| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ATSAM3S4BA-MU | ATMEL CORP | - | 32-Bit | 64MHz | I²C, MMC, SPI, SSC, UART/USART, USB | 47 | 256KB (256K x 8) | FLASH | - | 48K x 8 | 1.62 V ~ 1.95 V | A/D 10x10/12b, D/A 2x12b | Internal | -40°C ~ 85°C | 64-VQFN | |
| ATMEGA644P-20MU | 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 | |
| AT89C5131A-RDTUM | ATMEL CORP | 80C51 | 8-Bit | 48MHz | I²C, SPI, UART/USART, USB | 34 | 32KB (32K x 8) | FLASH | 4K x 8 | 1.25K x 8 | 2.7 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 64-LQFP | |
| AT90USB646-MU | ATMEL CORP | AVR | 8-Bit | 16MHz | EBI/EMI, I²C, SPI, UART/USART, USB, USB OTG | 48 | 64KB (64K x 8) | FLASH | 2K x 8 | 4K x 8 | 2.7 V ~ 5.5 V | A/D 8x10b | Internal | -40°C ~ 85°C | 64-VFQFN Exposed Pad | |
| AT89C51RC2-RLTUM | ATMEL CORP | 80C51 | 8-Bit | 60MHz | SPI, UART/USART | 32 | 32KB (32K x 8) | FLASH | - | 1.25K x 8 | 2.7 V ~ 5.5 V | - | External | -40°C ~ 85°C | 44-LQFP | |
| AT89C5131A-S3SUM | ATMEL CORP | 80C51 | 8-Bit | 48MHz | I²C, SPI, UART/USART, USB | 34 | 32KB (32K x 8) | FLASH | 4K x 8 | 1.25K x 8 | 2.7 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 52-LCC (J-Lead) | |
| AT89C51RD2-SLSUM | ATMEL CORP | 80C51 | 8-Bit | 60MHz | SPI, UART/USART | 34 | 64KB (64K x 8) | FLASH | - | 2K x 8 | 2.7 V ~ 5.5 V | - | External | -40°C ~ 85°C | 44-LCC (J-Lead) | |
| AT32UC3A0512-ALUR | ATMEL CORP | AVR | 32-Bit | 66MHz | EBI/EMI, Ethernet, I²C, SPI, SSC, UART/USART, USB | 109 | 512KB (512K x 8) | FLASH | - | 64K x 8 | 1.65 V ~ 3.6 V | A/D 8x10b | Internal | -40°C ~ 85°C | 144-LQFP | |
| AT89C51AC3-RDTUM | ATMEL CORP | 80C51 | 8-Bit | 60MHz | SPI, UART/USART | 36 | 64KB (64K x 8) | FLASH | 2K x 8 | 2.25K x 8 | 3 V ~ 5.5 V | A/D 8x10b | External | -40°C ~ 85°C | 64-LQFP | |
| AT32UC3B1256-AUT | ATMEL CORP | AVR | 32-Bit | 60MHz | I²C, IrDA, SPI, SSC, UART/USART, USB | 28 | 256KB (256K x 8) | FLASH | - | 32K x 8 | 1.65 V ~ 3.6 V | A/D 6x10b | Internal | -40°C ~ 85°C | 48-TQFP |
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