C8051F123-GQ

Overview

The C8051F123-GQ is a mixed-signal System-on-Chip microcontroller from the C8051F12x/13x family, manufactured by Silicon Labs. It features an 8051-compatible CIP-51 core with pipelined architecture achieving up to 100 MIPS throughput at 100 MHz using an on-chip PLL. The device includes 128 kB of in-system programmable Flash memory and 8448 bytes of internal data RAM. Key analog peripherals consist of a 10-bit SAR ADC with programmable throughput up to 100 ksps, two 12-bit DACs, and two analog comparators. Digital interfaces include hardware SMBus, SPI, and dual UARTs. It operates within a voltage range of 3.0–3.6 V for full speed and supports industrial temperatures from -40°C to +85°C in a 100-pin TQFP package.

Feature Summary

• High-speed CIP-51 core with 2-cycle 16 x 16 MAC engine for efficient digital signal processing
• Integrated high-resolution analog subsystem featuring 10-bit ADC and dual 12-bit DACs with timer synchronization
• Comprehensive on-chip debug system supporting non-intrusive in-circuit debugging via JTAG
• Flexible clocking options with internal precision oscillator and phase-locked loop technology

Applications

• Industrial control systems requiring precise analog measurement and control
• Power electronics monitoring and management applications
• Communication equipment utilizing serial interface protocols
• Embedded systems needing high-speed data acquisition with simultaneous DAC output

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as per current manufacturing standards. Check for Not Recommended for New Designs (NRND) status implications regarding long-term supply availability. Ensure packaging specifications match design requirements for the 100-pin TQFP form factor. Validate temperature ratings against operational environmental conditions.

Selection Notes

Select this model when a complete mixed-signal solution is required without external components. The 100-pin TQFP package provides extensive I/O capabilities suitable for complex peripheral integration. Consider the specific analog performance needs, such as the 10-bit ADC resolution and dual DAC outputs, which distinguish it from lower-end variants. Evaluate power consumption profiles across different operating frequencies and voltage ranges to ensure compatibility with system power budgets.

Part Context

This component belongs to the C8051F12x/13x series of fully integrated mixed-signal microcontrollers. These devices are designed to replace discrete analog and digital components in single-chip solutions. The series emphasizes high throughput and rich peripheral integration for cost-sensitive yet performance-critical embedded applications. The C8051F123 variant specifically targets applications benefiting from its combination of substantial memory and advanced analog capabilities.

Replacement Considerations

Consult official Silicon Labs documentation for verified substitute part numbers within the same family or updated generations. Cross-reference pinouts and electrical characteristics carefully when considering alternatives. Note that this specific model carries a Not Recommended for New Designs designation, necessitating careful evaluation of lifecycle status before adoption.