C8051F865-C-ISR

Overview

The C8051F865-C-ISR is an 8-bit microcontroller from the Silicon Labs C8051F85x/86x family, featuring a high-speed CIP-51 core operating at up to 25 MHz. It integrates 8 kB of in-system programmable Flash memory and 512 bytes of RAM. The device includes a 12-bit ADC with up to 16 input channels, two analog comparators, and multiple communication peripherals including UART, I2C/SMBus, and SPI. It operates within a supply voltage range of 2.2 V to 3.6 V and supports industrial temperature ranges.

Feature Summary

• High-Speed CIP-51 µC Core
• 12-Bit Analog-to-Digital Converter
• On-Chip Debug Circuitry
• Internal Low-Power Oscillator

Applications

• Motor control applications
• Battery chargers
• Electronic toys and games
• Optical communications systems

Procurement Notes

Verify the specific suffix -ISR against the official datasheet to confirm package type (SOIC-16) and temperature grade (-Ix, Industrial). Confirm current status as Not Recommended for New Designs and evaluate alternative components for new projects. Ensure compatibility with existing design constraints before procurement.

Selection Notes

Select this component when a low-cost 8-bit MCU with integrated analog peripherals is required. Consider the 25 MHz performance and 8 kB Flash capacity for resource-constrained embedded designs. Verify that the SOIC-16 package fits the board layout and that the industrial temperature rating meets environmental requirements.

Part Context

This part belongs to the C8051F85x/86x series of mixed-signal microcontrollers. These devices are designed as system-on-chip solutions, combining a standard 8051-compatible core with extensive on-chip resources. The series emphasizes cost-effectiveness and integration for various embedded control applications.

Replacement Considerations

Silicon Labs recommends EFM8BB51F8I-C-QFN20R as a substitute. Evaluate pinout compatibility and peripheral differences when migrating to newer families.