Suntsu Electronics: Your premier supplier of microcontrollers. Our advanced part search tool streamlines the process of finding the ideal microcontroller for your application. Search by part number, manufacturer, or specifications and discover a comprehensive selection of high-performance microcontrollers designed to power your embedded applications.
Microcontrollers
Total Products: 76,307
| Image | Data Sheet | Part Number | Manufacturer | Description | Category | Device Package | Voltage | Operating Temp | Additional Specifications | Qty | Get A Quote |
|---|---|---|---|---|---|---|---|---|---|---|---|
 | C8051F540-IMR | Silicon Labs | IC MCU 8BIT 16KB FLASH 32QFN | Microcontrollers | 32-QFN (5x5) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), LINbus, SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 25 Program Memory Size: 16KB (16K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 25x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 32-QFN (5×5) Package / Case: 32-VFQFN Exposed Pad | 348 | ||
 | C8051F540-IQ | Silicon Labs | IC MCU 8BIT 16KB FLASH 32LQFP | Microcontrollers | 32-LQFP (7x7) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), LINbus, SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 25 Program Memory Size: 16KB (16K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 25x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 32-LQFP (7×7) Package / Case: 32-LQFP | 731 | ||
 | C8051F540-IQR | Silicon Labs | IC MCU 8BIT 16KB FLASH 32LQFP | Microcontrollers | 32-LQFP (7x7) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), LINbus, SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 25 Program Memory Size: 16KB (16K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 25x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 32-LQFP (7×7) Package / Case: 32-LQFP | 739 | ||
 | C8051F541-IM | Silicon Labs | IC MCU 8BIT 16KB FLASH 32QFN | Microcontrollers | 32-QFN (5x5) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 25 Program Memory Size: 16KB (16K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 25x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 32-QFN (5×5) Package / Case: 32-VFQFN Exposed Pad | 859 | ||
 | C8051F541-IMR | Silicon Labs | IC MCU 8BIT 16KB FLASH 32QFN | Microcontrollers | 32-QFN (5x5) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 25 Program Memory Size: 16KB (16K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 25x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 32-QFN (5×5) Package / Case: 32-VFQFN Exposed Pad | 5 | ||
 | C8051F541-IQ | Silicon Labs | IC MCU 8BIT 16KB FLASH 32LQFP | Microcontrollers | 32-LQFP (7x7) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 25 Program Memory Size: 16KB (16K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 25x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 32-LQFP (7×7) Package / Case: 32-LQFP | 392 | ||
 | C8051F541-IQR | Silicon Labs | IC MCU 8BIT 16KB FLASH 32LQFP | Microcontrollers | 32-LQFP (7x7) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 25 Program Memory Size: 16KB (16K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 25x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 32-LQFP (7×7) Package / Case: 32-LQFP | 1,326 | ||
 | C8051F542-IM | Silicon Labs | IC MCU 8BIT 16KB FLASH 24QFN | Microcontrollers | 24-QFN (4x4) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), LINbus, SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 18 Program Memory Size: 16KB (16K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 18x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 24-QFN (4×4) Package / Case: 24-WFQFN Exposed Pad | 568 | ||
 | C8051F542-IMR | Silicon Labs | IC MCU 8BIT 16KB FLASH 24QFN | Microcontrollers | 24-QFN (4x4) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), LINbus, SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 18 Program Memory Size: 16KB (16K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 18x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 24-QFN (4×4) Package / Case: 24-WFQFN Exposed Pad | 905 | ||
 | C8051F543-IM | Silicon Labs | IC MCU 8BIT 16KB FLASH 24QFN | Microcontrollers | 24-QFN (4x4) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 18 Program Memory Size: 16KB (16K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 18x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 24-QFN (4×4) Package / Case: 24-WFQFN Exposed Pad | 766 | ||
 | C8051F543-IMR | Silicon Labs | IC MCU 8BIT 16KB FLASH 24QFN | Microcontrollers | 24-QFN (4x4) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 18 Program Memory Size: 16KB (16K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 18x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 24-QFN (4×4) Package / Case: 24-WFQFN Exposed Pad | 254 | ||
