C8051F041

Overview

The C8051F041 is a mixed-signal System-on-Chip microcontroller from Silicon Labs, featuring an 8051-compatible core with up to 25 MIPS throughput at 25 MHz. It integrates 64 kB of in-system programmable Flash memory and 4352 bytes of internal data RAM. Key analog peripherals include a 12-bit SAR ADC with 13 external inputs, two 12-bit DACs, three analog comparators, and a built-in temperature sensor. Digital interfaces encompass CAN 2.0B, SMBus, SPI, and dual UARTs. The device operates on a 2.7 V to 3.6 V supply within the -40 °C to +85 °C temperature range.

Feature Summary

• Integrates a high-speed pipelined 8051 core capable of executing most instructions in one or two system clocks for efficient processing.
• Features a comprehensive analog subsystem including a 12-bit ADC, dual 12-bit DACs, and programmable comparators for signal conditioning.
• Provides robust digital connectivity with hardware support for CAN 2.0B, SMBus, SPI, and multiple UART serial ports.
• Includes on-chip JTAG debug circuitry enabling non-intrusive in-circuit debugging with breakpoints and watchpoints.

Applications

• Industrial control systems requiring precise analog measurement and digital communication
• Data acquisition systems utilizing high-resolution ADCs and DACs
• Automotive embedded applications compliant with CAN bus standards
• Portable instrumentation and battery-powered devices

Procurement Notes

Verify the specific package type and suffix against the manufacturer's current datasheet revision 1.6, as pinouts may vary between 64-pin and 100-pin TQFP options. Confirm that the 2.7 V to 3.6 V supply voltage range aligns with your system design requirements. Ensure development tools support the CIP-51 architecture for proper programming and debugging workflows.

Selection Notes

Select the C8051F041 when a fully integrated mixed-signal solution is required without external components. It is suitable for designs needing simultaneous analog conversion and digital communication via CAN or UART. Consider this part over variants with lower Flash capacity if code size exceeds 32 kB. Verify that the 5 V tolerant I/O pins meet interface voltage levels for legacy systems.

Part Context

This component belongs to the C8051F04x family of small form factor microcontrollers designed by Silicon Labs. The family shares a common CIP-51 core and peripheral set, differing primarily in memory sizes and package configurations. It represents a generation of highly integrated SoCs aimed at reducing board space and component count in embedded applications.

Replacement Considerations

Consult official Silicon Labs documentation for direct substitutes within the C8051F04x series or newer EFM8 families. Verify pin compatibility and peripheral availability before transitioning to alternative part numbers.

FAQ

What is the maximum operating frequency of the C8051F041?

The C8051F041 supports a maximum clock frequency of 25 MHz, delivering up to 25 MIPS throughput.

Does the C8051F041 include hardware support for CAN communication?

Yes, it features a Bosch CAN 2.0B controller with hardware support for message handling and arbitration.

How many analog-to-digital converter channels are available?

The device includes a 12-bit SAR ADC with 13 external input channels that can be configured as single-ended or differential.