C8051F300R

Overview

The C8051F300R is a mixed-signal ISP Flash MCU featuring a high-speed 8051 core with up to 25 MIPS throughput at a 25 MHz clock. It integrates 8 kB of in-system programmable Flash memory and 256 bytes of internal data RAM. The device includes an 8-bit ADC supporting up to 500 ksps, a low-current comparator, hardware-enhanced UART and SMBus ports, three 16-bit counter/timers, and a 16-bit Programmable Counter Array. Operating on a 2.7 to 3.6 V supply, it offers full-speed non-intrusive on-chip debug capabilities.

Feature Summary

• High-speed pipelined 8051 core executing 70% of instructions in one or two system clocks
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators
• Integrated analog peripherals including an 8-bit ADC with programmable amplifier gains and a low-current comparator
• Hardware-enhanced serial communication interfaces for UART and SMBus operations

Applications

• In-circuit programming and field upgrades of 8051 firmware via ISP Flash
• Non-volatile data storage applications utilizing the onboard Flash memory
• Mixed-signal systems requiring integrated analog-to-digital conversion and comparison
• Development environments utilizing on-chip debug features for breakpoint and single-stepping

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches the required 11-pin QFN or 14-pin SOIC configuration. Ensure the ordering suffix corresponds to the desired temperature range and packaging format. Cross-reference part numbers with Silicon Labs documentation to confirm compatibility with existing designs.

Selection Notes

Select this model when a fully integrated mixed-signal solution is required within a small form factor. Consider the C8051F300R for designs needing specific analog peripherals like the 8-bit ADC and comparator. Evaluate power consumption requirements against the typical operating current specifications. Verify that the available I/O pins and peripheral counts meet the system interface needs.

Part Context

The C8051F300R belongs to the C8051F30x family of mixed-signal ISP Flash MCUs from Silicon Labs. This family is characterized by its complete integration of digital and analog peripherals on a single chip. The devices are designed to reduce component count and improve system performance through high-speed processing and extensive on-chip resources.

Replacement Considerations

Silicon Labs indicates this family is not recommended for new designs. Review application notes for potential replacements such as the EFM8BB series. Ensure any substitute maintains pinout compatibility and functional equivalence for critical peripherals like the ADC and communication interfaces.

FAQ

What is the maximum throughput of the C8051F300R core?

The CIP-51 microcontroller core achieves up to 25 MIPS throughput when operating with a 25 MHz clock.

Does the C8051F300R support external emulator hardware?

No, the device features on-chip debug circuitry that facilitates full-speed, non-intrusive in-system debugging without requiring external emulation systems.

What analog peripherals are included in the C8051F300R?

The device includes an 8-bit ADC with up to 500 ksps sampling rate and a low-current comparator with programmable hysteresis and response time.