| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AT91M42800A-33CJ | ATMEL CORP | ARM7 | 16/32-Bit | 33MHz | EBI/EMI, SPI, UART/USART | 54 | - | ROMless | - | 8K x 8 | 2.7 V ~ 3.6 V | - | External | -40°C ~ 85°C | 144-LFBGA | |
| AT91M40800-33AU-999 | ATMEL CORP | ARM7 | 16/32-Bit | 33MHz | EBI/EMI, UART/USART | 32 | - | ROMless | - | 8K x 8 | 1.8 V ~ 3.6 V | - | External | -40°C ~ 85°C | 100-LQFP | |
| AT91M42800A-33AU-999 | ATMEL CORP | ARM7 | 16/32-Bit | 33MHz | EBI/EMI, SPI, UART/USART | 54 | - | ROMless | - | 8K x 8 | 2.7 V ~ 3.6 V | - | External | -40°C ~ 85°C | 144-LQFP | |
| AT91R40008-66AU-999 | ATMEL CORP | ARM7 | 16/32-Bit | 66MHz | EBI/EMI, UART/USART | 32 | - | ROMless | - | 256K x 8 | 1.65 V ~ 1.95 V | - | External | -40°C ~ 85°C | 100-LQFP | |
| AT91M42800A-33CJ-999 | ATMEL CORP | ARM7 | 16/32-Bit | 33MHz | EBI/EMI, SPI, UART/USART | 54 | - | ROMless | - | 8K x 8 | 2.7 V ~ 3.6 V | - | External | -40°C ~ 85°C | 144-LFBGA | |
| AT91M55800A-33AU | ATMEL CORP | ARM7 | 16/32-Bit | 33MHz | EBI/EMI, SPI, UART/USART | 58 | - | ROMless | - | 8K x 8 | 2.7 V ~ 3.6 V | A/D 8x10b; D/A 2x10b | Internal | -40°C ~ 85°C | 176-LQFP | |
| AT91R40008-66AU | ATMEL CORP | ARM7 | 16/32-Bit | 66MHz | EBI/EMI, UART/USART | 32 | - | ROMless | - | 256K x 8 | 1.65 V ~ 1.95 V | - | External | -40°C ~ 85°C | 100-LQFP | |
| AT91M40800-33AU | ATMEL CORP | ARM7 | 16/32-Bit | 33MHz | EBI/EMI, UART/USART | 32 | - | ROMless | - | 8K x 8 | 1.8 V ~ 3.6 V | - | External | -40°C ~ 85°C | 100-LQFP | |
| AT91M55800A-33CJ-999 | ATMEL CORP | ARM7 | 16/32-Bit | 33MHz | EBI/EMI, SPI, UART/USART | 58 | - | ROMless | - | 8K x 8 | 2.7 V ~ 3.6 V | A/D 8x10b; D/A 2x10b | Internal | -40°C ~ 85°C | 176-LFBGA | |
| AT91M55800A-33CJ | ATMEL CORP | ARM7 | 16/32-Bit | 33MHz | EBI/EMI, SPI, UART/USART | 58 | - | ROMless | - | 8K x 8 | 2.7 V ~ 3.6 V | A/D 8x10b; D/A 2x10b | Internal | -40°C ~ 85°C | 176-LFBGA |
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