C8051F533-C-IMR

Overview

The C8051F533-C-IMR is an automotive-grade, 8-bit microcontroller from the Silicon Labs C8051F52x/F53x family. It features a high-speed CIP-51 core operating at up to 25 MIPS with a 25 MHz system clock. The device integrates 8 kB of ISP Flash memory and 256 bytes of internal data RAM. Key analog peripherals include a 12-bit ADC with programmable throughput up to 200 ksps, comparators, and a built-in temperature sensor. Digital interfaces comprise SPI, UART, and LIN 2.1 controllers. It operates within a supply voltage range of 2.0 V to 5.25 V and supports an extended industrial temperature range of -40 °C to +125 °C.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for robust operation in demanding environments.
• Integrated LIN 2.1 controller supporting both master and slave modes without requiring an external crystal.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Flexible port I/O configuration with push-pull or open-drain outputs and 5 V tolerance.

Applications

• LIN bus communication nodes in automotive networks
• Industrial sensor interface modules
• Motor control systems
• Low-power embedded monitoring devices

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific ordering suffix matches the required package type and temperature grade. Check for any End-of-Life notices or Last Time Buy announcements prior to finalizing procurement plans. Ensure compliance with RoHS directives and relevant automotive quality standards for your specific application requirements.

Selection Notes

Select this component when automotive reliability and LIN bus integration are primary requirements. The C8051F533-C-IMR offers sufficient processing power for real-time control tasks while maintaining low power consumption. Consider the available GPIO count and peripheral set against your system's connectivity needs. Evaluate the on-chip debug capabilities to streamline development cycles compared to solutions requiring external programming hardware.

Part Context

This part belongs to the C8051F52x/F53x series, designed as System-on-Chip solutions for mixed-signal applications. The family emphasizes ease of use with integrated oscillators, voltage regulators, and comprehensive peripheral sets. These MCUs bridge the gap between traditional 8051 compatibility and modern feature density, targeting cost-sensitive yet performance-critical markets.

Replacement Considerations

EFM8BB52F16I-QFN20

FAQ

Does the C8051F533-C-IMR require an external crystal for LIN Master operation?

No, the device includes a high-precision internal oscillator (24.5 MHz ±0.5%) that supports UART and LIN-Master operation without an external crystal.

What is the maximum throughput of the integrated ADC?

The 12-bit ADC supports a programmable throughput of up to 200 ksps.