C8051F002

Overview

The C8051F002 is a mixed-signal System-on-Chip microcontroller from Silicon Labs, featuring a high-speed 8051-compatible core operating at up to 25 MHz with 25 MIPS throughput. It integrates 32 KB of ISP Flash memory and 256 bytes of internal SRAM. The device includes a 12-bit SAR ADC with programmable gain amplifier, two 12-bit DACs, two analog comparators, and a precision voltage reference. Digital peripherals consist of hardware UART, SMBus, SPI, a Programmable Counter Array (PCA), and multiple timers. It supports on-chip JTAG debug, operates within a 2.7V to 3.6V supply range, and functions across -40°C to +85°C temperatures.

Feature Summary

• High-performance pipelined 8051 CPU executing most instructions in one or two clock cycles
• On-chip full-speed non-intrusive JTAG debug eliminating the need for external emulators
• Integrated mixed-signal peripherals including 12-bit ADC, dual 12-bit DACs, and analog comparators
• Hardware serial interfaces supporting concurrent operation of UART, SMBus, and SPI

Applications

• Portable medical equipment
• Weigh scales
• Test equipment
• Fiber optic systems

Procurement Notes

Verify the specific package variant required, as the C8051F002 is available in 64-pin TQFP, 48-pin TQFP, and 32-pin LQFP configurations. Confirm that the selected revision matches the design requirements for the 2.7V to 3.6V operating voltage range. Ensure development tools support the CIP-51 architecture and JTAG interface for programming and debugging.

Selection Notes

Select the C8051F002 when a fully integrated mixed-signal solution is needed without external components. It is suitable for applications requiring precise analog measurements via the 12-bit ADC and dual DACs alongside robust digital communication. Choose this part over lower-memory variants if 32 KB Flash and 256 bytes RAM are necessary for complex firmware.

Part Context

The C8051F002 belongs to the C8051F0xx/1xx family of mixed-signal MCUs. This family shares a common architecture but varies in memory size and ADC resolution. Unlike the F01x series which uses a 10-bit ADC, the F00x series provides higher precision with a 12-bit ADC. All members feature the same high-speed 8051 core and extensive peripheral set.

Replacement Considerations

Silicon Labs recommends the EFM8BB31F64G-QFN32 as a replacement for related legacy parts like the C8051F021. Verify pin compatibility and software migration requirements when transitioning to newer 8-bit MCU families.

FAQ

Does the C8051F002 require an external emulator for debugging?

No, the device features on-chip JTAG debug circuitry that allows for full-speed, non-intrusive in-system debugging without an external emulator.

What is the maximum instruction execution speed of the C8051F002?

The CIP-51 CPU executes approximately 70% of its instruction set in one or two system clock cycles, achieving up to 25 MIPS at a 25 MHz clock frequency.