C8051F533A-ITR

Overview

The C8051F533A-ITR is an 8-bit microcontroller from the Silicon Labs C8051F53x family, featuring a high-speed 25 MIPS CIP-51 core and 4 kB of ISP Flash memory. It includes 256 bytes of internal data RAM, a 12-bit ADC with up to 16 external inputs, and a programmable comparator. The device supports SPI, UART, and LIN 2.1 interfaces, operates within a supply voltage range of 2.0 V to 5.25 V, and functions across a temperature range of –40 °C to +125 °C. It is housed in a 20-pin TSSOP package.

Feature Summary

• Features a pipelined 8051-compatible core delivering up to 25 MIPS throughput at a 25 MHz system clock.
• Integrates a 12-bit analog-to-digital converter with programmable throughput up to 200 ksps and a built-in temperature sensor.
• Includes hardware support for SPI, UART, and LIN 2.1 communication protocols without requiring an external crystal for LIN master operation.
• Provides on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without an emulator.

Applications

• Protection and measurement devices for coal mine electric power networks
• Industrial control systems requiring LIN bus connectivity
• Battery-powered applications utilizing low-voltage operation

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific suffix matches the required tape-and-reel packaging format. Ensure compliance with RoHS directives and AEC-Q100 automotive qualification standards if applicable to the target environment.

Selection Notes

Select this variant when a 20-pin surface-mount package is required alongside integrated LIN controller capabilities. Consider the 4 kB Flash capacity and 256 B RAM limits against application code size requirements. Evaluate the 2.0 V to 5.25 V operating range against system power constraints.

Part Context

This component belongs to the C8051F52x/F53x family of 8/4/2 kB ISP Flash MCUs. It shares architectural similarities with the C8051F534 but differs in specific peripheral configurations and package options. The family emphasizes mixed-signal integration with high-speed processing capabilities.

Replacement Considerations

Public confirmed substitute part numbers: C8051F533A-IM, C8051F533A-IT.

FAQ

Does the C8051F533A require an external crystal for LIN Master operation?

No, the device features a high-precision internal oscillator (24.5 MHz ±0.5% accuracy) 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.