C8051T322-GQR

Overview

The C8051T322-GQR is a high-speed 8-bit microcontroller from Silicon Labs, featuring a CIP-51 core with up to 48 MIPS throughput at a 48 MHz clock. It integrates 64 kB of byte-programmable EPROM and up to 3328 bytes of internal data RAM. The device includes a full-speed USB 2.0 function controller with an integrated transceiver and on-chip clock recovery, eliminating the need for external components. Analog peripherals consist of two comparators with programmable hysteresis and a built-in temperature sensor. Digital interfaces include enhanced SPI, SMBus, and two UARTs.

Feature Summary

• Integrated full-speed USB 2.0 function controller with on-chip clock recovery and transceiver
• High-performance CIP-51 8051-compatible core executing instructions in 1 or 2 system clocks
• Byte-programmable EPROM allowing firmware reprogramming from application code
• On-chip debug circuitry supporting non-intrusive in-system debugging

Applications

• Embedded USB connectivity solutions
• In-application programming systems
• Industrial control interfaces
• Data acquisition devices

Procurement Notes

Verify component authenticity through authorized distributors. Confirm package type matches design requirements. Check datasheet revision for latest electrical characteristics. Ensure ESD handling procedures are followed during assembly. Validate supply voltage ranges against target application specifications.

Selection Notes

Select this MCU for applications requiring embedded USB without external components. Consider EPROM capability for field-upgradable firmware. Evaluate pin count and I/O requirements against available ports. Verify operating temperature range meets environmental constraints. Assess power consumption across different clock modes.

Part Context

Part of the C8051T32x/62x family offering mixed-signal capabilities. Shares architecture with C8051T320, T321, and T323 variants. Differs primarily in memory size and peripheral availability within the same package options. Designed for cost-sensitive embedded systems needing robust analog and digital integration.

Replacement Considerations

C8051T320-GQR, C8051T321-GQR, C8051T323-GQR share identical pinouts and core functionality. Substitution requires verification of specific memory sizes and peripheral configurations. Cross-referencing datasheets is essential before implementation.