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| Part Number | C8051F351R | C8051F352R | C8051F353R | C8051F321R | C8051F331R | C8051F350R | C8051F351 |
|---|---|---|---|---|---|---|---|
| Manufacturer | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Core Processor | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 | 8051 |
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit |
| Speed | 50MHz | 50MHz | 50MHz | 25MHz | 25MHz | 50MHz | 50MHz |
| Connectivity | SMBus (2-Wire/I²C), SPI, UART/USART | SMBus (2-Wire/I²C), SPI, UART/USART | SMBus (2-Wire/I²C), SPI, UART/USART | SMBus (2-Wire/I²C), SPI, UART/USART, USB | SMBus (2-Wire/I²C), SPI, UART/USART | SMBus (2-Wire/I²C), SPI, UART/USART | SMBus (2-Wire/I²C), SPI, UART/USART |
| Peripherals | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT | POR, PWM, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT |
| Number of I/O | 17 | 17 | 17 | 21 | 17 | 17 | 17 |
| Program Memory Size | 8KB (8K x 8) | 8KB (8K x 8) | 8KB (8K x 8) | 16KB (16K x 8) | 8KB (8K x 8) | 8KB (8K x 8) | 8KB (8K x 8) |
| Program Memory Type | Flash | Flash | Flash | Flash | Flash | Flash | Flash |
| EEPROM Size | - | - | - | - | - | - | - |
| RAM Size | 768 x 8 | 768 x 8 | 768 x 8 | 2.25K x 8 | 768 x 8 | 768 x 8 | 768 x 8 |
| Voltage - Supply (Vcc/Vdd) | 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 8x24b; D/A 2x8b | A/D 8x16b; D/A 2x8b | A/D 8x16b; D/A 2x8b | A/D 13x10b | - | A/D 8x24b; D/A 2x8b | A/D 8x24b; D/A 2x8b |
| Oscillator Type | 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) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 28-VFQFN Exposed Pad | 32-LQFP | 28-VFQFN Exposed Pad | 28-VFQFN Exposed Pad | 20-VFQFN Exposed Pad | 32-LQFP | 28-VFQFN Exposed Pad |
| Supplier Device Package | 28-MLP (5x5) | 32-LQFP (7x7) | 28-MLP (5x5) | 28-MLP (5x5) | 20-MLP (4x4) | 32-LQFP (7x7) | 28-MLP (5x5) |
