C8051F504-IQ

Overview

The C8051F504-IQ is an automotive-qualified, mixed-signal ISP Flash MCU from Silicon Labs. It features a high-speed pipelined 8051 core operating at up to 50 MHz with 70% of instructions executing in one or two system clocks. The device integrates 64 kB of in-system programmable Flash memory and 4352 bytes of internal data RAM (including 4096 bytes XRAM). Analog peripherals include a 12-bit ADC supporting up to 200 ksps sampling rate with up to 32 external single-ended inputs, two comparators, and an on-chip temperature sensor. Digital interfaces comprise CAN 2.0, LIN 2.1, UART, SMBus, SPI, four 16-bit timers, and a 16-bit PCA. It operates within a supply voltage range of 1.8 V to 5.25 V and supports an extended industrial/automotive temperature range of –40 °C to +125 °C.

Feature Summary

• Automotive-grade qualification compliant with AEC-Q100 standards for robust operation in demanding environments.
• Integrated CAN 2.0 and LIN 2.1 controllers enabling direct network connectivity without requiring external crystals.
• High-performance 8051 core architecture delivering up to 50 MIPS throughput via pipelined instruction execution.
• On-chip debug circuitry facilitating full-speed, non-intrusive in-system debugging without additional emulation hardware.

Applications

• Motor control systems
• Sensor interface modules
• Parking assistance units
• Fluid level monitoring

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. Confirm that the component status aligns with project lifecycle requirements, as this family may be subject to end-of-life notices. Ensure compatibility with existing development tools and verify that the selected variant meets all necessary environmental and electrical specifications for the target application.

Selection Notes

Select this MCU when automotive reliability and integrated serial communication protocols are required. The inclusion of both CAN and LIN controllers simplifies board design by removing external transceivers or crystals for these buses. Consider the 64 kB Flash capacity and analog integration for applications needing substantial code storage and signal processing capabilities within a single chip solution.

Part Context

This component belongs to the C8051F50x/F51x Mixed Signal ISP Flash MCU Family. These devices are designed as highly integrated system-on-chip solutions combining a powerful microcontroller core with extensive analog and digital peripherals. The family targets applications requiring robust performance and connectivity in industrial and automotive sectors.

Replacement Considerations

Silicon Laboratories recommends the EFM8BB31F64I-QFN32 from the EFM8 Busy Bee series as a replacement for this part.