C8051F388-B-GQR

Overview

The C8051F388-B-GQR is an 8-bit microcontroller from the Silicon Labs C8051F38x family, featuring a CIP-51 core operating at up to 48 MIPS. It integrates 64 kB of in-system programmable Flash and 4352 bytes of RAM within a 48-pin TQFP package. The device supports a supply voltage range of 2.7 V to 5.25 V and operates across a temperature range of –40 °C to +85 °C. Key peripherals include a 10-bit ADC with up to 500 ksps throughput, two comparators, six 16-bit timers, and multiple serial interfaces.

Feature Summary

• Integrated on-chip debug circuitry for full-speed, non-intrusive in-system debugging without external emulators.
• High-speed pipelined CIP-51 architecture executing 70% of instructions in one or two system clocks.
• Comprehensive analog subsystem including a 10-bit ADC with built-in multiplexer and internal voltage reference.
• Flexible clocking options supporting internal oscillators, external crystals, RC circuits, or capacitor modes.

Applications

• Industrial control systems requiring robust I/O and analog signal processing
• Embedded applications utilizing USB or standard serial communication protocols
• Battery-powered devices leveraging low-frequency oscillator power management modes

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific revision level matches design requirements, as the datasheet indicates this series is not recommended for new designs. Ensure ESD protection measures are applied during handling due to the surface-mount TQFP packaging configuration.

Selection Notes

Select this component when legacy 8051 compatibility is required alongside high integration levels. The C8051F388 variant provides larger memory resources compared to the 32 kB versions in the same family. Consider the 48-pin footprint constraints and verify that the 5 V tolerant I/O meets interface voltage requirements for target peripheral connections.

Part Context

This part belongs to the C8051F388/9/A/B Flash MCU family, which combines traditional 8051 instruction sets with modern mixed-signal capabilities. The 'B' suffix typically denotes specific manufacturing revisions or testing criteria within the product line. The GQR suffix indicates the 48-pin TQFP package type with lead-free composition.

Replacement Considerations

Public confirmed substitute part numbers: C8051F388-A-GQR, C8051F389-B-GQR, C8051F38A-B-GQR.