| Part Number | C8051F342-GQR | C8051F34A-GQR | 
|---|---|---|
| Manufacturer | Silicon Labs | Silicon Labs | 
| Category | Embedded - Microcontrollers | Embedded - Microcontrollers | 
|   |   | |
| Product Status | Not For New Designs | Not For New Designs | 
| Core Processor | 8051 | 8051 | 
| Core Size | 8-Bit | 8-Bit | 
| Speed | 48MHz | 48MHz | 
| Connectivity | SMBus (2-Wire/I²C), SPI, UART/USART, USB | SMBus (2-Wire/I²C), SPI, UART/USART, USB | 
| Peripherals | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT | 
| Number of I/O | 25 | 25 | 
| Program Memory Size | 64KB (64K x 8) | 64KB (64K x 8) | 
| Program Memory Type | Flash | Flash | 
| EEPROM Size | - | - | 
| RAM Size | 4.25K x 8 | 4.25K x 8 | 
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 
| Data Converters | A/D 21x10b | A/D 17x10b | 
| Oscillator Type | Internal | Internal | 
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 32-LQFP | 32-LQFP | 
| Supplier Device Package | 32-LQFP (7x7) | 32-LQFP (7x7) |