| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AT80C51RA2-3CSUL | ATMEL CORP | 80C51 | 8-Bit | 30/20MHz | UART/USART | 32 | - | ROMless | - | 512 x 8 | 2.7 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 40-DIP (0.600, 15.24mm) | |
| AT80C51RA2-3CSUM | ATMEL CORP | 80C51 | 8-Bit | 40/20MHz | UART/USART | 32 | - | ROMless | - | 512 x 8 | 4.5 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 40-DIP (0.600, 15.24mm) | |
| AT80C51RA2-RLTUL | ATMEL CORP | 80C51 | 8-Bit | 30/20MHz | UART/USART | 32 | - | ROMless | - | 512 x 8 | 2.7 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LQFP | |
| AT80C51RA2-RLTUM | ATMEL CORP | 80C51 | 8-Bit | 40/20MHz | UART/USART | 32 | - | ROMless | - | 512 x 8 | 4.5 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LQFP | |
| AT80C51RA2-SLSUL | ATMEL CORP | 80C51 | 8-Bit | 30/20MHz | UART/USART | 32 | - | ROMless | - | 512 x 8 | 2.7 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LCC (J-Lead) | |
| AT80C51RA2-SLSUM | ATMEL CORP | 80C51 | 8-Bit | 40/20MHz | UART/USART | 32 | - | ROMless | - | 512 x 8 | 4.5 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LCC (J-Lead) | |
| AT80C51RA2-RLRUL | ATMEL CORP | 80C51 | 8-Bit | 30/20MHz | UART/USART | 32 | - | ROMless | - | 512 x 8 | 2.7 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LQFP | |
| AT80C51RA2-SLRUL | ATMEL CORP | 80C51 | 8-Bit | 30/20MHz | UART/USART | 32 | - | ROMless | - | 512 x 8 | 2.7 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LCC (J-Lead) | |
| AT80C51RA2-SLRUM | ATMEL CORP | 80C51 | 8-Bit | 40/20MHz | UART/USART | 32 | - | ROMless | - | 512 x 8 | 4.5 V ~ 5.5 V | - | Internal | -40°C ~ 85°C | 44-LCC (J-Lead) | |
| MCF5206AB25A | FREESCALE SEMICONDUCTOR INC | Coldfire V2 | 32-Bit | 25MHz | I²C, UART/USART | 8 | - | ROMless | - | 512 x 8 | 4.75 V ~ 5.25 V | - | External | 0°C ~ 70°C | 160-BQFP |
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