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Z86E21 Datasheet(PDF) 5 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) 5 Page - Zilog, Inc.

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44
21
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17
16
15
14
13
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22
33 32 31 30 29 28 27 26 25 24 23
12345678910
11
/RESET
R//W
/DS
/AS
P35
GND
P32
P00
P01
P02
R//RL
GND
P24
P23
P22
P21
P20
P33
P34
P17
P16
P15
Z86E21
QFP
44-Lead QFP Pin Identification
Pin #
Symbol
Function
Direction
1-5
P03-P07
Port 0 pin 3,4,5,6,7
In/Output
6
GND
Ground, GND
Input
7-14
P10-P17
Port 1 pin 0,1,2,3,4,5,6,7
In/Output
15
P34
Port 3 pin 4
Output
16
P33
Port 3 pin 3
Input
17-21
P20-P24
Port 2 pin 0,1,2,3,4
In/Output
22
GND
Ground, GND
Input
23-25
P25-P27
Port 2 pin 5,6,7
In/Output
26
P31
Port 3 pin 1
Input
27
P36
Port 3 pin 6
Output
28
GND
Ground, GND
Input
29
V
CC
Power Supply
Input
30
XTAL2
Crystal, Oscillator Clock
Output
Pin #
Symbol
Function
Direction
31
XTAL1
Crystal, Oscillator Clock
Input
32
P37
Port 3 pin 7
Output
33
P30
Port 3 pin 0
Input
34
/RESET
Reset
Input
35
R//W
Read/Write
Output
36
/DS
Data Strobe
Output
37
/AS
Address Strobe
Output
38
P35
Port 3 pin 5
Output
39
GND
Ground, GND
Input
40
P32
Port 3 pin 2
Input
41-43
P00-P02
Port 0 pin 0,1,2
In/Output
44
R//RL
ROM/ROMless control
Input
44-Lead QFP Pin Assignments



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