C8051F352-GQR

Overview

The C8051F352-GQR is an 8-bit microcontroller from the Silicon Labs C8051F35x family, featuring a high-speed 50 MIPS CIP-51 core. It integrates 8 kB of in-system programmable Flash memory and 768 bytes of on-chip RAM. The device includes a 16-bit sigma-delta ADC subsystem with up to eight input channels and a programmable gain stage, alongside two separate 8-bit current-output DACs. Operating within a supply voltage range of 2.7V to 3.6V, it supports digital interfaces including SMBus, SPI, and UART/USART. The component is housed in a 32-LQFP package.

Feature Summary

• Features a pipelined 8051-compatible instruction set architecture capable of executing 70% of instructions in one or two system clocks for high throughput.
• Includes a 16-bit analog-to-digital converter subsystem with an 8-input multiplexer and programmable gain amplifier for precise signal acquisition.
• Integrates two 8-bit current-output digital-to-analog converters and a low-current programmable comparator with configurable hysteresis.
• Provides comprehensive on-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulation hardware.

Applications

• Analog-intensive embedded control systems requiring mixed-signal processing
• Data acquisition applications utilizing high-resolution ADC inputs
• Industrial monitoring devices leveraging internal temperature sensors
• Battery-powered systems benefiting from low-power stop mode operation

Procurement Notes

Verify component authenticity through authorized distribution channels due to end-of-life status. Confirm package integrity upon receipt as the device utilizes surface-mount technology. Ensure compatibility with existing firmware architectures given the specific peripheral configuration of the C8051F35x series. Review official documentation for any recent design rule changes affecting thermal management or signal routing.

Selection Notes

Select this component for designs prioritizing integrated analog peripherals over high pin counts. The 32-pin LQFP package limits available I/O compared to larger packages in the same family. Evaluate power consumption requirements against the specified operating currents at varying clock frequencies. Consider the availability of development kits for initial prototyping and debugging support.

Part Context

This part belongs to the C8051F35x series of mixed-signal microcontrollers designed for cost-sensitive applications. The series shares a common architectural foundation but varies in memory size and peripheral sets. The C8051F352 specifically targets applications needing moderate Flash capacity with robust analog conversion capabilities. It represents a mature product line within Silicon Labs' portfolio of fully integrated system-on-chip solutions.

Replacement Considerations

EFM8BB31F64I-D-QFN32R is a confirmed public substitute option. Verify pinout compatibility and software migration efforts when transitioning to alternative members of the C8051F35x family or newer generations.

FAQ

What is the maximum sampling rate of the ADC subsystem?

The ADC subsystem supports programmable conversion rates up to 1 ksps.

Can the Flash memory be reprogrammed in-circuit?

Yes, the Flash memory can be reprogrammed even in-circuit, allowing for field upgrades of the firmware.

What clock sources are supported by the device?

The device supports an internal oscillator with 24.5 MHz accuracy, external crystals, RC circuits, capacitors, or external clock signals.