| PartNumber | C8051T630-GM | C8051T631-GM | C8051T630-GMR |
| Description | 8-bit Microcontrollers - MCU MCU 8051 25 MHz 8 kB OTP LFO 8-bit MCU | 8-bit Microcontrollers - MCU MCU 8051 25 MHz 8 kB OTP LFO 8-bit MCU | 8-bit Microcontrollers - MCU 8kB OTP/768B RAM, 10b ADC, 10b DAC, QFN20 OTP version of F330-GM |
| Manufacturer | Silicon Laboratories | Silicon Laboratories | Silicon Laboratories |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | QFN-20 | QFN-20 | QFN-20 |
| Series | C8051T630 | C8051T631 | C8051T630 |
| Core | 8051 | 8051 | 8051 |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Maximum Clock Frequency | 25 MHz | 25 MHz | 25 MHz |
| Program Memory Size | 8 kB | 8 kB | 8 kB |
| Data RAM Size | 768 B | 768 B | 768 B |
| ADC Resolution | 10 bit | No ADC | 10 bit |
| Number of I/Os | 17 I/O | 17 I/O | 17 I/O |
| Operating Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Packaging | Tube | Tube | Reel |
| Height | 0.88 mm | 0.88 mm | 0.88 mm |
| Length | 4 mm | 4 mm | 4 mm |
| Program Memory Type | OTP EPROM | EPROM | EPROM |
| Width | 4 mm | 4 mm | 4 mm |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs |
| Interface Type | SMBus, SPI, UART | SMBus, SPI, UART | I2C, SPI, UART |
| Number of ADC Channels | 16 | - | 16 |
| Number of Timers/Counters | 4 Timer | 4 Timer | 4 Timer |
| Processor Series | C8051 | C8051 | C8051 |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 91 | 91 | 1500 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 3.6 V | 3.6 V | 3.6 V |
| Supply Voltage Min | 1.8 V | 1.8 V | 1.8 V |
| Unit Weight | 0.001498 oz | 0.001498 oz | 0.001498 oz |
| Data RAM Type | - | RAM | - |
| Moisture Sensitive | - | - | Yes |