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| Part Number | C8051F561-IM | C8051F561-IQ | C8051F568-IM | C8051F581-IM | C8051F567-IM | C8051F566-IM | C8051F565-IM | C8051F564-IM | C8051F562-IM | C8051F561-IMR | C8051F571-IM | C8051F569-IM | C8051F563-IM | C8051F591-IM | C8051F531-IM | C8051F541-IM | C8051F551-IM | C8051F560-IM |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | Silicon Labs | Silicon Labs |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active | Obsolete | Active | Active | Active |
| Core Processor | 8051 | 8051 | 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 | 8-Bit | 8-Bit |
| Speed | 50MHz | 50MHz | 50MHz | 50MHz | 50MHz | 50MHz | 50MHz | 50MHz | 50MHz | 50MHz | 50MHz | 50MHz | 50MHz | 50MHz | 25MHz | 50MHz | 50MHz | 50MHz |
| Connectivity | SMBus (2-Wire/I²C), CANbus, SPI, UART/USART | SMBus (2-Wire/I²C), CANbus, SPI, UART/USART | EBI/EMI, SMBus (2-Wire/I²C), CANbus, LINbus, SPI, UART/USART | EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART | SMBus (2-Wire/I²C), SPI, UART/USART | SMBus (2-Wire/I²C), LINbus, SPI, UART/USART | SMBus (2-Wire/I²C), CANbus, SPI, UART/USART | SMBus (2-Wire/I²C), CANbus, LINbus, SPI, UART/USART | SMBus (2-Wire/I²C), LINbus, SPI, UART/USART | SMBus (2-Wire/I²C), CANbus, SPI, UART/USART | EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART | CANbus, EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART | SMBus (2-Wire/I²C), SPI, UART/USART | EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART | SPI, UART/USART | SMBus (2-Wire/I²C), SPI, UART/USART | SMBus (2-Wire/I²C), CANbus, SPI, UART/USART | SMBus (2-Wire/I²C), CANbus, LINbus, SPI, UART/USART |
| Peripherals | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | 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, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT |
| Number of I/O | 25 | 25 | 33 | 40 | 25 | 25 | 25 | 25 | 25 | 25 | 33 | 33 | 25 | 33 | 16 | 25 | 18 | 25 |
| Program Memory Size | 32KB (32K x 8) | 32KB (32K x 8) | 32KB (32K x 8) | 128KB (128K x 8) | 16KB (16K x 8) | 16KB (16K x 8) | 16KB (16K x 8) | 16KB (16K x 8) | 32KB (32K x 8) | 32KB (32K x 8) | 32KB (32K x 8) | 32KB (32K x 8) | 32KB (32K x 8) | 96KB (96K x 8) | 8KB (8K x 8) | 16KB (16K 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 | Flash | Flash |
| EEPROM Size | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| RAM Size | 2.25K x 8 | 2.25K x 8 | 2.25K x 8 | 8.25K x 8 | 2.25K x 8 | 2.25K x 8 | 2.25K x 8 | 2.25K x 8 | 2.25K x 8 | 2.25K x 8 | 2.25K x 8 | 2.25K x 8 | 2.25K x 8 | 8.25K x 8 | 256 x 8 | 1.25K x 8 | 2.25K x 8 | 2.25K x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.8V ~ 5.25V | 1.8V ~ 5.25V | 1.8V ~ 5.25V | 1.8V ~ 5.25V | 1.8V ~ 5.25V | 1.8V ~ 5.25V | 1.8V ~ 5.25V | 1.8V ~ 5.25V | 1.8V ~ 5.25V | 1.8V ~ 5.25V | 1.8V ~ 5.25V | 1.8V ~ 5.25V | 1.8V ~ 5.25V | 1.8V ~ 5.25V | 2V ~ 5.25V | 1.8V ~ 5.25V | 1.8V ~ 5.25V | 1.8V ~ 5.25V |
| Data Converters | A/D 25x12b | A/D 25x12b | A/D 32x12b | A/D 32x12b | A/D 25x12b | A/D 25x12b | A/D 25x12b | A/D 25x12b | A/D 25x12b | A/D 25x12b | A/D 32x12b | A/D 32x12b | A/D 25x12b | A/D 32x12b | A/D 16x12b | A/D 25x12b | A/D 18x12b | A/D 25x12b |
| Oscillator Type | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal | Internal |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°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 | Surface Mount | Surface Mount |
| Package / Case | 32-VFQFN Exposed Pad | 32-LQFP | 40-VFQFN Exposed Pad | 48-VFQFN Exposed Pad | 32-VFQFN Exposed Pad | 32-VFQFN Exposed Pad | 32-VFQFN Exposed Pad | 32-VFQFN Exposed Pad | 32-VFQFN Exposed Pad | 32-VFQFN Exposed Pad | 40-VFQFN Exposed Pad | 40-VFQFN Exposed Pad | 32-VFQFN Exposed Pad | 40-VFQFN Exposed Pad | 20-VFQFN Exposed Pad | 32-VFQFN Exposed Pad | 24-WFQFN Exposed Pad | 32-VFQFN Exposed Pad |
| Supplier Device Package | 32-QFN (5x5) | 32-LQFP (7x7) | 40-QFN (6x6) | 48-QFN (7x7) | 32-QFN (5x5) | 32-QFN (5x5) | 32-QFN (5x5) | 32-QFN (5x5) | 32-QFN (5x5) | 32-QFN (5x5) | 40-QFN (6x6) | 40-QFN (6x6) | 32-QFN (5x5) | 40-QFN (6x6) | 20-QFN (4x4) | 32-QFN (5x5) | 24-QFN (4x4) | 32-QFN (5x5) |
