| PartNumber | C8051T603-GM | C8051T603-GS | C8051T603-GMR |
| Description | 8-bit Microcontrollers - MCU OPT EPROM 8051 25 MHz 4 kB 8-bit MCU | 8-bit Microcontrollers - MCU OPT EPROM 8051 25 MHz 4 kB 8-bit MCU | 8-bit Microcontrollers - MCU 4kB OTP/256B RAM, QFN11 OTP version of F304-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-11 | SOIC-14 | QFN-11 |
| Series | C8051T603 | C8051T603 | C8051T603 |
| 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 | 4 kB | 4 kB | 4 kB |
| Data RAM Size | 256 B | 256 B | 256 B |
| ADC Resolution | No ADC | No ADC | No ADC |
| Number of I/Os | 8 I/O | 8 I/O | 8 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 | 1.5 mm | 0.88 mm |
| Length | 3 mm | 8.65 mm | 3 mm |
| Product | MCU | MCU | MCU |
| Program Memory Type | EPROM | EPROM | EPROM |
| Width | 3 mm | 3.9 mm | 3 mm |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs |
| Interface Type | I2C, SMBus, UART | I2C, SMBus, UART | I2C, SMBus, UART |
| Number of Timers/Counters | 3 Timer | 3 Timer | 3 Timer |
| Processor Series | C8051 | C8051 | C8051 |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 122 | 56 | 1500 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 1.9 V, 3.6 V | 1.9 V, 3.6 V | 1.9 V, 3.6 V |
| Supply Voltage Min | 1.7 V, 1.8 V | 1.7 V, 1.8 V | 1.7 V, 1.8 V |
| Unit Weight | 0.000850 oz | 0.004600 oz | 0.000850 oz |
| Moisture Sensitive | - | Yes | Yes |