C8051F536A-IMR

Overview

The C8051F536A-IMR is an automotive and industrial microcontroller from Silicon Labs, featuring a high-speed 8051 core with up to 25 MIPS throughput at a 25 MHz system clock. It integrates 8 kB of in-system programmable Flash memory and 256 bytes of internal data RAM. The device includes a 12-bit ADC with programmable throughput up to 200 ksps, supporting up to six external analog inputs. Digital peripherals include hardware SPI, UART, and a LIN 2.1 controller. It operates on a supply voltage of 2.0 V to 5.25 V and is qualified for temperatures ranging from -40 °C to +125 °C.

Feature Summary

• Automotive-grade qualification compliant with AEC-Q100 standards for robust operation in demanding environments.
• Integrated 12-bit Analog-to-Digital Converter with programmable throughput and built-in temperature sensor capabilities.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without requiring external emulators.
• LIN 2.1 Controller support allowing master and slave operation without the need for an external crystal.

Applications

• Motor control systems
• Sensor interface circuits
• Parking assistance modules
• Seat position and adjustment controllers

Procurement Notes

Verify the specific suffix 'IMR' corresponds to the required tape-and-reel packaging configuration during procurement. Confirm that the component meets the necessary AEC-Q100 reliability standards for your target application environment. Ensure compatibility with the 2.0 V to 5.25 V supply voltage range specified in the datasheet electrical characteristics.

Selection Notes

Select this component when an automotive-qualified 8-bit MCU with integrated LIN communication is required. It is suitable for designs needing a 12-bit ADC and moderate Flash capacity within a compact package. Consider the 25 MIPS performance limit and 256 bytes of RAM when evaluating software complexity. Verify pinout compatibility if replacing legacy devices in existing layouts.

Part Context

This part belongs to the C8051F52x/F53x family of mixed-signal System-on-a-Chip solutions. These devices are designed for applications requiring high integration and automotive reliability. The family shares architectural similarities but varies in memory size and peripheral counts. This specific model offers a balance of processing power and analog capabilities for embedded control tasks.

Replacement Considerations

Silicon Labs recommends EFM8BB52F16I-QFN20 as a replacement for this part due to its End-of-Life status. Verify pinout and peripheral compatibility before substitution. Note that the recommended alternative may have different memory architectures or voltage requirements.

FAQ

Is the C8051F536A-IMR suitable for automotive applications?

Yes, the device is automotive qualified and compliant with AEC-Q100 specifications, supporting an operating temperature range of -40 °C to +125 °C.

What is the maximum throughput of the CPU core?

The high-speed 8051 µC core provides up to 25 MIPS throughput when operating with a 25 MHz system clock.

Does the device require an external crystal for LIN communication?

No, the integrated LIN 2.1 Controller supports both master and slave modes without requiring an external crystal.