Thông số kỹ thuật
| thuộc tính | Giá trị |
| Supplier | Silicon Labs |
| Package | Tube |
| Series | C8051F9xx |
| ProductStatus | Obsolete |
| CoreProcessor | CIP-51 8051 |
| CoreSize | 8-Bit |
| Speed | 25MHz |
| Connectivity | SMBus (2-Wire/I²C), SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| NumberofI/O | 16 |
| ProgramMemorySize | 2KB (2K x 8) |
| ProgramMemoryType | FLASH |
| RAMSize | 512 x 8 |
| Voltage-Supply(Vcc/Vdd) | 1.8V ~ 3.6V |
| OscillatorType | Internal |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 20-UFQFN Exposed Pad |
