[4]?
?
Pin?Description?and?Wiring?Diagram?
Pin?No.?
Symbol?
External?
Connection?
Function?Description
1?
VSS?
Power?Supply?
Ground
2?
VDD?
Power?Supply?
Power?supply?for?Logic?(+5.0V)
3?
V0?
Adj?Power?Supply?
Power?Supply?for?contrast?(approx.
‐3.7V)
4?
RS?
MPU?
Register?select:?1=Data,?0=Instruction
5?
R/W?
MPU?
Read/Write?select?signal,?R/W=1:?Read??R/W:?=0:?Write?
6?
E?
MPU?
Operation?enable?signal.??Falling?edge?triggered.
7‐14?
DB0‐DB7?
MPU?
This?is?an?8‐bit‐directional?data?bus
15?
CS1B?
MPU?
Chip?Selection:?CS1=H,?CS2=L?⒐
select?IC1?(left?side)?
????????????????????????????CS1=L,?CS2=H?⒐?select?IC2?(right?side)?
16?
CS2B?
MPU?
17?
/RES?
MPU?
Active?LOW?Reset?signal
18?
VEE?
Power?Supply?
Negative?voltage?output
(‐5.0V)
19?
LED+?
Power?Supply?
Power?for?LED?backlight?(+5.0V
via
on‐board?resistor)??
20?
LED‐?
Power?Supply?
Ground?for?Backlight
Recommended?LCD?connector:?2.54mm?pitch?pins?
Backlight?connector:?‐‐‐?
?
?
?
?
?
?
?