C8051F326-GM

Overview

The C8051F326-GM is an 8-bit mixed-signal microcontroller from Silicon Labs, part of the C8051F32x family. It features a high-speed pipelined 8051 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 function controller with integrated transceiver and clock recovery, an enhanced UART, two 16-bit timers, and 15 general-purpose I/O pins that are 5 V tolerant. It operates on a supply voltage of 2.7 V to 5.25 V using an on-chip voltage regulator and supports temperatures from –40 °C to +85 °C in a 28-pin QFN package.

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 high-speed 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-volatile 16 kB Flash memory allowing in-system programming in 512-byte sectors and 1536 bytes of internal SRAM.
• Provides on-chip debug circuitry supporting full-speed, non-intrusive in-system debugging without requiring external emulator hardware.

Applications

• Embedded USB connectivity solutions
• Portable instrumentation
• Industrial control systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required package type and temperature range. Check current status as this model may be designated as not recommended for new designs; evaluate alternative components if long-term availability is critical for production planning.

Selection Notes

Select this component when a fully integrated USB solution is required without external passive components. Ensure the design accommodates the 28-pin QFN footprint and 5 V tolerant I/O requirements. Consider the 16 kB Flash limit for application code size and verify that the 15 available I/O pins meet the interface count needs.

Part Context

This device belongs to the C8051F32x/34x series of USB microcontrollers from Silicon Labs. These devices are designed as single-chip solutions for embedded applications requiring USB connectivity. The C8051F326 variant specifically offers 16 kB of Flash memory, distinguishing it from other members of the family that may offer larger memory capacities.

Replacement Considerations

Consult official documentation for confirmed substitute part numbers within the same product family or generation before implementation.