C8051F531-C-IT

Overview

The C8051F531-C-IT is an 8-bit microcontroller from the C8051F52x/F53x family, manufactured by Silicon Labs. It features a high-speed CIP-51 core operating at up to 25 MHz with 25 MIPS throughput. The device includes 8 kB of ISP Flash memory and 256 bytes of internal data RAM. Key peripherals include a 12-bit ADC with programmable throughput up to 200 ksps, a programmable comparator, and a built-in temperature sensor. Digital interfaces comprise hardware SPI and UART. It supports a supply voltage range of 2.0 V to 5.25 V and operates within a temperature range of –40 °C to +125 °C. The component is housed in a 20-pin TSSOP package.

Feature Summary

• High-performance CIP-51 core with pipelined architecture for efficient instruction execution
• Integrated 12-bit analog-to-digital converter with windowed interrupt capabilities
• On-chip debug circuitry enabling full-speed non-intrusive in-system debugging
• Automotive qualified design compliant with AEC-Q100 standards

Applications

• Industrial control systems requiring robust environmental tolerance
• Automotive embedded applications meeting AEC-Q100 qualification
• Data acquisition systems utilizing high-resolution analog input
• Battery-powered devices leveraging low-power operational modes

Procurement Notes

Verify the specific suffix '-C-IT' against the manufacturer's current product selection guide to confirm availability status. Check for any recent engineering change notices or obsolescence announcements related to the C8051F53x series. Ensure that the 20-pin TSSOP package dimensions align with your PCB footprint requirements. Confirm that the automotive grade designation meets your project's specific reliability standards.

Selection Notes

Select this component when an 8-bit MCU with integrated analog peripherals and automotive qualification is required. Consider the 8 kB Flash capacity for firmware size constraints. Evaluate the 12-bit ADC resolution against application signal processing needs. Verify that the 2.0 V to 5.25 V supply range matches the system power architecture. Assess the pin count and I/O flexibility provided by the digital crossbar for peripheral mapping.

Part Context

This microcontroller belongs to the C8051F52x/F53x family, which combines mixed-signal capabilities with a standard 8051-compatible instruction set. The series is designed for applications demanding high integration and low cost. It utilizes Silicon Labs' C2 interface for programming and debugging. The family shares common architectural features but varies in memory size and peripheral configurations across different model numbers.

Replacement Considerations

Consult the official product selection guide for direct pin-compatible substitutes within the C8051F52x/F53x family. Verify equivalent memory sizes and peripheral sets before substitution. Cross-reference electrical characteristics and package dimensions to ensure mechanical compatibility.