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Product Detailed Parameters
- Description：IC MCU 8BIT 8KB FLASH 32QFN
- Series：C8051F54x
- Mfr：Silicon Labs
- Package：Tube
- 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
- EEPROM Size：-
- 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 (5x5)
- Package / Case：32-VFQFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The C8051F544-IM is an automotive-grade, mixed-signal ISP Flash MCU from the Silicon Labs C8051F54x family. It features a high-speed 8051 core operating at up to 50 MHz with pipelined architecture. The device includes 16 kB of in-system programmable Flash memory and 1280 bytes of internal data RAM (256 + 1024 XRAM). Key analog peripherals consist of a 12-bit ADC supporting up to 200 ksps and two comparators. Digital interfaces include a LIN 2.1 controller, UART, SMBus, and SPI. It operates on a supply voltage of 1.8 V to 5.25 V and is qualified to AEC-Q100 standards for temperatures ranging from –40 °C to +125 °C.
Feature Summary
- Automotive qualification compliant with AEC-Q100 specifications for extended temperature operation.
- Integrated 12-bit ADC with selectable gain and window detector capabilities.
- Hardware-enhanced serial communication including LIN 2.1, UART, SMBus, and SPI.
- On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging.
Applications
- Motor control systems
- Sensor interface modules
- Parking assistance units
- Seat position and adjustment controllers
Procurement Notes
Verify component status as this part is designated Not Recommended for New Designs. Confirm availability through authorized distributors or check for official replacement recommendations provided by Silicon Labs before finalizing procurement plans.
Selection Notes
Select this component when automotive reliability and LIN bus connectivity are required. Ensure the design utilizes the 32-pin QFN package variant. Verify that the 16 kB Flash capacity and 1280 bytes RAM meet system requirements compared to other members of the C8051F54x series.
Part Context
This microcontroller belongs to the C8051F54x family of mixed-signal ISPs. It shares the same core architecture and peripheral set as siblings like the C8051F540/1/5, distinguished primarily by specific pinout configurations and package options within the 32-pin QFP/QFN form factor.
Replacement Considerations
Silicon Labs recommends the EFM8BB52F16I-QFN20 as a replacement for this end-of-life component.
FAQ
Is the C8051F544-IM suitable for automotive applications?
Yes, it is qualified to AEC-Q100 standards and supports an extended temperature range of –40 °C to +125 °C.
What clock sources are supported by this MCU?
It supports an internal 24 MHz oscillator, external crystals, RC oscillators, and external clock inputs.
