This document contains a detailed description of the M68HC11 E series of 8-bit microcontroller units (MCUs). These MCUs all combine the M68HC11 central processor unit (CPU) with high-performance, on-chip peripherals.

The E series is comprised of many devices with various configurations of:
• Random-access memory (RAM)
• Read-only memory (ROM)
• Erasable programmable read-only memory (EPROM)
• Electrically erasable programmable read-only memory (EEPROM)
• Several low-voltage devices are also available.