C8051F502-IM

Overview

The C8051F502-IM is an 8-bit mixed-signal microcontroller from the C8051F50x family, featuring a high-speed pipelined 8051 core operating at up to 50 MHz. It integrates 64 kB of in-system programmable Flash memory and 4352 bytes of internal data RAM (256 + 4096 XRAM). The device includes a 12-bit ADC with up to 200 ksps throughput, two comparators, and a built-in temperature sensor. Digital peripherals consist of CAN 2.0, LIN 2.1, UART, SMBus, SPI, four 16-bit timers, and a PCA with six capture/compare modules. It supports a supply voltage range of 1.8 V to 5.25 V and operates within a temperature range of –40 °C to +125 °C.

Feature Summary

• Integrated CAN 2.0 and LIN 2.1 controllers that operate without requiring external crystals.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Flexible port I/O architecture with all pins being 5 V tolerant and configurable via a priority crossbar decoder.

Applications

• Automotive systems requiring AEC-Q100 qualification
• Industrial control applications
• Motor control implementations
• Sensor interface circuits

Procurement Notes

Verify component authenticity by checking for manufacturer markings and matching datasheet specifications. Confirm package integrity and pin alignment against the QFN-32 or QFP-32 outline drawings provided in the official documentation. Ensure environmental compliance requirements are met before integration into final assemblies.

Selection Notes

Select this component when a robust 8051 architecture with integrated automotive-grade communication interfaces is required. Consider the 64 kB Flash capacity and 4352 bytes RAM for complex logic handling. Evaluate the 5 V tolerant I/O capability if interfacing with legacy digital systems. Verify that the 1.8 V to 5.25 V supply range aligns with the target system power design.

Part Context

This part belongs to the C8051F50x/F51x Mixed Signal ISP Flash MCU Family produced by Silicon Laboratories. The family provides highly integrated solutions combining analog and digital peripherals on a single chip. The C8051F502 variant specifically targets applications needing CAN and LIN connectivity alongside precise analog signal acquisition capabilities.

Replacement Considerations

Silicon Laboratories recommends EFM8LB12F64E-QFN32 as a replacement for the C8051F502-AM variant. Verify functional compatibility and pinout differences before substituting any components within this product line.

FAQ

Does the C8051F502-IM require an external crystal for CAN and LIN operation?

No, the device features an internal 24 MHz oscillator with ±0.5% accuracy sufficient for CAN and master LIN operation without external crystals.

What is the maximum sampling rate of the onboard ADC?

The 12-bit ADC supports a maximum sampling rate of up to 200 ksps.