C8051F554-IM

Overview

The C8051F554-IM is an automotive-qualified, mixed-signal ISP Flash MCU from Silicon Labs. It features a high-speed 8051 core with up to 50 MIPS throughput at 50 MHz. The device includes 32 kB of in-system programmable Flash memory and 2304 bytes of internal data RAM (256 + 2048 XRAM). Analog peripherals consist of a 12-bit ADC supporting up to 200 ksps and two comparators. Digital 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

• Automotive qualified to AEC-Q100 standards for operation in harsh environments
• Integrated CAN 2.0 and LIN 2.1 controllers without requiring external crystals
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging
• High-speed pipelined 8051 core executing most instructions in one or two system clocks

Applications

• Automotive body electronics and control modules
• Industrial motor control systems
• Sensor interface nodes requiring analog-to-digital conversion
• Networked communication gateways using CAN or LIN protocols

Procurement Notes

Verify component authenticity through authorized channels as the part is marked Not Recommended for New Designs. Confirm package integrity upon receipt, specifically checking for QFN-24 solder joint defects. Ensure design reviews account for the discontinued status when planning long-term production lifecycles. Validate that current inventory meets functional requirements before finalizing procurement orders.

Selection Notes

Select this component for designs requiring robust automotive-grade reliability combined with integrated network controllers. The inclusion of both CAN and LIN interfaces simplifies board layout by removing external transceivers. Consider the 12-bit ADC resolution and speed for precision measurement applications. Evaluate power consumption profiles against system requirements, noting typical operating currents at maximum clock speeds.

Part Context

This microcontroller belongs to the C8051F55x/56x/57x family of mixed-signal ISPs. These devices are designed for high-performance embedded control applications. The family shares common architectural features including the CIP-51 core and extensive peripheral sets. This specific model represents a variant optimized for automotive compliance and specific memory configurations.

Replacement Considerations

Public confirmed substitute part numbers: C8051F550-IM.