PMAC-Lite Hardware Reference
Connector Pinouts
33
CONNECTOR PINOUTS
J1 (JDISP): Display Port Connector
J1 JDISP (14-Pin Connector)
Front View
Pin #
Symbol
Function
Description
Notes
1
VDD
Output
+5V Power
Power Supply Out
2 VSS
Common PMAC
Common
3
RS
Output
Read Strobe
TTL Signal Out
4
VEE
Output
Contrast Adjust VEE
0 to+5Vdc *
5
E
Output
Display Enable
High is Enable
6
R/W
Output
Read or Write
TTL Signal Out
7 DB1
Output
Display
Data1
8
DB0
Output
Display Data0
9 DB3
Output
Display
Data3
10 DB2
Output
Display
Data2
11 DB5
Output
Display
Data5
12 DB4
Output
Display
Data4
13 DB7
Output
Display
Data7
14
DB6
Output
Display Data6
The JDISP connector is used to drive the 2-line x 24-character (Acc-12), 2 x 40 (Acc-12A) LCD, or the 2
x 40 vacuum fluorescent (Acc 12C) display unit. The DISPLAY command may be used to send
messages and values to the display.
*
Note
; Controlled by potentiometer R1
See Also:
Program Commands: Display
Accessories; ACC-12, 12A, 12C, ACC16D
Memory Map: Y:$0780 - $07D1
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