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Z86C21 Arkusz danych(PDF) 4 Page - Zilog, Inc.

Numer części Z86C21
Szczegółowy opis  8K ROM Z8 CMOS MICROCONTROLLER
PDF  35 Pages
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Producent  ZILOG [Zilog, Inc.]
Strona internetowa  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

Z86C21 Arkusz danych(HTML) 4 Page - Zilog, Inc.

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Z86C21 MCU
WITH
8K ROM
PIN DESCRIPTION (Continued)
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
Z86C21
PLCC
6
5432
1
44 43 42 41 40
18 19 20 21 22 23 24 25 26 27 28
Table 2. 44-Pin PLCC Pin Identification
Pin #
Symbol
Function
Direction
14-16
P00-P02
Port 0, Pins 0,1,2
In/Output
17
R//RL
ROM/ROMless control
Input
18-22
P03-P07
Port 0, Pins 3,4,5,6,7
In/Output
23-27
P10-P14
Port 1, Pins 0,1,2,3,4
In/Output
28
N/C
Not Connected
Input
29-31
P15-P17
Port 1, Pins 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, Pins 0,1,2,3,4
In/Output
39
N/C
Not Connected
Input
40-42
P25-P27
Port 2, Pins 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
Input
13
P32
Port 3, Pin 2
Input
Figure 3. 44-Pin PLCC Pin Assignments



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