
M68HC11E Family — Rev. 5
Data Sheet
MOTOROLA
General Description
15
Data Sheet — M68HC11E Family
Section 1. General Description
1.1  Introduction
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. 
With the exception of a few minor differences, the operation of all E-series MCUs 
is identical. A fully static design and high-density complementary metal-oxide 
semiconductor (HCMOS) fabrication process allow the E-series devices to operate 
at frequencies from 3 MHz to dc with very low power consumption. 
1.2  Features 
Features of the E-series devices include:
M68HC11 CPU 
Power-saving stop and wait modes 
Low-voltage devices available (3.0–5.5 Vdc) 
0, 256, 512, or 768 bytes of on-chip RAM, data retained during standby 
0, 12, or 20 Kbytes of on-chip ROM or EPROM 
0, 512, or 2048 bytes of on-chip EEPROM with block protect for security 
2048 bytes of EEPROM with selectable base address in the MC68HC811E2 
Asynchronous non-return-to-zero (NRZ) serial communications interface 
(SCI) 
Additional baud rates available on MC68HC(7)11E20 
Synchronous serial peripheral interface (SPI) 
8-channel, 8-bit analog-to-digital (A/D) converter 
F
Freescale Semiconductor, Inc.
For More Information On This Product,
  Go to: www.freescale.com
n
.