Gasboy CFN Series Diagnostic Manual User Manual
Page 404
CFN Islander
13-36
12/26/02
Connectors
P1 – Island card reader CPU PCB Interface
Pinout
Pin
Function
Voltage
1-4,26
N/C
5
R/W – Read/Write select
+5 VDC – Read, 0 VDC - Write
6
DC ground
DC ground
7
RS – Register select
0 VDC – Bus contains instruction
+5 VDC – Bus contains character to display
8
DC ground
DC ground
9
E - Enable
Neg. transition latches data into LCD
10
DC ground
DC ground
11
D0 – Data 0
+5 VDC - On
12
DC ground
DC ground
13
D1 – Data 1
+5 VDC - On
14
DC ground
DC ground
15
D2 – Data 2
+5 VDC - On
16
DC ground
DC ground
17
D3 – Data 3
+5 VDC - On
18
DC ground
DC ground
19
D4 – Data 4
+5 VDC - On
20
DC ground
DC ground
21
D5 – Data 5
+5 VDC - On
22
+5 VDC
+5 VDC
23
D6 – Data 6
+5 VDC - On
24
+5 VDC
+5 VDC
25
D7 – Data 7
+5 VDC - On
P2 - Display Interface
Pinout
Pin
Function
Voltage
1
DC ground
DC ground
2
+5 VDC
+5 VDC
3
Not connected
NC-not used
4
RS - Register select
0 VDC – Bus contains instruction
+5 VDC – Bus contains character to display
5
R/W-Read/Write select
+5 VDC –Read, 0 VDC-Write
6
E-Enable
Neg. transition latches data into LCD
7
D0-Data 0
+5 VDC - On
8
D1-Data 1
+5 VDC - On
9
D2-Data 2
+5 VDC - On
10
D3-Data3
+5 VDC - On
11
D4-Data 4
+5 VDC - On
12
D5-Data 5
+5 VDC - On
13
D6-Data 6
+5 VDC - On
14
D7-Data 7
+5 VDC - On
P3 – Backlight Power – Islander displays are not equipped with backlighting
Pinout
Pin
Function
Voltage
1
DC ground
DC ground
2
N/C
3
LED Power
+4 VDC