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ATMEL  ATMEGA644-20PU  8 Bit Microcontroller, Low Power High Performance, ATmega, 20 MHz, 64 KB, 4 KB, 40 Pins, DIP

Technical Data Sheet (704.99KB) EN See all Technical Docs

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ATMEL ATMEGA644-20PU
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Product Overview

The ATMEGA644-20PU is a 8-bit high-performance low-power AVR RISC-based Microcontroller combines 64kB ISP flash memory with read-while-write capabilities, 2kB EEPROM, 4kB SRAM, 32 general purpose I/O lines, 32 general purpose working registers, real time counter, three flexible timer/counters with compare modes and PWM, 2 USARTs, byte oriented 2-wire serial interface, 8-channel/10-bit A/D converter with optional differential input stage with programmable gain, programmable watchdog timer with internal oscillator, SPI serial port, JTAG (IEEE 1149.1 compliant) test interface for on-chip debugging and six software selectable power saving modes. The device operates between 2.7 to 5.5V. By executing powerful instructions in a single clock-cycle, the device achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and processing speed.
  • Advanced RISC architecture - Fully static operation
  • High endurance, non-volatile memory segments
  • JTAG (IEEE 1149.1 compliant) interface
  • Peripheral features - Real time counter with separate oscillator
  • Power-on reset (POR) 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

Product Information

Controller Family/Series:
ATmega
CPU Speed:
20MHz
Program Memory Size:
64KB
RAM Memory Size:
4KB
No. of Pins:
40Pins
MCU Case Style:
DIP
No. of I/O's:
32I/O's
Embedded Interface Type:
I2C, SPI, UART
Supply Voltage Min:
2.7V
Supply Voltage Max:
5.5V
Packaging:
Each
Product Range:
ATMega Microcontrollers
Automotive Qualification Standard:
-
MSL:
-
SVHC:
No SVHC (15-Jun-2015)

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Applications

  • Industrial;
  • Computers & Computer Peripherals

Legislation and Environmental

Moisture Sensitivity Level:
-
Country of Origin:
United States

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423190
Weight (kg):
.009798