C8051F353R

Overview

The C8051F353R is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F35x family, featuring a high-speed CIP-51 core operating at up to 50 MHz. It integrates 8 KB of in-system programmable Flash memory and 768 bytes of on-chip RAM. The device includes a 24-bit sigma-delta ADC subsystem with an 8-input multiplexer and programmable gain amplifier, alongside two 8-bit current-output DACs. Digital peripherals comprise four 16-bit timers, a PCA, and serial interfaces including UART, SMBus, and SPI. It operates within a supply voltage range of 2.7 V to 3.6 V and supports temperatures from -40°C to +85°C.

Feature Summary

• High-performance pipelined 8051 core delivering up to 50 MIPS throughput with most instructions executing in one or two system clocks.
• Integrated 24-bit sigma-delta ADC subsystem supporting up to eight input channels with programmable gain stages up to 128 times.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without requiring external emulation hardware.
• Flexible clocking architecture with a precision internal oscillator and clock multiplier capable of achieving 50 MHz operation.

Applications

• Analog-intensive data acquisition systems
• Precision sensor interface circuits
• Industrial control applications
• Portable instrumentation

Procurement Notes

Verify the specific package variant required for your design, as the C8051F35x series is available in both 28-pin MLP and 32-pin LQFP configurations. Confirm that the ordering suffix matches the intended mechanical footprint before finalizing procurement. Ensure compatibility with existing development tools such as Simplicity Studio or Keil C51 for firmware deployment.

Selection Notes

Select this component when high-resolution analog conversion is critical, given its integrated 24-bit ADC and programmable gain capabilities. It is suitable for designs requiring significant digital I/O flexibility via the crossbar decoder. Consider the low power consumption modes if battery life is a constraint, noting the typical stop mode current specifications provided in the datasheet.

Part Context

The C8051F353R belongs to the C8051F35x series of fully integrated mixed-signal System-on-Chip microcontrollers. This family distinguishes itself by combining a fast 8051-compatible CPU with extensive analog peripherals on a single die. The series targets applications demanding precise signal conditioning and processing without external components.

Replacement Considerations

Consult the manufacturer's product selection guide for direct pin-to-pin or functional equivalents within the C8051F3xx series. Verify memory sizes and peripheral availability when considering alternative part numbers.

FAQ

What is the resolution of the primary analog-to-digital converter?

The C8051F353R features a 24-bit sigma-delta ADC subsystem with an 8-input multiplexer and programmable gain amplifier.

Does the device support in-circuit programming?

Yes, the 8 KB Flash memory is in-system programmable (ISP) in 512-byte sectors, allowing for field upgrades and non-volatile data storage.