8-Bit Microcontroller (MCU) featuring an 8051 CPU core operating up to 25MHz. This CMOS device offers 16KB of FLASH memory and 1.25KB of RAM, with 21 programmable I/Os. Integrated peripherals include I2C, SPI, USB, UART, USART, SMBus, and 2-Wire interfaces, alongside 4 timers/counters, PWM, WDT, and Brown-out Detect/Reset. Designed for surface mounting in a QFN package, it operates from 2.7V to 5.25V and across a temperature range of -40°C to 85°C.
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Silicon Labs C8051F321 technical specifications.
| Access Time | 25us |
| Package/Case | QFN |
| Core Architecture | 8051 |
| Data Bus Width | 8b |
| Interface | I2C, SPI, USB, UART, USART, SMBus, 2-Wire |
| Lead Free | Contains Lead |
| Max Frequency | 25MHz |
| Max Operating Temperature | 85°C |
| Max Supply Voltage | 5.25V |
| Memory Size | 16KB |
| Memory Type | FLASH, |
| Min Operating Temperature | -40°C |
| Min Supply Voltage | 2.7V |
| Mount | Surface Mount |
| Number of Channels | 5 |
| Number of I/Os | 21 |
| Number of Programmable I/O | 21 |
| Number of Timers/Counters | 4 |
| Oscillator Type | Internal |
| Package Quantity | 73 |
| Packaging | Rail/Tube |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT, Temp Sensor |
| RAM Size | 1.25KB |
| RoHS Compliant | No |
| Series | C8051F32x |
| RoHS | Not Compliant |
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