MC68HC908SR12CB

Microcontrollers Overview

The MC68HC908SR12CB is an 8-bit microcontroller from the M68HC08 series, featuring a 42-pin DIP package. It integrates a CPU08 core operating at up to 8 MHz with 16-bit addressing capabilities. The device includes FLASH program memory and supports in-system programming. Key peripherals consist of two independent Timer Interface Modules (TIM), a Serial Communication Interface (SCI), and a Multi-Master I2C interface (MMIIC). An integrated analog module provides programmable amplifiers, temperature sensing, and current detection for precise control applications.

Microcontrollers Feature Summary

• Integrated analog circuitry with programmable amplifiers and current detection
• Dual Timer Interface Modules supporting input capture and PWM generation
• Serial communication via SCI and multi-master I2C interfaces
• FLASH-based memory architecture enabling field reprogramming

Microcontrollers Applications

• Battery charging control systems
• Industrial process monitoring
• Consumer electronics power management
• Automotive electronic modules

Microcontrollers Procurement Notes

Verify the specific suffix CB against official NXP or Freescale documentation to confirm pinout and package dimensions. Ensure compatibility with existing 42-pin DIP footprints. Confirm that the internal clock configuration matches system requirements, as monitor mode entry depends on specific external clock frequencies and pin states.

Microcontrollers Selection Notes

Select this component when analog signal conditioning and digital control are required within a single chip. The built-in programmable amplifiers and current sensors reduce external component count. Verify that the 8 MHz bus speed meets real-time processing needs. Check if the 42-pin DIP package fits the mechanical constraints of the target enclosure.

Microcontrollers Part Context

This part belongs to the Motorola/Freescale M68HC08 family, designed for cost-sensitive embedded applications. It maintains upward compatibility with the older M68HC05 instruction set while offering enhanced performance through the CPU08 core. The SR12 variant specifically targets applications requiring robust analog integration alongside standard digital I/O and communication interfaces.

Microcontrollers Replacement Considerations

Direct substitutes include other members of the MC68HC908SRxx series with compatible pinouts. Cross-reference with NXP's current HC08 portfolio for end-of-life status. Ensure any replacement maintains the same FLASH technology and peripheral set, particularly the TIM and analog modules.