C8051F509-IM

Overview

The C8051F509-IM is an automotive-grade mixed-signal microcontroller from the Silicon Labs C8051F50x family, featuring a high-speed pipelined 8051 core capable of up to 50 MIPS. It integrates 64 kB of in-system programmable Flash memory and 4352 bytes of internal data RAM. The device includes a 12-bit ADC with up to 200 ksps throughput, two comparators, and a built-in temperature sensor. Digital peripherals include CAN 2.0, LIN 2.1 controllers, UART, SMBus, SPI, and four general-purpose timers. It operates on a supply voltage of 1.8 V to 5.25 V within a temperature range of –40 °C to +125 °C.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliable operation in demanding environments.
• Integrated CAN 2.0 and LIN 2.1 controllers enable direct network connectivity without external transceivers or crystals.
• On-chip debug circuitry supports full-speed, non-intrusive in-system debugging via the C2 interface.
• Flexible clock architecture allows switching between internal oscillators and external sources for optimized power management.

Applications

• Automotive body control modules and gateway applications
• Industrial motor drives and process control systems
• Smart sensors and instrumentation requiring analog signal processing

Procurement Notes

Verify component authenticity through authorized distributors or Silicon Labs directly. Confirm package integrity upon receipt, as QFN packages are sensitive to moisture and physical damage. Ensure ESD precautions are strictly followed during handling and soldering. Cross-reference datasheet revision 1.5 for specific electrical characteristics and pin configurations before finalizing design implementation.

Selection Notes

Select this model when automotive reliability and integrated CAN/LIN capabilities are required. The 48-pin QFN package suits space-constrained designs needing extensive I/O. Consider the C8051F50x series for pin-compatible upgrades across varying memory sizes. Evaluate power consumption requirements against the typical stop mode current specifications. Ensure development tools support the CIP-51 architecture for efficient firmware deployment.

Part Context

The C8051F509-IM belongs to the C8051F50x/F51x mixed-signal ISP Flash MCU family. This series bridges traditional 8051 compatibility with modern system-on-chip integration. It targets applications demanding robust analog performance alongside digital communication protocols. The family emphasizes ease of development through comprehensive on-chip resources and debug features.

Replacement Considerations

Pin-for-pin compatible alternatives within the same family include the C8051F508 and C8051F510/1 variants. Verify memory size and peripheral availability matches project requirements when substituting. Consult the official datasheet for detailed comparison of specific device options within the C8051F50x series.

FAQ

Does the C8051F509-IM require an external crystal for CAN or LIN communication?

No, the device features a precise internal 24 MHz oscillator with ±0.5% accuracy, eliminating the need for an external crystal for CAN 2.0 and master LIN operations.

What is the maximum sampling rate of the integrated ADC?

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