C8051F552-IM

Overview

The C8051F552-IM is a mixed-signal ISP Flash MCU from the Silicon Labs C8051F55x family. It features a high-speed 8051 microcontroller core with up to 50 MIPS throughput at a 50 MHz clock frequency. The device includes 32 kB of in-system programmable Flash memory and 2304 bytes of internal data RAM. Key analog peripherals consist of a 12-bit ADC supporting up to 200 ksps, two comparators, and an on-chip voltage reference. Digital interfaces include CAN 2.0, LIN 2.1, UART, SMBus, and SPI. The unit operates within a supply voltage range of 1.8 V to 5.25 V and supports automotive qualification standards.

Feature Summary

• Integrated CAN 2.0 and LIN 2.1 controllers that operate 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
• Programmable 12-bit ADC with selectable gain and built-in temperature sensor

Applications

• Automotive embedded control systems
• Industrial communication gateways
• Data acquisition modules
• Sensor interface nodes

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches the required footprint for PCB layout. Ensure the specific revision level meets project requirements. Check for any obsolescence notices as this family may be designated Not Recommended for New Designs. Validate electrical characteristics against environmental operating conditions.

Selection Notes

Select this model when a robust 8051 architecture requires integrated automotive-grade serial communication capabilities. The inclusion of hardware CAN and LIN controllers simplifies network design by removing external transceiver dependencies. Consider the 32 kB Flash capacity for complex firmware applications. Evaluate 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 C8051F55x/56x/57x Mixed Signal ISP Flash MCU Family. These devices are designed as highly integrated system-on-a-chip solutions combining digital processing with analog signal conditioning. The family targets applications demanding reliable performance in electrically noisy environments, such as automotive and industrial sectors, while maintaining software compatibility with standard 8051 toolchains.

Replacement Considerations

C8051F550-IM

FAQ

Does the C8051F552-IM require an external crystal for CAN bus operation?

No, the device features an internal oscillator with sufficient accuracy for CAN and master LIN operation, eliminating the need for an external crystal.

What is the maximum sampling rate of the onboard ADC?

The 12-bit ADC supports a maximum sampling rate of up to 200 ksps.