| Part Numbers | Manufacturer Name | Datasheet | Core Processor | Core Size | Speed | Connectivity | RAM Size | Number of I/O | Program Memory Size | Program Memory Type | EEPROM Size | Voltage - Supply (Vcc/Vdd) | Data Converters | Oscillator Type | Operating Temperature | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AT89S8253-24JU | ATMEL CORP | 8051 | 8-Bit | 24MHz | SPI, UART/USART | 32 | 12KB (12K x 8) | FLASH | 2K x 8 | 256 x 8 | 2.7 V ~ 5.5 V | - | External | -40°C ~ 85°C | 44-LCC (J-Lead) | |
| AT89S8253-24PU | ATMEL CORP | 8051 | 8-Bit | 24MHz | SPI, UART/USART | 32 | 12KB (12K x 8) | FLASH | 2K x 8 | 256 x 8 | 2.7 V ~ 5.5 V | - | External | -40°C ~ 85°C | 40-DIP (0.600, 15.24mm) | |
| ATMEGA64C1-15AZ | ATMEL CORP | AVR | 8-Bit | 16MHz | CAN, LIN, SPI, UART/USART | - | 64KB (32K x 16) | FLASH | 2K x 8 | 4K x 8 | 2.7 V ~ 5.5 V | A/D 11x10b; D/A 1x10b | Internal | -40°C ~ 125°C | 32-TQFP | |
| ATMEGA644PA-AUR | ATMEL CORP | AVR | 8-Bit | 20MHz | I²C, SPI, UART/USART | 32 | 64KB (32K x 16) | FLASH | 2K x 8 | 4K x 8 | 1.8 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 85°C | 44-TQFP | |
| ATMEGA644-20MUR | ATMEL CORP | AVR | 8-Bit | 20MHz | I²C, SPI, UART/USART | 32 | 64KB (32K x 16) | FLASH | 2K x 8 | 4K x 8 | 2.7 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 85°C | 44-VFQFN Exposed Pad | |
| ATMEGA64A-MN | ATMEL CORP | AVR | 8-Bit | 16MHz | I²C, SPI, UART/USART | 53 | 64KB (32K x 16) | FLASH | 2K x 8 | 4K x 8 | 2.7 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 105°C | 64-VFQFN Exposed Pad | |
| ATMEGA64A-AN | ATMEL CORP | AVR | 8-Bit | 16MHz | I²C, SPI, UART/USART | 53 | 64KB (32K x 16) | FLASH | 2K x 8 | 4K x 8 | 2.7 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 105°C | 64-TQFP | |
| ATMEGA644PA-MN | ATMEL CORP | AVR | 8-Bit | 20MHz | I²C, SPI, UART/USART | 32 | 64KB (32K x 16) | FLASH | 2K x 8 | 4K x 8 | 1.8 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 105°C | 44-VFQFN Exposed Pad | |
| ATMEGA64M1-MU | ATMEL CORP | AVR | 8-Bit | 16MHz | CAN, LIN, SPI, UART/USART | - | 64KB (32K x 16) | FLASH | 2K x 8 | 4K x 8 | 2.7 V ~ 5.5 V | A/D 11x10b; D/A 1x10b | Internal | -40°C ~ 85°C | 32-VFQFN Exposed Pad | |
| ATMEGA649A-MU | ATMEL CORP | AVR | 8-Bit | 16MHz | SPI, UART/USART, USI | 54 | 64KB (32K x 16) | FLASH | 2K x 8 | 4K x 8 | 1.8 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 85°C | 64-TQFP |
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