C8051F305-GS

Overview

The C8051F305-GS is a mixed-signal ISP Flash microcontroller from Silicon Labs, featuring a high-speed 8051 core operating at up to 25 MHz. It integrates 2 kB of in-system programmable Flash memory and 256 bytes of internal data RAM. The device supports a supply voltage range of 2.7 V to 3.6 V and operates within a temperature range of –40 °C to +85 °C. Available in 11-pin QFN or 14-pin SOIC packages, it includes digital peripherals such as UART, SMBus, timers, and a Programmable Counter Array.

Feature Summary

• Integrated on-chip debug circuitry enables full-speed, non-intrusive in-system debugging without external emulators.
• Features a pipelined instruction architecture that executes 70% of instructions in one or two system clocks for improved throughput.
• Includes hardware-enhanced serial ports supporting UART and SMBus communication protocols.
• Provides a Programmable Counter Array with capture/compare modules and multiple timer configurations.

Applications

• In-system programming and firmware updates
• Low-power embedded control systems
• Serial communication interfaces

Procurement Notes

Verify the specific package variant (QFN-11 or SOIC-14) required for your design, as pinouts differ between options. Confirm that the component meets the necessary environmental specifications for your application's operating temperature range. Ensure compatibility with existing development tools for the CIP-51 core before finalizing procurement decisions.

Selection Notes

Select this component when a compact mixed-signal solution with integrated debug capabilities is required. Consider the limited 2 kB Flash size for applications with minimal code requirements. Evaluate the available I/O pins against interface needs, noting the absence of an ADC in this specific model compared to other family members.

Part Context

This part belongs to the C8051F30x series of mixed-signal microcontrollers. The family shares a common architecture but varies in memory size and peripheral availability. The C8051F305 specifically offers the smallest Flash capacity in the group while maintaining the standard digital peripheral set.

Replacement Considerations

Check for direct cross-references within the C8051F30x family, such as the C8051F304, which offers increased Flash memory. Verify pin compatibility if substituting with different package types within the same series.