C8051F352-GQ

Overview

The C8051F352-GQ is an 8-bit microcontroller from the Silicon Labs C8051F35x family, featuring a high-speed CIP-51 core with up to 50 MIPS throughput. It integrates 8 kB of in-system programmable Flash memory and 768 bytes of on-chip RAM. The device includes a 24-bit ADC, two 8-bit current-output DACs, and a programmable comparator. Digital peripherals consist of enhanced UART, SMBus, SPI ports, four 16-bit timers, and a Programmable Counter Array. It operates on a 2.7 V to 3.6 V supply within a -40°C to +85°C temperature range.

Feature Summary

• Features a fully 8051-compatible CIP-51 core with pipelined architecture for improved instruction execution speed.
• Includes a 24-bit Analog-to-Digital Converter with no missing codes and programmable conversion rates.
• Integrates two 8-bit current-output Digital-to-Analog Converters (IDACs) and a low-current programmable voltage comparator.
• Provides comprehensive digital communication interfaces including Enhanced UART, SMBus, and SPI.

Applications

• Industrial control systems requiring precise analog signal acquisition
• Data acquisition modules utilizing high-resolution ADC capabilities
• Embedded applications needing integrated current-source outputs for sensor interfacing
• Battery-powered devices benefiting from low-power stop mode operation

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity upon receipt, as the LQFP-32 variant is sensitive to mechanical stress during handling. Ensure that the specific revision level matches design requirements, as silicon revisions may exhibit minor behavioral differences documented in the datasheet's revision history section.

Selection Notes

Select this component when a fully static 8051 architecture is required alongside high-resolution analog front-end capabilities. The internal oscillator provides sufficient accuracy for standard UART operations without external crystals. Consider the 24-bit ADC resolution if system noise levels demand superior signal fidelity compared to standard 12-bit or 16-bit alternatives.

Part Context

This part belongs to the C8051F35x series, which shares architectural similarities with the C8051F350, F351, and F353 variants. These devices differ primarily in memory sizes and peripheral configurations. The GQ suffix denotes the Lead-free 32-pin LQFP package option, suitable for surface-mount assembly processes.

Replacement Considerations

Silicon Labs explicitly marks the C8051F35x family as not recommended for new designs. Evaluate migration paths to newer 8-bit MCU families such as the EFM8 series for updated feature sets and long-term availability support.

FAQ

Does the C8051F352-GQ require an external crystal for basic operation?

No, the device features a precision internal oscillator calibrated to 24.5 MHz with ±2% accuracy, which supports UART operation without external components.

What is the maximum throughput of the CIP-51 core?

The pipelined CIP-51 core achieves up to 50 MIPS throughput, executing approximately 70% of instructions in one or two system clocks.