C8051F327-GM

Overview

The C8051F327-GM is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F32x family, housed in a 28-pin QFN package. It features a high-speed CIP-51 core operating at up to 25 MHz with 25 MIPS throughput. The device integrates 16 kB of in-system programmable Flash memory and 1536 bytes of internal RAM. Key peripherals include a full-speed USB 2.0 controller with integrated transceiver, enhanced UART, two 16-bit timers, and 15 general-purpose I/O pins that are 5 V tolerant. It supports a supply voltage range of 2.7 V to 5.25 V using an on-chip regulator and operates within a temperature range of –40 °C to +85 °C.

Feature Summary

• Integrates a full-speed USB 2.0 function controller with an on-chip transceiver and clock recovery, eliminating the need for external crystals or resistors.
• Features a pipelined CIP-51 microcontroller core that executes most instructions in one or two system clocks for improved throughput compared to standard 8051 architectures.
• Includes non-intrusive on-chip debug circuitry that facilitates full-speed in-system debugging without requiring external emulator hardware.
• Provides flexible power management through an on-chip voltage regulator supporting operation from 3.6 V to 5.25 V when enabled.

Applications

• Embedded USB connectivity solutions
• In-system programming applications
• Portable instrumentation
• Industrial control systems

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches the 28-QFN requirement. Ensure the specific suffix corresponds to the intended tape-and-reel or tube packaging configuration. Validate that the device meets the required industrial temperature range and voltage specifications for the target application environment before integration.

Selection Notes

Select this component for designs requiring integrated USB functionality without external PHY components. Consider the 16 kB Flash capacity and 1536 byte RAM limits for code size and data storage requirements. Evaluate the 25 MHz maximum clock speed against processing needs. Note that the device is marked as not recommended for new designs; assess long-term availability and lifecycle status carefully.

Part Context

The C8051F327-GM belongs to the C8051F32x/34x family of fully integrated mixed-signal System-on-Chip microcontrollers. These devices combine a high-speed 8051-compatible CPU with extensive digital and analog peripherals on a single chip. The family is designed to simplify embedded USB applications by integrating necessary communication interfaces and memory directly onto the silicon die.

Replacement Considerations

Public confirmed substitute part numbers: C8051F326-GM