 | C8051F544-IM | Silicon Labs | IC MCU 8BIT 8KB FLASH 32QFN | Microcontrollers | 32-QFN (5x5) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), LINbus, SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 25 Program Memory Size: 8KB (8K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 25x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 32-QFN (5×5) Package / Case: 32-VFQFN Exposed Pad | 546 | ||
 | C8051F544-IMR | Silicon Labs | IC MCU 8BIT 8KB FLASH 32QFN | Microcontrollers | 32-QFN (5x5) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), LINbus, SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 25 Program Memory Size: 8KB (8K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 25x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 32-QFN (5×5) Package / Case: 32-VFQFN Exposed Pad | 1,086 | ||
 | C8051F544-IQ | Silicon Labs | IC MCU 8BIT 8KB FLASH 32LQFP | Microcontrollers | 32-LQFP (7x7) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), LINbus, SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 25 Program Memory Size: 8KB (8K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 25x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 32-LQFP (7×7) Package / Case: 32-LQFP | 107 | ||
 | C8051F544-IQR | Silicon Labs | IC MCU 8BIT 8KB FLASH 32LQFP | Microcontrollers | 32-LQFP (7x7) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), LINbus, SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 25 Program Memory Size: 8KB (8K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 25x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 32-LQFP (7×7) Package / Case: 32-LQFP | 732 | ||
 | C8051F545-IM | Silicon Labs | IC MCU 8BIT 8KB FLASH 32QFN | Microcontrollers | 32-QFN (5x5) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 25 Program Memory Size: 8KB (8K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 25x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 32-QFN (5×5) Package / Case: 32-VFQFN Exposed Pad | 1,154 | ||
 | C8051F545-IMR | Silicon Labs | IC MCU 8BIT 8KB FLASH 32QFN | Microcontrollers | 32-QFN (5x5) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 25 Program Memory Size: 8KB (8K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 25x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 32-QFN (5×5) Package / Case: 32-VFQFN Exposed Pad | 719 | ||
 | C8051F545-IQ | Silicon Labs | IC MCU 8BIT 8KB FLASH 32LQFP | Microcontrollers | 32-LQFP (7x7) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), LINbus, SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 25 Program Memory Size: 8KB (8K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 25x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 32-LQFP (7×7) Package / Case: 32-LQFP | 21 | ||
 | C8051F545-IQR | Silicon Labs | IC MCU 8BIT 8KB FLASH 32LQFP | Microcontrollers | 32-LQFP (7x7) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), LINbus, SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 25 Program Memory Size: 8KB (8K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 25x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 32-LQFP (7×7) Package / Case: 32-LQFP | 448 | ||
 | C8051F546-IM | Silicon Labs | IC MCU 8BIT 8KB FLASH 24QFN | Microcontrollers | 24-QFN (4x4) | N/A | -40°C ~ 125°C (TA) | Core Processor: 8051 Core Size: 8-Bit Speed: 50MHz Connectivity: SMBus (2-Wire/I2C), LINbus, SPI, UART/USART Peripherals: POR, PWM, Temp Sensor, WDT Number of I/O: 18 Program Memory Size: 8KB (8K x 8) Program Memory Type: FLASH RAM Size: 1.25K x 8 Voltage – Supply (Vcc/Vdd): 1.8V ~ 5.25V Data Converters: A/D 18x12b Oscillator Type: Internal Operating Temperature: -40°C ~ 125°C (TA) Mounting Type: Surface Mount Supplier Device Package: 24-QFN (4×4) Package / Case: 24-WFQFN Exposed Pad | 397 |
About Microcontrollers
Microcontroller products are sophisticated digital logic devices that can be programmed by the user. Microcontrollers traditionally include working memory, frequently incorporate mixed-signal peripherals, and are generally used with simpler software paradigms focused on repeating a predefined series of tasks. For applications requiring higher performance or parallel processing, designers may instead use field programmable gate arrays.
We’ve Got You Covered!
If you can’t find the parts you’re looking for in our database, don’t worry! We’re here to help. Simply fill out the form below with the part number you need and your contact information, and we’ll locate it for you. If you prefer to speak to someone directly, our sales team is available at 949.783.7300.
