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| Part Number | C8051F34B-GQR | C8051F34D-GQR | C8051F34C-GQR | C8051F340-GQR | C8051F341-GQR | C8051F342-GQR | C8051F343-GQR | C8051F344-GQR | C8051F345-GQR | C8051F346-GQR | C8051F347-GQR | C8051F348-GQR | C8051F349-GQR | C8051F34A-GQR | C8051F34B-GMR | C8051F34B-GQ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| Product Status | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs |
| Core Processor | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 |
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit |
| Speed | 48MHz | 48MHz | 48MHz | 48MHz | 48MHz | 48MHz | 48MHz | 25MHz | 25MHz | 25MHz | 25MHz | 25MHz | 25MHz | 48MHz | 48MHz | 48MHz |
| Connectivity | SMBus (2-Wire/I²C), SPI, UART/USART, USB | SMBus (2-Wire/I²C), SPI, UART/USART, USB | EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART, USB | EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART, USB | EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART, USB | SMBus (2-Wire/I²C), SPI, UART/USART, USB | SMBus (2-Wire/I²C), SPI, UART/USART, USB | EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART, USB | EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART, USB | SMBus (2-Wire/I²C), SPI, UART/USART, USB | SMBus (2-Wire/I²C), SPI, UART/USART, USB | EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART, USB | SMBus (2-Wire/I²C), SPI, UART/USART, USB | SMBus (2-Wire/I²C), SPI, UART/USART, USB | 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, WDT | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT |
| Number of I/O | 25 | 25 | 40 | 40 | 40 | 25 | 25 | 40 | 40 | 25 | 25 | 40 | 25 | 25 | 25 | 25 |
| Program Memory Size | 32KB (32K x 8) | 64KB (64K x 8) | 64KB (64K x 8) | 64KB (64K x 8) | 32KB (32K x 8) | 64KB (64K x 8) | 32KB (32K x 8) | 64KB (64K x 8) | 32KB (32K x 8) | 64KB (64K x 8) | 32KB (32K x 8) | 32KB (32K x 8) | 32KB (32K x 8) | 64KB (64K x 8) | 32KB (32K x 8) | 32KB (32K x 8) |
| Program Memory Type | Flash | Flash | Flash | Flash | Flash | Flash | Flash | Flash | Flash | Flash | Flash | Flash | Flash | Flash | Flash | Flash |
| EEPROM Size | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| RAM Size | 2.25K x 8 | 4.25K x 8 | 4.25K x 8 | 4.25K x 8 | 2.25K x 8 | 4.25K x 8 | 2.25K x 8 | 4.25K x 8 | 2.25K x 8 | 4.25K x 8 | 2.25K x 8 | 2.25K x 8 | 2.25K x 8 | 4.25K x 8 | 2.25K x 8 | 2.25K x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 3.6V | 2.7V ~ 5.25V | 2.7V ~ 5.25V | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 2.7V ~ 3.6V |
| Data Converters | A/D 17x10b | - | - | A/D 20x10b | A/D 20x10b | A/D 21x10b | A/D 21x10b | A/D 20x10b | A/D 20x10b | A/D 21x10b | A/D 21x10b | - | - | A/D 17x10b | A/D 17x10b | A/D 17x10b |
| Oscillator Type | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 32-LQFP | 32-LQFP | 48-TQFP | 48-TQFP | 48-TQFP | 32-LQFP | 32-LQFP | 48-TQFP | 48-TQFP | 32-LQFP | 32-LQFP | 48-TQFP | 32-LQFP | 32-LQFP | 32-VFQFN Exposed Pad | 32-LQFP |
| Supplier Device Package | 32-LQFP (7x7) | 32-LQFP (7x7) | 48-TQFP (7x7) | 48-TQFP (7x7) | 48-TQFP (7x7) | 32-LQFP (7x7) | 32-LQFP (7x7) | 48-TQFP (7x7) | 48-TQFP (7x7) | 32-LQFP (7x7) | 32-LQFP (7x7) | 48-TQFP (7x7) | 32-LQFP (7x7) | 32-LQFP (7x7) | 32-QFN (5x5) | 32-LQFP (7x7) |
