ZILOG Z86E2116PSC, Z86E2116VEC, Z86E2116VSC, Z86E2112FEC, Z86E2112FSC Datasheet

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C

USTOMER

P

ROCUREMENT

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PECIFICA TION

Z86E21

CMOS Z8® OTP
MICROCONTROLLER

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 Chip­Carrier, 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 en­ables this Z8 microcomputer to be used in high volume
applications or where code flexibility is required.

Zilog’s CMOS microcontroller offers fast execution, effi­cient 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 indus­trial and advanced scientific applications.

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 commu­nication, the Z86E21 offers two on-chip counter/timers with
a large number of user selectable modes, and an asyn­chronous 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 V

CC

V

DD

Ground GND V

SS

DC-2964-10

PRODUCT RECOMMENDATIONS

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

Recommended Revision Level

Device Zilog Support Tool Hardware Software

Z86E21 Z86C1200ZEM ICEBOX™ Emulator* (*Does not support 4K/8K option.) B 1.5
Z86E21 Data I/O 3900 Programmer* (*Does not support option bits.) 1.1
Z86E21 Data I/O Unisite Programmer* (*Does not support option bits.) 3.7

Some non-Zilog programmers may have different pro­gramming 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.

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GENERAL DESCRIPTION (Continued)

Port 3

UART

Counter/

Timers

(2)

Interrupt

Control

Port 2

I/O

(Bit Programmable)

ALU

FLAGS

Register

Pointer

Register File

256 x 8-Bit

Machine Timing and

Instruction Control

Prg. Memory

8192 x 8-Bit

Program

Counter

Vcc GND XTAL

44

Port 0

Output Input

Address or I/O

(Nibble Programmable)

8

Port 1

Address/Data or I/O

(Byte Programmable)

/AS /DS R//W /RESET

Functional Block Diagram

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PIN DESCRIPTION

Standard Mode

40-Lead DIP Pin Assignments

40-Lead DIP Pin Identification

Pin # Symbol Function Direction

1VCCPower Supply Input
2 XTAL2 Crystal, Oscillator Clock Output
3 XTAL1 Crystal, Oscillator Clock Input
4 P37 Port 3 pin 7 Output
5 P30 Port 3 pin 0 Input

6 /RESET Reset Input
7 R//W Read/Write Output
8 /DS Data Strobe Output
9 /AS Address Strobe Output
10 P35 Port 3 pin 5 Output

Pin # Symbol Function Direction

11 GND Ground, GND Input
12 P32 Port 3 pin 2 Input
13-20 P00-P07 Port 0 pin 0,1,2,3,4,5,6,7 In/Output
21-28 P10-P17 Port 1 pin 0,1,2,3,4,5,6,7 In/Output
29 P34 Port 3 pin 4 Output

30 P33 Port 3 pin 3 Input
31-38 P20-P27 Port 2 pin 0,1,2,3,4,5,6,7 In/Output
39 P31 Port 3 pin 1 Input
40 P36 Port 3 pin 6 Output

1
2

9

3
4
5
6
7
8

40
39
38
37
36
35
34
33
32

P36
P31

P21

P27
P26
P25
P24
P23
P22

VCC

XTAL2

P37
P30

/RESET

R//W

/DS

31
30
29
28
2714

10
11
12
13

XTAL1

GND

P32
P00
P01

P20
P33
P34
P17
P16

Z86E21

DIP

15

26
25
24
23
22
21

20

16
17
18
19

/AS
P35

P02
P03

P06
P07

P05

P04 P13

P15
P14

P12
P11
P10

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PIN DESCRIPTION (Continued)
Standard Mode

N/C

P30

P37

XTAL1

XTAL2

VCC

P36

P31

P27

P26

P25

P03

P04

P05

P06

P07

P10

P11

P12

P13

P14

N/C

N/C
P24
P23
P22
P21
P20
P33
P34
P17
P16
P15

/RESET

R//W

/DS

/AS

P35

GND

P32
P00
P01
P02

R//RL

7
8

9
10
11
12
13
14
15
16
17

38
37
36
35
34
33
32
31
30
29

39

Z86E21

PLCC

6543214443424140

18 19 20 21 22 23 24 25 26 27 28

Pin # Symbol Function Direction

14-16 P00-P02 Port 0 pin 0,1,2 In/Output
17 R//RL ROM/ROMless control Input
18-22 P03-P07 Port 0 pin 3,4,5,6,7 In/Output
23-27 P10-P14 Port 1 pin 0,1,2,3,4 In/Output

28 N/C Not Connected Input
29-31 P15-P17 Port 1 pin 5,6,7 In/Output
32 P34 Port 3 pin 4 Output
33 P33 Port 3 pin 3 Input

34-38 P20-P24 Port 2 pin 0,1,2,3,4 In/Output
39 N/C Not Connected Input
40-42 P25-P27 Port 2 pin 5,6,7 In/Output
43 P31 Port 3 pin 1 Input
44 P36 Port 3 pin 6 Output

Pin # Symbol Function Direction

1VCCPower Supply Input
2 XTAL2 Crystal, Oscillator Clock Output
3 XTAL1 Crystal, Oscillator Clock Input
4 P37 Port 3 pin 7 Output

5 P30 Port 3 pin 0 Input
6 N/C Not Connected Input
7 /RESET Reset Input
8 R//W Read/Write Output

9 /DS Data Strobe Output
10 /AS Address Strobe Output
11 P35 Port 3 pin 5 Output
12 GND Ground, GND Input
13 P32 Port 3 pin 2 Input

44-Lead PLCC Pin Assignments

44-Lead PLCC Pin Identification