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The MC68HC11E9 high-density complementary semiconductor(HCMOS) high-
performance microcontroller unit(MCU) includes the following features:
12 Kbytes of ROM, 512 bytes of EEPROM, and 512 bytes of RAM. The
MC68HC11E9 is a high-speed, low-power chip with a multiplexed bus
capable of running at up to 3 MHz. Its fully static design allows it
to operate at frequencies down to dc.
Some of the Features are:
- M68HC11 CPU.
- Power Saving STOP and WAIT Modes.
- 12 Kbytes of On-Chip ROM.
- 512 Bytes of On-Chip EEPROM with Block Protect for Extra Security.
- 512 Bytes of On-Chip RAM.
- 8-Bit Pulse Accumulator.
- Real-Time Interrupt Circuit.
- Synchronous Serial Peripheral Interface(SPI).
- Asynchronous Nonreturn to Zero (NRZ) Serial Communications Interface(SCI).
- 8-Channel 8-Bit Analog-to-Digital (A/D) Converter.
- 38 General-Purpose Input/Output (I/O) Pins.
- 16 Bidirectional I/O Pins.
- 11 Input-Only Pins, 11 Output-Only Pins.
The structure of the MC68HC11E9 MCU is shown in Figure 1.
Figure 24: The MC68HC11E9 block diagram.
Matanya Elchanani
Wed Dec 18 17:00:21 EST 1996