| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C8051F231-GQR | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SPI, UART/USART | 22 | 8KB (8K x 8) | FLASH | - | 256 x 8 | 2.7 V ~ 3.6 V | - | Internal | -40°C ~ 85°C | 32-LQFP | |
| C8051F221-GQ | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SPI, UART/USART | 22 | 8KB (8K x 8) | FLASH | - | 256 x 8 | 2.7 V ~ 3.6 V | A/D 22x8b | Internal | -40°C ~ 85°C | 32-LQFP | |
| C8051F231-GQ | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SPI, UART/USART | 22 | 8KB (8K x 8) | FLASH | - | 256 x 8 | 2.7 V ~ 3.6 V | - | Internal | -40°C ~ 85°C | 32-LQFP | |
| ST72F264G2B6 | STMICROELECTRONICS | ST7 | 8-Bit | 16MHz | I²C, SCI, SPI | 22 | 8KB (8K x 8) | FLASH | - | 256 x 8 | 2.7 V ~ 5.5 V | A/D 6x10b | Internal | -40°C ~ 85°C | 32-SDIP (0.400, 10.16mm) | |
| C8051F221-GQR | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SPI, UART/USART | 22 | 8KB (8K x 8) | FLASH | - | 256 x 8 | 2.7 V ~ 3.6 V | A/D 22x8b | Internal | -40°C ~ 85°C | 32-LQFP | |
| C8051F221R | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SPI, UART/USART | 22 | 8KB (8K x 8) | FLASH | - | 256 x 8 | 2.7 V ~ 3.6 V | A/D 22x8b | Internal | -40°C ~ 85°C | 32-LQFP | |
| C8051F231R | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SPI, UART/USART | 22 | 8KB (8K x 8) | FLASH | - | 256 x 8 | 2.7 V ~ 3.6 V | - | Internal | -40°C ~ 85°C | 32-LQFP | |
| C8051F221 | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SPI, UART/USART | 22 | 8KB (8K x 8) | FLASH | - | 256 x 8 | 2.7 V ~ 3.6 V | A/D 22x8b | Internal | -40°C ~ 85°C | 32-LQFP | |
| C8051F231 | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SPI, UART/USART | 22 | 8KB (8K x 8) | FLASH | - | 256 x 8 | 2.7 V ~ 3.6 V | - | Internal | -40°C ~ 85°C | 32-LQFP | |
| ST72C254G2M3/TR | STMICROELECTRONICS | ST7 | 8-Bit | 16MHz | I²C, SPI | 22 | 8KB (8K x 8) | FLASH | - | 256 x 8 | 3.2 V ~ 5.5 V | A/D 6x8b | Internal | -40°C ~ 125°C | 28-SOIC (0.295, 7.50mm Width) |
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