MC68HC908JL8CDW

Microcontrollers Overview

The MC68HC908JL8CDW is an 8-bit microcontroller from the M68HC08 family, manufactured by Freescale Semiconductor. It features a CPU08 core with 8KB of user-programmable Flash memory and 256 bytes of RAM. The device supports dual-voltage operation (3V/5V) with a maximum bus frequency of 8MHz at 5V or 4MHz at 3V. Key peripherals include a 13-channel 8-bit ADC, two 16-bit timers with PWM capabilities, and an SCI serial communication interface. It is housed in a 28-pin PDIP package.

Microcontrollers Feature Summary

• Enhanced M68HC08 CPU architecture providing backward compatibility with legacy M6805 codebases.
• Integrated 13-channel 8-bit analog-to-digital converter for precise signal acquisition.
• Dual 16-bit timer modules supporting input capture, output compare, and pulse width modulation.
• Flexible clocking options including external crystals, ceramic resonators, and internal RC oscillators.

Microcontrollers Applications

• Home appliance control systems
• Security and alarm system controllers
• Automotive body electronics
• Sensor interface modules

Microcontrollers Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm that the specific suffix corresponds to the required package type and temperature range. Check current product status as legacy components may be subject to discontinuation notices. Ensure compliance with relevant environmental regulations such as RoHS requirements for the specific manufacturing batch.

Microcontrollers Selection Notes

Select this model when existing designs utilize M6805 assembly language to minimize migration effort. Choose this variant for applications requiring moderate I/O counts and integrated analog conversion without external components. Consider the 28-pin PDIP package for prototyping or through-hole manufacturing environments. Evaluate power consumption requirements against the available low-power stop modes.

Microcontrollers Part Context

This component belongs to the MC68HC908JL series, which represents a high-performance subset of the broader M68HC08 family. The JL series specifically targets cost-sensitive industrial and consumer markets while maintaining robust peripheral sets. It serves as a bridge between older 8-bit architectures and modern embedded requirements, offering a balance of processing power and peripheral integration.

Microcontrollers Replacement Considerations

Direct pin-compatible replacements within the same family include the MC68HC908JL16, which offers increased memory capacity. Other members of the HC08 family may require schematic modifications due to differing pinouts or peripheral configurations. Verify software compatibility when migrating to variants with different memory sizes or peripheral counts.