C8051F850-C-GMR

Overview

The C8051F850-C-GMR is an 8-bit microcontroller from the Silicon Labs C8051F85x family, featuring a high-speed CIP-51 core operating at up to 25 MHz. It integrates 8 kB of in-system programmable flash memory and 512 bytes of RAM (256 + 256). The device includes a 12-bit ADC with up to 16 input channels, two analog comparators, and communication peripherals such as UART, SPI, and I2C/SMBus. Powered by a 2.2 V to 3.6 V supply, it operates within a -40°C to +85°C temperature range and is housed in a 20-pin QFN package.

Feature Summary

• High-performance CIP-51 core with pipelined architecture delivering up to 25 MIPS throughput
• Integrated mixed-signal capabilities including a 12-bit ADC and dual low-current comparators
• On-chip debug circuitry enabling full-speed, non-intrusive system debugging without external emulators
• Flexible I/O configuration with 5 V-tolerant pins and a priority crossbar decoder for peripheral routing

Applications

• Battery chargers
• Electronic toys and games
• Motor control systems
• Optical communications devices

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required package and temperature grade. Check for official notices regarding end-of-life status, as this model may be marked not recommended for new designs. Ensure compatibility with existing firmware and hardware interfaces before procurement.

Selection Notes

Select this MCU for applications requiring a cost-effective 8-bit solution with integrated analog features. The CIP-51 core offers standard 8051 compatibility with enhanced performance. Consider the 20-pin QFN package for space-constrained designs. Evaluate power consumption requirements against the specified idle and active modes. Ensure the 2.2 V to 3.6 V supply voltage aligns with the system design.

Part Context

This component belongs to the Silicon Labs C8051F85x/86x family of low-cost 8-bit MCUs. These devices are designed as highly integrated mixed-signal system-on-chip solutions. The family shares common architectural features, including the CIP-51 core and on-chip debug interface, while varying in memory size and peripheral configurations across different part numbers.

Replacement Considerations

Check for updated revisions within the C8051F85x series. Verify pinout and register compatibility if substituting with other members of the F85x family. Consult official errata sheets for any known silicon revisions that may affect functionality.

FAQ

Does the C8051F850-C-GMR require an external emulator for debugging?

No, the device features on-chip debug circuitry that facilitates full-speed, non-intrusive in-system debugging without the need for an external emulator.

What is the maximum clock frequency of the CIP-51 core in this MCU?

The CIP-51 core supports a maximum system clock frequency of 25 MHz, providing up to 25 MIPS throughput.

Is the flash memory in this device reprogrammable in the field?

Yes, the flash memory is in-system programmable in 512-byte sectors, allowing for firmware updates without removing the chip from the application.