C8051F804-GSR

Overview

The C8051F804-GSR is a mixed-signal ISP Flash MCU from the C8051F80x-83x family, featuring a high-speed 8051 core with up to 25 MIPS throughput at a 25 MHz clock. It integrates 16 kB of in-system programmable Flash and 512 bytes of internal data RAM. Key peripherals include a 10-bit ADC supporting up to 500 ksps, a capacitive sense module with 16-bit resolution, and an on-chip debug circuit. The device operates within a supply voltage range of 1.8 V to 3.6 V and supports industrial temperature ranges from -40 °C to +85 °C.

Feature Summary

• Integrated capacitive sense module supporting buttons, sliders, wheels, and proximity sensing with auto-scan capabilities
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators
• High-speed pipelined 8051 core executing 70% of instructions in one or two system clocks
• Mixed-signal architecture combining analog peripherals like comparators and temperature sensors with digital serial interfaces

Applications

• Capacitive touch interface implementations for user input devices
• Embedded systems requiring in-system programming and field upgrades
• Industrial control applications utilizing mixed-signal processing
• Portable devices operating on low-voltage power supplies

Procurement Notes

Verify component authenticity through authorized Silicon Labs distributors. Confirm package type matches design requirements, as the series offers multiple options. Check for current lifecycle status, as this specific model may be marked not recommended for new designs. Ensure environmental compliance documentation aligns with target market regulations before finalizing procurement orders.

Selection Notes

Select this MCU when a complete mixed-signal solution with integrated capacitive sensing is required. The inclusion of on-chip debug reduces development hardware costs. Consider the 16 kB Flash limit for firmware size constraints. Evaluate the 1.8 V to 3.6 V supply range against system power budgets. Verify that the available I/O count meets interface requirements for the specific application design.

Part Context

This component belongs to the C8051F80x-83x family of mixed-signal microcontrollers. These devices are designed as single-chip solutions integrating the CIP-51 core with extensive analog and digital peripherals. The family emphasizes ease of development through built-in debug features and in-system programmability, targeting cost-sensitive embedded applications requiring mixed-signal capabilities.

Replacement Considerations

Public confirmed substitute part numbers: C8051F804-GS, C8051F804-GST.