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Z86C21 датащи(PDF) 5 Page - Zilog, Inc.

номер детали Z86C21
подробное описание детали  8K ROM Z8 CMOS MICROCONTROLLER
PDF  35 Pages
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производитель  ZILOG [Zilog, Inc.]
домашняя страница  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

Z86C21 датащи(HTML) 5 Page - Zilog, Inc.

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5
Z86C21 MCU
WITH
8K ROM
34
35
36
37
38
39
40
41
42
43
44
21
20
19
18
17
16
15
14
13
12
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
Z86C21
QFP
Table 3. 44-Pin QFP Pin Identification
Pin #
Symbol
Function
Direction
1-5
P03-P07
Port 0, Pins 3,4,5,6,7
In/Output
6
GND
Ground
Input
7-14
P10-P17
Port 1, Pins 0 through 7
In/Output
15
P34
Port 3, Pin 4
Output
16
P33
Port 3, Pin 3
Input
17-21
P20-P24
Port 2, Pins 0,1,2,3,4
In/Output
22
GND
Ground
Input
23-25
P25-P27
Port 2, Pins 5,6,7
In/Output
26
P31
Port 3, Pin 1
Input
27
P36
Port 3, Pin 6
Output
28
GND
Ground
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
Input
40
P32
Port 3, Pin 2
Input
41-43
P00-P02
Port 0, Pins 0,1,2
In/Output
44
R//RL
ROM/ROMless control
Input
Figure 4. 44-Pin QFP Pin Assignments



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