C8051F509-IMR

Overview

The C8051F509-IMR is an 8-bit 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 (including 4096 bytes XRAM). The device includes a 12-bit ADC with up to 200 ksps throughput, two comparators, and a built-in temperature sensor. Communication interfaces include CAN 2.0, LIN 2.1, UART, SMBus, and SPI. 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

• Integrates a high-speed 8051 CPU core with pipelined architecture for efficient instruction execution.
• Includes automotive-grade analog peripherals such as a 12-bit ADC, dual comparators, and a temperature sensor.
• Features robust digital communication controllers supporting CAN 2.0 and LIN 2.1 protocols without external crystals.
• Provides flexible I/O configuration via a priority crossbar decoder and supports multiple clock sources.

Applications

• Automotive body control modules requiring LIN and CAN connectivity
• Industrial sensors utilizing integrated analog signal conditioning
• Smart metering systems needing precise voltage monitoring and low-power modes

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific revision matches project requirements, noting the datasheet designation 'Not Recommended for New Designs'. Ensure compatibility with existing firmware architectures before procurement, as legacy status may impact long-term supply availability.

Selection Notes

Select this model when pin-compatible alternatives within the C8051F50x series are insufficient for specific memory or package constraints. Consider the QFN-40 package form factor for space-constrained designs. Evaluate power consumption profiles against application needs, particularly regarding stop mode currents and active operation at varying clock frequencies.

Part Context

This component belongs to the C8051F50x/F51x mixed-signal MCU family by Silicon Laboratories. It shares architectural similarities with the C8051F51x and C8051F58x/59x series, offering pin-for-pin compatibility across these groups. The device is designed for applications demanding high integration and reliability in harsh environments.

Replacement Considerations

Consult official documentation for confirmed substitute part numbers within the same family. Verify functional equivalence regarding memory size, peripheral count, and package dimensions before substitution.