C8051F350R

Overview

The C8051F350R is an 8-bit mixed-signal System-on-Chip microcontroller from the C8051F35x family, manufactured by Silicon Labs. It features a high-speed CIP-51 core operating at up to 50 MIPS with a pipelined architecture. The device integrates 8 KB of in-system programmable Flash memory and 768 bytes of on-chip RAM. Key analog peripherals include a 24-bit or 16-bit ADC with no missing codes, two 8-bit current output DACs, and a programmable comparator. Digital interfaces encompass enhanced UART, SMBus, and SPI. The unit operates within a supply voltage range of 2.7 V to 3.6 V and supports industrial temperature ranges.

Feature Summary

• High-performance 8051-compatible core with pipelined instruction execution for increased throughput
• Integrated 24-bit or 16-bit Sigma-Delta ADC with programmable gain amplifier and low nonlinearity
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators
• Flexible digital crossbar allowing configurable peripheral pin assignments

Applications

• Industrial process control systems requiring precise sensor data acquisition
• Portable battery-powered instrumentation utilizing low-power stop modes
• Data acquisition systems leveraging high-resolution analog-to-digital conversion
• Embedded controllers needing robust in-system programming capabilities

Procurement Notes

Verify the specific suffix 'R' against official documentation to confirm tape-and-reel packaging status, as datasheets may list MLP or LQFP packages generically. Confirm end-of-life status via manufacturer notices, as this series has faced obsolescence announcements. Ensure compatibility with existing PCB footprints for the selected package variant before finalizing orders.

Selection Notes

Select this component when applications demand high-resolution analog measurement combined with standard 8051 software compatibility. The integrated 24-bit ADC eliminates the need for external precision converters in many sensing scenarios. Consider the internal oscillator accuracy if precise timing is required without external crystals. Evaluate power consumption requirements against the specified typical operating currents for active and stop modes.

Part Context

This part belongs to the C8051F35x family of fully integrated mixed-signal microcontrollers. It shares architectural similarities with the C8051F34x series but distinguishes itself through superior analog performance, specifically the higher resolution ADC. The family targets cost-sensitive applications requiring significant on-chip integration to reduce bill-of-materials complexity.

Replacement Considerations

Direct replacements within the same family include C8051F351, C8051F352, and C8051F353, which offer varying memory sizes while maintaining pin compatibility. Verify that any substitute maintains the required ADC resolution and package dimensions.