C8051F302-GSR

Overview

The Silicon Labs C8051F302-GSR is a mixed-signal ISP Flash MCU featuring an 8-bit CIP-51 core with up to 25 MIPS throughput at 25 MHz. It includes 8 kB of in-system programmable Flash memory and 256 bytes of internal data RAM. The device integrates an 8-bit ADC supporting up to 500 ksps with eight external inputs, a low-current comparator, and hardware-enhanced UART and SMBus ports. Operating voltage ranges from 2.7 V to 3.6 V across a temperature range of –40 °C to +85 °C. It is housed in an 11-pin QFN (3x3 mm) or 14-pin SOIC package.

Feature Summary

• Fully integrated mixed-signal system-on-chip with on-chip debug circuitry for non-intrusive in-system debugging without external emulators.
• Features a high-speed pipelined 8051-compatible core that executes most instructions in one or two system clocks.
• Includes an 8-bit analog-to-digital converter with programmable amplifier gains and a built-in temperature sensor.
• Provides hardware-enhanced serial communication interfaces including UART and SMBus alongside general-purpose I/O.

Applications

• Data acquisition systems requiring analog signal processing
• Portable battery-powered instruments utilizing low power modes
• Industrial control applications within specified temperature ranges
• Simple serial communication interfaces using UART or SMBus

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. Confirm component status as this family may be designated as not recommended for new designs. Ensure compatibility with existing PCB footprints for the selected package variant before procurement.

Selection Notes

Select this model when an 8-bit architecture with integrated analog peripherals is required. The C8051F302 specifically offers an 8-bit ADC unlike other variants in the series. Consider the 256-byte RAM limit for application complexity. Evaluate the 11-pin QFN or 14-pin SOIC package options based on board space constraints.

Part Context

This component belongs to the C8051F30x family of mixed-signal microcontrollers from Silicon Labs. The family shares a common CIP-51 core and peripheral set, differentiated primarily by memory size and the presence of analog converters. The C8051F302 is distinguished by its inclusion of the 8-bit ADC module.

Replacement Considerations

Consult official substitution lists for equivalent pin-compatible devices. Verify functional equivalence regarding the 8-bit ADC and memory specifications if replacing with other members of the C8051F30x series.

FAQ

Does the C8051F302 include an analog-to-digital converter?

Yes, the C8051F302 integrates an 8-bit ADC with up to eight external inputs and a programmable gain amplifier.

What is the maximum operating frequency of the core?

The CIP-51 microcontroller core supports a maximum clock frequency of 25 MHz, delivering up to 25 MIPS throughput.