| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C8051F981-GM | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SMBus (2-Wire/I²C), SPI, UART/USART | 16 | 8KB (8K x 8) | FLASH | - | 512 x 8 | 1.8 V ~ 3.6 V | - | Internal | -40°C ~ 85°C | 20-UFQFN Exposed Pad | |
| C8051F990-GM | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SMBus (2-Wire/I²C), SPI, UART/USART | 16 | 8KB (8K x 8) | FLASH | - | 512 x 8 | 1.8 V ~ 3.6 V | A/D 9x12b | Internal | -40°C ~ 85°C | 20-UFQFN Exposed Pad | |
| C8051F991-GM | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SMBus (2-Wire/I²C), SPI, UART/USART | 16 | 8KB (8K x 8) | FLASH | - | 512 x 8 | 1.8 V ~ 3.6 V | - | Internal | -40°C ~ 85°C | 20-UFQFN Exposed Pad | |
| C8051F980-GM | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SMBus (2-Wire/I²C), SPI, UART/USART | 16 | 8KB (8K x 8) | FLASH | - | 512 x 8 | 1.8 V ~ 3.6 V | A/D 9x12b | Internal | -40°C ~ 85°C | 20-UFQFN Exposed Pad | |
| C8051F981-GMR | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SMBus (2-Wire/I²C), SPI, UART/USART | 16 | 8KB (8K x 8) | FLASH | - | 512 x 8 | 1.8 V ~ 3.6 V | - | Internal | -40°C ~ 85°C | 20-UFQFN Exposed Pad | |
| C8051F980-GMR | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SMBus (2-Wire/I²C), SPI, UART/USART | 16 | 8KB (8K x 8) | FLASH | - | 512 x 8 | 1.8 V ~ 3.6 V | A/D 9x12b | Internal | -40°C ~ 85°C | 20-UFQFN Exposed Pad | |
| C8051F991-GMR | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SMBus (2-Wire/I²C), SPI, UART/USART | 16 | 8KB (8K x 8) | FLASH | - | 512 x 8 | 1.8 V ~ 3.6 V | - | Internal | -40°C ~ 85°C | 20-UFQFN Exposed Pad | |
| C8051F990-GMR | SILICON LABORATORIES INC | 8051 | 8-Bit | 25MHz | SMBus (2-Wire/I²C), SPI, UART/USART | 16 | 8KB (8K x 8) | FLASH | - | 512 x 8 | 1.8 V ~ 3.6 V | A/D 9x12b | Internal | -40°C ~ 85°C | 20-UFQFN Exposed Pad | |
| STM8S903F3U6TR | STMICROELECTRONICS | STM8 | 8-Bit | 16MHz | I²C, IrDA, LIN, SPI, UART/USART | 16 | 8KB (8K x 8) | FLASH | 640 x 8 | 1K x 8 | 2.95 V ~ 5.5 V | A/D 5x10b | Internal | -40°C ~ 125°C | 20-UFQFN Exposed Pad |
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