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Z86E21 Datasheet(PDF) 4 Page - Zilog, Inc.

Part # Z86E21
Description  CMOS Z8 OTP MICROCONTROLLER
PDF  12 Pages
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Manufacturer  ZILOG [Zilog, Inc.]
Direct Link  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

Z86E21 Datasheet(HTML) 4 Page - Zilog, Inc.

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PIN DESCRIPTION (Continued)
Standard Mode
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
6
5432
1
44 43 42 41 40
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
1V
CC
Power 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



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