4.Absolute maximum ratings
Item
Symbol
Standard
Unit
Power voltage VDD-VSS
0-7.0
V
Input voltage VIN VSS - VDD
Operating temperature range VOP -20 - +70
Storage temperature range VST -30 - +80
5.Block diagram
6.Interface pin description
Pin no.
Symbol
External
connection
Function
1
VSS
Signal ground for LCM (GND)
2
VDD
Power supply for logic (+5V) for LCM
3
V0
Power supply
Contrast adjust
4 RS MPU Register select signal
5 R/W MPU Read/write select signal
6 E MPU Operation (data read/write) enable signal
7~10 DB0~DB3 MPU
Four low order bi-directional three-state data bus lines.
Used for data transfer between the MPU and the LCM.
These four are not used during 4-bit operation.
11~14 DB4~DB7 MPU
Four high order bi-directional three-state data bus lines.
Used for data transfer between the MPU
15 LED+ Power supply for LED backlight(+4.2V)Power supply
Power supply for LED backlight(0V)
16 LED-
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