripheral signals multiplexed to the PORT I/O pins. Table 6-1.
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32-pin TQFP/ QFN/ MLF Pin # 40-pin PDIP Pin # PAD 35 38 36 EXTINT PCINT ADC/AC PA[2] PCINT2 ADC2 39 PA[1] PCINT1 ADC1 37 40 PA[0] PCINT0 ADC0 38 - VCC SDA1 39 - GND SCL1 40 1 PB[0] PCINT8 41 2 PB[1] PCINT9 42 3 PB[2] 43 4 44 INT2 OSC T/C # 0 T/C # 1 T0 CLKO PCINT10 AIN0 PB[3] PCINT11 AIN1 5 PB[4] PCINT12 - - GND - - GND - - GND - - GND - - GND USART I2C SPI JTAG XCK0 T1 OC0A OC0B SS Atmel ATmega1284P [DATASHEET] Atmel-42719C-ATmeg
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7. General Information 7.1. Resources A comprehensive set of development tools, application notes, and datasheets are available for download on http://www.atmel.com/avr. 7.2. Data Retention Reliability Qualification results show that the projected data retention failure rate is much less than 1 PPM over 20 years at 85°C. 7.3. About Code Examples This documentation contains simple code examples that briefly show how to use various parts of the device.
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8. Packaging Information 8.1. 40-pin PDIP D PIN 1 E1 A SEATING PLANE A1 L B B1 e E 0º ~ 15º C COMMON DIMENSIONS (Unit of Measure = mm) REF eB Notes: 1. This package conforms to JEDEC reference MS-011, Variation AC. 2. Dimensions D and E1 do not include mold Flash or Protrusion. Mold Flash or Protrusion shall not exceed 0.25mm (0.010"). SYMBOL MIN NOM MAX A – – 4.826 A1 0.381 – – D 52.070 – 52.578 E 15.240 – 15.875 E1 13.462 – 13.970 B 0.356 – 0.559 B1 1.
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8.2. 44-pin TQFP P IN 1 IDENTIFIER P IN 1 B e E1 E A1 A2 D1 D C 0°~7° L A COMMON DIMENS IONS (Unit of Me a s ure = mm) Note s : 1. This pa cka ge conforms to J EDEC re fe re nce MS -026, Va ria tion ACB. 2. Dime ns ions D1 a nd E1 do not include mold protrus ion. Allowa ble protrus ion is 0.25mm pe r s ide . Dime ns ions D1 a nd E1 a re ma ximum pla s tic body s ize dime ns ions including mold mis ma tch. 3. Le a d copla na rity is 0.10mm ma ximum. S YMBOL MIN NOM MAX A – – 1.
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8.3. 44-pin VQFN D Marked Pin# 1 I D E SE ATING PLANE A1 TOP VIEW A3 A K L Pin #1 Co rne r D2 1 2 3 Option A SIDE VIEW Pin #1 Triangl e COMMON DIMENSIONS (Unit of Measure = mm) MIN NOM MAX A 0.80 0.90 1.00 A1 – 0.02 0.05 SYMBOL E2 Option B K Option C b e Pin #1 Cham fe r (C 0.30) Pin #1 Notch (0.20 R) BOTTOM VIEW A3 0.20 REF b 0.18 0.23 D 6.90 7.00 7.10 D2 5.00 5.20 5.40 E 6.90 7.00 7.10 E2 5.00 5.20 5.40 e Note : JEDEC Standard MO-220, Fig .
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