| PartNumber | C8051F331-GMR | C8051F331 | C8051F331-GM |
| Description | 8-bit Microcontrollers - MCU 8kB/768B RAM, QFN20 OTP available (T631-GM) | IC MCU 8BIT 8KB FLASH 20MLP | |
| Manufacturer | Silicon Laboratories | - | - |
| Product Category | 8-bit Microcontrollers - MCU | - | - |
| RoHS | Y | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | QFN-20 | - | - |
| Series | C8051F331 | - | - |
| Core | 8051 | - | - |
| Data Bus Width | 8 bit | - | - |
| Maximum Clock Frequency | 25 MHz | - | - |
| Program Memory Size | 8 kB | - | - |
| Data RAM Size | 768 B | - | - |
| ADC Resolution | No ADC | - | - |
| Number of I/Os | 17 I/O | - | - |
| Operating Supply Voltage | 2.7 V to 3.6 V | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Packaging | Reel | - | - |
| Height | 0.88 mm | - | - |
| Length | 4 mm | - | - |
| Product | MCU | - | - |
| Program Memory Type | Flash | - | - |
| Width | 4 mm | - | - |
| Brand | Silicon Labs | - | - |
| Data ROM Size | 128 B | - | - |
| Data ROM Type | Flash | - | - |
| Interface Type | I2C, SPI, UART | - | - |
| Number of Timers/Counters | 4 Timer | - | - |
| Processor Series | C8051 | - | - |
| Product Type | 8-bit Microcontrollers - MCU | - | - |
| Factory Pack Quantity | 1500 | - | - |
| Subcategory | Microcontrollers - MCU | - | - |
| Supply Voltage Max | 3.6 V | - | - |
| Supply Voltage Min | 2.7 V | - | - |
| Unit Weight | 0.001498 oz | - | - |