C8051F501-IQR

Overview

The C8051F501-IQR is a mixed-signal ISP Flash MCU from Silicon Labs, 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 (including 4096 bytes XRAM). The device includes a 12-bit ADC with up to 200 ksps sampling rate, two voltage comparators, and an on-chip temperature sensor. Digital peripherals comprise CAN 2.0, LIN 2.1, UART, SMBus, SPI, four 16-bit timers, and a PCA. 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

• High-speed 8051 microcontroller core with pipelined architecture executing 70% of instructions in one or two system clocks.
• Integrated analog peripherals including a 12-bit ADC with selectable gain, two comparators, and an internal temperature sensor.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• Automotive qualified design compliant with AEC-Q100 standards for extended temperature operation.

Applications

• Industrial control systems requiring robust communication interfaces
• Automotive embedded applications meeting AEC-Q100 qualification
• Mixed-signal data acquisition systems utilizing the integrated ADC

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity upon receipt, as the QFN-48 variant requires specific handling protocols. Ensure the ordering suffix matches the required tape-and-reel configuration for automated assembly processes. Cross-reference the revision level against current engineering change notices to maintain design compliance.

Selection Notes

Select this model when automotive qualification and CAN/LIN bus integration are mandatory requirements. The 64 kB Flash capacity suits complex firmware implementations compared to smaller variants. Evaluate the 48-pin QFN footprint against available PCB real estate constraints. Consider the 1.8 V to 5.25 V supply range compatibility with existing power rails before finalizing the bill of materials.

Part Context

This component belongs to the C8051F50x/F51x family of mixed-signal MCUs. It shares architectural similarities with other members like the C8051F500 and C8051F505 but differs in specific peripheral configurations and memory sizes. The IQR suffix indicates a specific tape-and-reel packaging option distinct from the tube-packaged IM variant.

Replacement Considerations

Public confirmed substitute part numbers: C8051F500-IQR, C8051F505-IQR.