Z86E30/E31/E40
Z8 4K OTP Microcontroller
Zilog
Table 8. 28-Pin EPROM
Pin Identification*
Pin #
Symbol Function
Direction
1
1-3
4-7
8
D5-D7
A4-A7
Data 5,6,7
In/Output
Input
Address 4,5,6,7
Power Supply
4
26
25
1
V
CC
5
XXAX5
XXAX6
XXAX7
VXCXCX
XNXCX
X/CXEX
X/OXEX
DXX1X
DXX0X
AX3XX
VXSXSX
AX2XX
AX1XX
AX0XX
9
NC
No connection
Chip Select
10
11
12
/CE
/OE
EPM
Input
Input
Input
Output Enable
28-Pin PLCC
EPROM Prog.
Mode
13
V
Prog. Voltage
Input
PP
11
19
18
12
14-15 A8-A9
Address 8,9
Address 11
Address 10
Prog. Mode
Address 0,1,2
Ground
Input
Input
Input
Input
Input
16
17
18
A11
A10
/PGM
19-21 A0-A2
Figure 12. EPROM Programming Mode
28-Pin PLCC Pin Configuration
22
23
V
SS
A3
Address 3
Input
24-28 D0-D4
Data 0,1,2,3,4
In/Output
Notes:
*Pin Identification and Configuration identical on DIP and
Cerdip Window Lid style packages.
DS97Z8X0500
P R E L I M I N A R Y
11
ZILOG [ ZILOG, INC. ]
