ATMEGA644PA – AU Microcontroller – (SMD Package) – TQFP – 44 Pin Microcontroller

The ATMEGA164A is a low power, CMOS 8-bit microcontrollers based on the AVR® enhanced RISC architecture. The ATMEGA164A is a 40/49-pins device ranging from 16 KB to 128 KB Flash, with 1 KB to 16 KB SRAM, 512 Bytes to 4 KB EEPROM. By executing instructions in a single clock cycle, the devices achieve CPU throughput approaching one million instructions per second (MIPS) per megahertz, allowing the system designer to optimize power consumption versus processing speed.

Features:-

• High-performance, Low-power Atmel AVR 8-bit Microcontroller

• Advanced RISC Architecture

– 131 powerful instructions – most single clock cycle execution

– 32 × 8 General Purpose Working Registers + Peripheral Control Registers

– Fully Static Operation

– Up to 16MIPS Throughput at 16MHz

– On-chip 2-cycle Multiplier

• High Endurance Non-volatile Memory segments

– 16/32/64/128KBytes of In-System Self-programmable Flash program memory

– 512/1K/2K/4KBytes EEPROM

– 1/2/4/16KBytes 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

• JTAG (IEEE std. 1149.1 Compliant) Interface

– Boundary-scan Capabilities According to the JTAG Standard

– Extensive On-chip Debug Support

– Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface

• Peripheral Features

– Two 8-bit Timer/Counters with separate prescaler and compare mode

– One 16-bit Timer/Counter with separate prescaler, compare mode, and capture mode

– Real Time Counter with Separate Oscillator

– Six PWM Channels

– 8-channel, 10-bit ADC

• Differential mode with selectable gain at 1×, 10× or 200×

– Two Programmable serial USART

– Master/Slave SPI Serial Interface

– Programmable Watchdog Timer with On-chip Oscillator

– On-chip Analog Comparator

– Byte Oriented 2-wire Serial Interface

• Special Microcontroller Features

– Power-on Reset and Programmable Brown-out Detection

– Internal Calibrated RC Oscillator

– External and Internal Interrupt Sources

– Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and  Extended Standby ‘

• I/O and Packages

̶  32 Programmable I/O Lines

̶  40-pin PDIP, 44-lead TQFP, 44-pad VQFN/QFN/MLF

̶  44-pad DRQFN

• Operating voltage

– 1.8 – 5.5V

• Speed Grades

– 0 – 4MHz @ 1.8 – 5.5V

– 0 – 10MHz @ 2.7 – 5.5V

• Power Consumption at 1MHz, 3V, 25°C

̶  Active: 0.4mA

̶  Power-down Mode: 0.1µA

– Power-save Mode: 0.6µA (Including 32kHz RTC)

specifications:-

Program Memory                                                           Type Flash
Program Memory Size (KB)                                             64
CPU Speed (MIPS/DMIPS)                                               20
SRAM (B)                                                                         4,096
Data EEPROM/HEF (bytes)                                              2048
Digital Communication Peripherals                                 2-UART, 3-SPI, 1-I2C
Capture/Compare/PWM Peripherals                              1 Input Capture, 1 CCP, 6PWM
Timers                                                                             2 x 8-bit, 4 x 16-bit
Number of Comparators                                                1
Temperature Range (°C)                                               -40 to 85
Operating Voltage Range (V)                                        1.8 to 5.5
Pin Count                                                                       44

* product image for illustration purposes only. actual product may vary.