[4]?
?
Pin?Description?and?Wiring?Diagram?
Pin?No.?
Symbol?
External?
Connection?
Function?Description
1‐4?
DB7‐DB4?
MPU?
Four?high?order?bi‐directional?three‐state?data?bus?lines.?
5‐8?
DB3‐DB0?
MPU?
Four?low?order?bi‐directional?three‐state?data?bus?lines.?These?four?
are?not?used?during?4‐bit?operation.?
9?
E1?
MPU?
Operation?enable?signal.?Falling?edge?triggered?for?top?2?lines.?
10?
R/W?
MPU?
Read/Write?select?signal,?R/W=1:?Read?R/W:=0:?Write?
11?
RS?
MPU?
Register?select?signal.?RS=0:?Command,?RS=1:?Data?
12?
V0?
Power?Supply?
Power?supply?for?contrast?(approx.
0.5V)
13?
Vss?
Power?Supply?
Ground
14?
VDD?
Power?Supply?
Supply?voltage?for?logic?(+5.0V)
15?
E2?
MPU?
Operation?enable?signal.?Falling?edge?triggered?for?bottom?2?lines.
16?
NC?‐No?Connect
17?
LED+?
Power?Supply?
Power?supply?for?LED?backlight?(+3.5V)
18?
LED‐?
Power?Supply?
Ground?for?backlight
?
Recommended?LCD?connector:?2.54mm?pitch?pins?
Backlight?connector:??‐‐‐??????????Mates?with:???‐‐‐?
?
?
?
?
?