C8051F38C-GQR

Overview

The C8051F38C-GQR is a mixed-signal System-on-Chip microcontroller from the Silicon Labs C8051F38x family, featuring a high-speed 8051 core operating at up to 48 MIPS. It integrates 64 kB of in-system programmable Flash memory and 2.304 kB of RAM within a 48-pin TQFP package. The device includes a USB 2.0 full-speed function controller with an integrated transceiver and clock recovery circuitry. Analog peripherals consist of a 10-bit ADC supporting up to 500 ksps conversion rates, two comparators, and an internal voltage reference. Digital interfaces include two SMBus/I2C ports, two UARTs, one SPI port, and six general-purpose timers.

Feature Summary

• Integrated USB 2.0 full-speed function controller with built-in transceiver and clock recovery eliminating external components
• High-performance pipelined 8051 core executing up to 70% of instructions in one or two system clocks
• On-chip debug circuitry enabling non-intrusive in-system debugging without external emulators
• Versatile analog subsystem with 10-bit ADC, dual comparators, and programmable internal voltage reference

Applications

• USB-enabled data acquisition systems
• Industrial sensor interface modules
• Motor control applications requiring precise timing
• Embedded communication gateways

Procurement Notes

Verify the specific suffix GQR corresponds to the 48-pin TQFP package variant when sourcing. Confirm that the component meets the required temperature range specifications for your intended environment. Ensure compatibility with existing PCB footprints designed for the TQFP-48 form factor. Check for any recent product change notices regarding manufacturing updates.

Selection Notes

Select this model if your design requires a complete USB solution without external PHY components. Consider the 48 MHz processing speed adequate for real-time control loops. Evaluate the 64 kB Flash capacity against your firmware size requirements. Verify that the 2.304 kB RAM suffices for your application's data handling needs.

Part Context

This component belongs to the C8051F38x series of mixed-signal microcontrollers. It shares architectural similarities with other members like the C8051F380 but differs in package type and specific pinout configuration. The series is characterized by its high integration level, combining digital logic, analog peripherals, and memory on a single silicon die.

Replacement Considerations

Direct substitutes within the same family include the C8051F380, C8051F382, and C8051F384, provided they are available in the 48-pin TQFP package. Cross-referencing pinouts is essential as peripheral assignments may vary between specific part numbers in the series.