PartNumber | ATMEGA644PA-AN | ATMEGA644PA-AU | ATMEGA644PA-ANR |
Description | 8-bit Microcontrollers - MCU 16 MHz, 105C, Green, TQFP | 8-bit Microcontrollers - MCU 64K Flash 2K EEPROM 4K SRAM 32 IO Pins | 8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB RAM-16MHz 105C |
Manufacturer | Microchip | Microchip | Microchip |
Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
RoHS | Y | Y | Y |
Mounting Style | SMD/SMT | SMD/SMT | - |
Package / Case | TQFP-44 | TQFP-44 | TQFP-44 |
Series | ATmega644 | ATmega644 | ATmega644 |
Core | AVR | AVR | AVR |
Data Bus Width | 8 bit | 8 bit | 8 bit |
Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz |
Program Memory Size | 64 kB | 64 kB | - |
Data RAM Size | 4 kB | 4 kB | - |
ADC Resolution | 10 bit | - | - |
Number of I/Os | 32 I/O | 32 I/O | - |
Operating Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
Minimum Operating Temperature | - 40 C | - 40 C | - |
Maximum Operating Temperature | + 105 C | + 85 C | - |
Packaging | Tray | Tray | Reel |
Product | MCU | MCU | MCU |
Program Memory Type | Flash | Flash | - |
Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
Data RAM Type | SRAM | SRAM | - |
Data ROM Size | 2 kB | - | - |
Data ROM Type | EEPROM | - | - |
Interface Type | I2C, SPI, USART | SPI, TWI, UART | - |
Moisture Sensitive | Yes | Yes | - |
Number of ADC Channels | 8 Channel | - | - |
Number of Timers/Counters | 2 x 8 bit, 1 x 16 bit | - | - |
Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
Factory Pack Quantity | 160 | 160 | 2000 |
Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
Supply Voltage Max | 5.5 V | - | - |
Supply Voltage Min | 1.8 V | - | - |
Tradename | AVR | AVR | AVR |
Watchdog Timers | Watchdog Timer | - | - |
Processor Series | - | megaAVR | megaAVR |
Unit Weight | - | 0.077603 oz | - |