C8051F350

Overview

The C8051F350 is a mixed-signal System-on-a-Chip microcontroller featuring an 8051 core operating at up to 50 MIPS. It integrates 8 kB of in-system programmable Flash memory and 768 bytes of RAM. The device includes a 24-bit sigma-delta ADC with an 8-input multiplexer and a programmable gain amplifier ranging from 1x to 128x. Two 8-bit current-output DACs, a voltage comparator, and a temperature sensor are also integrated. Digital peripherals include four 16-bit timers, a PCA, SMBus/I2C, SPI, and UART interfaces. It operates on a supply voltage of 2.7 V to 3.6 V.

Feature Summary

• High-speed pipelined 8051-compatible core delivering up to 50 MIPS throughput
• Integrated 24-bit sigma-delta ADC subsystem with programmable gain and analog multiplexer
• On-chip non-intrusive debug interface supporting full-speed in-system debugging without external emulators
• Complete stand-alone system-on-a-chip solution with internal oscillator, power-on reset, and watchdog timer

Applications

• Industrial physical quantity monitoring and control systems
• Precision weighing scales utilizing high-resolution ADC data
• Medical equipment requiring accurate signal acquisition
• Smart sensors for environmental and pressure detection

Procurement Notes

Verify the specific package variant required, as the C8051F350 family offers both 32-pin LQFP and 28-pin MLP options. Confirm that the selected component matches the exact pinout and footprint specifications for your PCB design. Ensure the source documentation aligns with the intended manufacturing process requirements.

Selection Notes

Select this component when a fully integrated mixed-signal MCU is needed for applications demanding high-precision analog measurements. The built-in 24-bit ADC and PGA reduce the need for external amplification circuitry. Consider the 50 MIPS processing speed for handling complex calibration algorithms and real-time data filtering tasks efficiently.

Part Context

The C8051F350 belongs to the C8051F35x series of analog-intensive microcontrollers by Silicon Labs. This family shares the same CIP-51 core architecture but varies in ADC resolution and peripheral configurations. The F350 specifically provides the highest analog performance within the base flash capacity group, distinguishing it from variants like the F351 or F352 which may offer different package sizes or reduced feature sets.

Replacement Considerations

Direct substitutes within the same family include the C8051F351, C8051F352, and C8051F353. Verify pin compatibility if switching between the 32-LQFP and 28-MLP packages, as these are not physically interchangeable.