Z86E2112FEC View Datasheet(PDF) - Zilog

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Z86E2112FEC

CMOS Z8® OTP MICROCONTROLLER

Zilog 

CUSTOMER P ROCUREMENT S PECIFICA TION

GENERAL DESCRIPTION

The Z86E21 microcontroller (MCU) introduces the next

level of sophistication to single-chip architecture. The

Z86E21 is a member of the Z8 single-chip microcontroller

family with 8 Kbytes of EPROM and 236 bytes of general

purpose RAM.

The Z86E21 is a pin compatible, One-Time-Programmable

(OTP) version of the Z86C21. The Z86E21 contains 8

Kbytes of EPROM memory in place of the 8 Kbyte of ROM

on the Z86C21.

The MCU is housed in a 40-pin DIP, 44-pin Leaded Chip-

Carrier, or a 44-pin Quad Flat Pack, and is manufactured

in CMOS technology. The ROMless pin option is available

on the 44-pin versions only. The MCU can address both

external memory and preprogrammed ROM which en-

ables this Z8 microcomputer to be used in high volume

applications or where code flexibility is required.

Zilog’s CMOS microcontroller offers fast execution, effi-

cient use of memory, sophisticated interrupts, input/output

bit manipulation capabilities, and easy hardware/software

system expansion along with low cost and low power

consumption.

The Z86E21 architecture is based on Zilog’s 8-bit

microcontroller core. The device offers a flexible I/O

scheme, an efficient register and address space structure,

multiplexed capabilities between address/data, I/O, and a

number of ancillary features that are useful in many indus-

trial and advanced scientific applications.

Z86E21

CMOS Z8® OTP

MICROCONTROLLER

The device applications demand powerful I/O capabilities.

The Z86E21 fulfills this with 32-pin dedicated to input and

output. These lines are grouped into four ports. Each port

consists of eight lines, and is configurable under software

control to provide timing, status signals, serial or parallel

I/O with or without handshake, and an address/data bus

for interfacing external memory.

There are three basic address spaces available to support

this wide range of configuration: Program Memory, Data

Memory and 236 General-Purpose registers.

To unburden the program from coping with real-time

problems such as counting/timing and serial data commu-

nication, the Z86E21 offers two on-chip counter/timers with

a large number of user selectable modes, and an asyn-

chronous receiver/transmitter (UART) (see Functional Block

Description).

In ROM Protect Mode, the instructions LDC, LDCI, LDE

and LDEI are disabled when reading address locations

%0000 to %1FFF.

Notes:

All Signals with a preceding front slash, "/", are active Low, e.g.:

B//W (WORD is active Low); /B/W (BYTE is active Low, only).

Power connections follow conventional descriptions below:

Connection

Circuit

Device

Power

VCC

VDD

Ground

GND

VSS

PRODUCT RECOMMENDATIONS

Zilog recommends the following programming equipment for use with this One-Time-Programmable product:

Device

Z86E21

Z86E21

Z86E21

Zilog Support Tool

Z86C1200ZEM ICEBOX™ Emulator* (*Does not support 4K/8K option.)

Data I/O 3900 Programmer* (*Does not support option bits.)

Data I/O Unisite Programmer* (*Does not support option bits.)

Recommended Revision Level

Hardware

Software

B

1.5

1.1

3.7

Some non-Zilog programmers may have different pro-

gramming waveforms, voltages and timings and not all

programmers may meet the programming requirements of

Zilog's One-Time-Programmable products.

If difficulty is encountered in programming a Zilog OTP

product, please contact your local Zilog sales office.

DC-2964-10

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