C8051F300

Overview

The C8051F300 is a mixed-signal ISP Flash microcontroller from Silicon Labs featuring a high-speed 8051 core with up to 25 MIPS throughput at a 25 MHz clock. It integrates 8 kB of in-system programmable Flash memory and 256 bytes of internal data RAM. The device includes an 8-bit ADC supporting up to 500 ksps with eight external inputs, a low-current comparator, and multiple digital peripherals including UART, SMBus, three 16-bit timers, and a Programmable Counter Array. Operating on a 2.7 V to 3.6 V supply, it offers full-speed non-intrusive on-chip debug via the C2 interface.

Feature Summary

• Integrates a fully 8051 compatible pipelined CPU with enhanced interrupt handling and on-chip Flash programming capabilities.
• Includes an 8-bit analog-to-digital converter with programmable gain amplifiers, built-in temperature sensor, and window detector functionality.
• Features a low-current comparator with configurable hysteresis and response time, capable of acting as an interrupt or reset source.
• Provides comprehensive on-chip debug circuitry for non-intrusive in-system debugging without requiring external emulation hardware.

Applications

• Embedded systems requiring compact mixed-signal processing
• Industrial control applications utilizing serial communication protocols
• Sensor interface circuits leveraging integrated ADC and temperature sensing
• Battery-powered devices benefiting from low-power stop mode operation

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package type availability, as the C8051F300 is offered in both QFN-11 and SOIC-14 configurations. Ensure design compliance with RoHS standards and check for specific ordering suffixes that may indicate tape-and-reel packaging versus bulk quantities. Review datasheet revision history for any updates to electrical characteristics or pin definitions prior to finalizing procurement specifications.

Selection Notes

Select the C8051F300 when a complete single-chip solution is required for mixed-signal applications. This model is appropriate for designs needing an 8-bit ADC and comparator within a small footprint. Consider alternative family members like the C8051F301 if additional Flash memory or different peripheral counts are necessary. Evaluate power consumption requirements against typical operating currents to ensure compatibility with system battery life expectations.

Part Context

The C8051F300 belongs to the C8051F30x family of mixed-signal microcontrollers produced by Silicon Laboratories. This series is characterized by its fully integrated system-on-a-chip architecture, combining a fast 8051 processor with extensive analog and digital peripherals. The family emphasizes ease of development through on-chip debug capabilities and in-system programmability, targeting cost-sensitive and space-constrained embedded markets.

Replacement Considerations

Public confirmed substitute part numbers: C8051F301, C8051F302, C8051F303, C8051F304, C8051F305. These variants share the same core architecture and package options but differ in Flash memory size and peripheral configurations. Verify code compatibility and pinout alignment before substitution.

FAQ

What is the maximum execution speed of the C8051F300 core?

The CIP-51 microcontroller core achieves up to 25 MIPS throughput when driven by a 25 MHz system clock.

How does the on-chip debug circuitry function?

It facilitates full-speed, non-intrusive in-system debugging, allowing breakpoints, single stepping, and memory inspection without requiring external emulator hardware.

What are the available clock sources for this MCU?

The device supports an internal oscillator with ±2% accuracy, as well as external oscillators using crystals, RC circuits, capacitors, or external clock signals.