MC68HC705C9ACFN

Microcontrollers Overview

The MC68HC705C9ACFN is an 8-bit microcontroller from the M68HC05 family, featuring a 15,932-byte EPROM and 352 bytes of RAM. It operates on a single 3.0V to 5.5V supply with a maximum clock frequency of 2.1 MHz. The device includes a 16-bit capture/compare timer, asynchronous SCI, synchronous SPI, and a COP watchdog timer. It is housed in a 44-lead PLCC package.

Microcontrollers Feature Summary

• Configurable memory map supporting both C9A and C12A modes via programmable mask option registers.
• Integrated asynchronous serial communications interface (SCI) and synchronous serial peripheral interface (SPI).
• Includes a 16-bit capture/compare timer and computer operating properly (COP) watchdog timer.
• Supports power-saving wait and stop modes with on-chip crystal oscillator connections.

Microcontrollers Applications

• Industrial control systems requiring robust I/O capabilities.
• Embedded applications utilizing asynchronous or synchronous serial communication protocols.
• Battery-powered devices benefiting from low-power wait and stop modes.

Microcontrollers Procurement Notes

Verify component authenticity through authorized NXP channels due to potential availability issues. Confirm that the specific ordering suffix matches the required package type and temperature range. Ensure compatibility with existing programming tools for EPROM configuration before procurement.

Microcontrollers Selection Notes

Select this model when a flexible memory architecture between C9A and C12A configurations is needed. Consider the 44-pin PLCC package constraints for PCB layout. Evaluate the 2.1 MHz speed limit against application timing requirements.

Microcontrollers Part Context

This component belongs to the M68HC05 family of 8-bit microcontrollers. It serves as the EPROM version of the MC68HC05C9A and can be configured as the MC68HC05C12A. The device integrates standard peripherals like timers and serial interfaces within a compact plastic leaded chip carrier package.

Microcontrollers Replacement Considerations

Direct replacements include other members of the M68HC05 family such as the MC68HC705C8ACFN or MC68HC705C9AFN, provided pinouts and memory sizes are compatible. Verify software compatibility when migrating between different memory capacities within the same core architecture.