z86e21 ZiLOG Semiconductor, z86e21 Datasheet - Page 3

• Manufacturer Part Number: z86e21
• Description: Cmos Z8 Otp Microcontroller
• Manufacturer: ZiLOG Semiconductor

PIN DESCRIPTION
Standard Mode
Pin #
1
2
3
4
5
6
7
8
9
10
Symbol
V
XTAL2
XTAL1
P37
P30
/RESET
R//W
/DS
/AS
P35
CC
Function
Power Supply
Crystal, Oscillator Clock Output
Crystal, Oscillator Clock Input
Port 3 pin 7
Port 3 pin 0
Reset
Read/Write
Data Strobe
Address Strobe
Port 3 pin 5
/RESET
XTAL2
XTAL1
R//W
GND
VCC
40-Lead DIP Pin Assignments
40-Lead DIP Pin Identification
P35
P04
P37
P30
P32
P00
P01
P02
P03
P05
P06
P07
/DS
/AS
Direction
Input
Output
Input
Input
Output
Output
Output
Output
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Z86E21
DIP
Pin #
11
12
13-20 P00-P07
21-28 P10-P17
29
30
31-38 P20-P27
39
40
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
Symbol
GND
P32
P34
P33
P31
P36
P36
P31
P27
P26
P25
P24
P23
P22
P21
P20
P33
P34
P17
P16
P15
P14
P13
P12
P11
P10
Function
Ground, GND
Port 3 pin 2
Port 0 pin 0,1,2,3,4,5,6,7 In/Output
Port 1 pin 0,1,2,3,4,5,6,7 In/Output
Port 3 pin 4
Port 3 pin 3
Port 2 pin 0,1,2,3,4,5,6,7 In/Output
Port 3 pin 1
Port 3 pin 6
Direction
Input
Input
Output
Input
Input
Output
3