| Series | C8051F9xx |
| Package | Tube |
| Part Status | Active |
| Core Processor | 8051 |
| Core Size | 8-Bit |
| Speed | 25MHz |
| Connectivity | SMBus (2-Wire/I²C), SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT |
| Number of I/O | 24 |
| Program Memory Size | 64KB (64K x 8) |
| Program Memory Type | FLASH |
| EEPROM Size | - |
| RAM Size | 4.25K x 8 |
| Voltage - Supply (Vcc/Vdd) | 0.9V ~ 3.6V |
| Data Converters | A/D 23x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 32-VFQFN Exposed Pad |
| Supplier Device Package | 32-QFN (5x5) |
