C8051F047

Overview

The C8051F047 is an 8-bit microcontroller from the Silicon Labs C8051F04x family, featuring a CIP-51 core with up to 25 MIPS throughput at a 25 MHz clock. It integrates 32 kB of in-system programmable Flash and 4352 bytes of internal data RAM. The device includes a 10-bit SAR ADC with 13 external inputs, three analog comparators, and a precision voltage reference. Digital peripherals comprise a Bosch CAN 2.0B controller, hardware SMBus/I2C, SPI, two UARTs, six PCA capture/compare modules, and five general-purpose timers. It operates on a 2.7 V to 3.6 V supply within a –40 °C to +85 °C temperature range.

Feature Summary

• Integrates a high-speed pipelined 8051 core capable of executing 70% of the instruction set in one or two system clocks for improved throughput.
• Features a fully integrated mixed-signal architecture with a 10-bit ADC, analog comparators, and a programmable digital I/O crossbar decoder.
• Supports concurrent operation of multiple serial communication interfaces including CAN, SMBus, SPI, and dual UARTs.
• Provides non-intrusive on-chip JTAG debug and boundary scan capabilities for full-speed in-circuit debugging.

Applications

• Industrial control systems requiring robust communication protocols
• Sensor interface applications utilizing high-resolution analog-to-digital conversion
• Embedded USB or serial communication devices
• Motor control and automation equipment

Procurement Notes

Verify the specific package variant (TQFP-64 or TQFP-100) required for your design, as pin counts differ between C8051F047 variants. Confirm the operating temperature grade matches your environmental specifications. Check for any recent Product Change Notices regarding packaging or assembly updates. Ensure development tools support the C8051F04x series for programming and debugging.

Selection Notes

Select this component when a fully integrated mixed-signal MCU with CAN bus support is needed. It is suitable for designs requiring multiple serial interfaces and high-speed analog acquisition. Consider the 32 kB Flash limit for larger firmware requirements. Evaluate the 10-bit ADC resolution against application needs compared to higher-resolution variants in the family.

Part Context

The C8051F047 belongs to the C8051F04x family of open-source flash microcontrollers. This family shares a common CIP-51 core and peripheral set, differing primarily in memory size and ADC resolution. The F04x series is designed for applications demanding high performance and extensive analog integration in a single chip solution.

Replacement Considerations

Consult the official Silicon Labs compatibility matrix for direct pin-compatible substitutes. Variants such as C8051F046 share similar features but may differ in Flash capacity or package options. Verify electrical characteristics and software compatibility before substitution.