C8051F971-A-GMR

Overview

The C8051F971-A-GMR is an 8-bit microcontroller from the Silicon Labs C8051F series, utilizing a standard 8051 core. It features 32 KB of in-system programmable Flash memory and 8 KB of RAM. The device operates at clock speeds up to 25 MHz and supports a supply voltage range of 1.8 V to 3.6 V. It integrates a comprehensive analog subsystem including 28-channel 10-bit ADCs, three 16-bit PWM outputs, and two I2C interfaces. Connectivity options include one SPI interface and one UART. The component is housed in a 32-pin QFN package with dimensions of 5 x 5 mm and is rated for operation between -40°C and +85°C.

Feature Summary

• Integrates high-resolution analog capabilities with 28 multiplexed 10-bit ADC channels for precise signal acquisition.
• Includes dedicated hardware peripherals such as three 16-bit PWM generators and multiple communication interfaces (SPI, UART, I2C).
• Supports in-system programming via standard debug interfaces without requiring external programmer hardware.

Applications

• Industrial sensor nodes requiring multi-channel analog data acquisition
• Battery-powered devices benefiting from low-power operational modes
• Motor control applications utilizing integrated PWM generation

Procurement Notes

Verify the specific suffix 'GMR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 'A' grade designation meets the thermal and electrical specifications for your target operating environment. Ensure compatibility with the 32-QFN footprint during PCB layout finalization.

Selection Notes

Select this model when a balance of moderate code storage and extensive analog input channels is required within a compact form factor. It is suitable for designs needing multiple PWM outputs for power management or motor driving without additional discrete components. Consider alternative pin counts if the 24 I/O lines are insufficient for complex peripheral integration.

Part Context

This component belongs to the C8051F9xx family of mixed-signal microcontrollers designed for cost-sensitive embedded applications. The series emphasizes high integration by combining processing, memory, and analog functions on a single die. It serves as a drop-in replacement for legacy 8051 architectures while offering enhanced peripheral density and lower power consumption profiles.

Replacement Considerations

Publicly confirmed substitute part numbers were not identified in the provided documentation. Verify cross-compatibility with other C8051F9xx variants based on specific memory and I/O requirements before substitution.