C8051F553-IMR

Overview

The C8051F553-IMR is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F55x family, featuring a high-speed 8051 core operating at up to 50 MHz. It integrates 32 kB of in-system programmable Flash memory and 2304 bytes of internal data RAM (256 + 2048 XRAM). The device includes a 12-bit ADC with up to 200 ksps throughput, two comparators, and multiple digital peripherals including CAN 2.0, LIN 2.1, SMBus, SPI, and UART. It operates on a supply voltage of 1.8 V to 5.25 V and supports automotive qualification with a temperature range of -40°C to +125°C.

Feature Summary

• High-performance pipelined 8051 core delivering up to 50 MIPS throughput
• Integrated 12-bit analog-to-digital converter with burst mode capability
• On-chip debug circuitry enabling full-speed non-intrusive in-system debugging
• Automotive qualified design compliant with AEC-Q100 standards

Applications

• Motor control systems
• Sensor interface circuits
• Automotive parking assistance modules
• Fluid level monitoring applications

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package integrity upon receipt as the unit utilizes a QFN form factor requiring proper handling. Ensure compatibility with existing firmware architectures before integration into production lines. Review latest errata sheets for any known silicon revisions or operational constraints prior to finalizing hardware designs.

Selection Notes

Select this component when a robust 8051 architecture with integrated CAN and LIN controllers is required. Consider the 32 kB Flash capacity for complex application logic. Evaluate power consumption profiles against system requirements, noting typical operating current specifications. Verify that the 24-pin QFN package dimensions fit within the designated PCB footprint constraints.

Part Context

This part belongs to the C8051F55x/56x/57x mixed-signal ISP Flash MCU family by Silicon Laboratories. The series is characterized by its comprehensive peripheral set and crossbar architecture. It represents a specific variant within the broader C8051F portfolio designed for industrial and automotive environments requiring reliable mixed-signal processing capabilities.

Replacement Considerations

Silicon Labs recommends EFM8BB52F16I-QFN20 as a replacement for related end-of-life parts in this family. Verify functional equivalence regarding pinout and peripheral availability before substitution.