C8051F504-IMR

Overview

The C8051F504-IMR is an 8-bit mixed-signal microcontroller from the C8051F50x/F51x family, featuring a high-speed pipelined 8051 core capable of up to 50 MIPS at 50 MHz. It integrates 64 kB of in-system programmable Flash memory and 4352 bytes of internal data RAM (256 + 4096 XRAM). The device includes a 12-bit ADC with up to 200 ksps throughput, two comparators, and extensive digital peripherals such as CAN 2.0, LIN 2.1, UART, SMBus, and SPI. It operates on a supply voltage of 1.8 V to 5.25 V and supports automotive qualification within a temperature range of –40 °C to +125 °C.

Feature Summary

• Integrates a high-speed 8051 core with pipelined architecture for efficient instruction execution.
• Features a 12-bit analog-to-digital converter with selectable gain and built-in temperature sensor.
• Includes hardware-enhanced communication interfaces supporting CAN 2.0 and LIN 2.1 without external crystals.
• Provides flexible port I/O configuration via a priority crossbar decoder with 5 V tolerant pins.

Applications

• Automotive embedded systems requiring AEC-Q100 compliance
• Industrial control applications utilizing CAN and LIN bus protocols
• Mixed-signal data acquisition systems requiring precise ADC performance

Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the C8051F50x family utilizes multiple packages including QFN and QFP variants. Confirm the exact Flash capacity and pin count corresponding to the base model number before procurement. Ensure compatibility with development tools such as Silicon Labs 8-bit Microcontroller Studio for programming and debugging purposes.

Selection Notes

Select this component when a robust 8051 architecture with integrated mixed-signal capabilities is required. Consider the C8051F504-IMR for designs needing substantial onboard Flash and RAM alongside dedicated CAN and LIN controllers. Evaluate the 48-pin QFN package constraints against board space requirements and thermal dissipation needs for the target application environment.

Part Context

This part belongs to the C8051F50x/F51x series of mixed-signal ISP Flash MCUs by Silicon Laboratories. The family is characterized by its full system-on-chip integration, combining a fast CPU with rich analog and digital peripherals. This specific model variant offers 64 kB of Flash memory and is housed in a 48-pin package, distinguishing it from other members of the series with different memory sizes or pin counts.

Replacement Considerations

Consult the official datasheet errata and product change notices for potential obsolescence information. Verify functional equivalence with other C8051F50x variants if pinout and memory configurations align. Cross-reference with current Silicon Labs recommendations regarding new design implementations for this MCU family.