LCD Module Electrical and Timing Characteristics

Absolute Maximum Ratings
Item Symbol Test
Conditions		 Value Unit
min. max.
Supply Voltage for Logic Vcc-Vss Ta=25oC -0.3 7 V
Supply Voltage for LCD Drive Vcc-VEE Ta=25oC Vcc-13.5 Vcc+0.3 V
Input Voltage VI Ta=25oC -0.3 Vcc+0.3 V
Operating Temp. Topr --- 0 +50 oC
Storage Temp. Tstg --- -20 +70 oC

Electrical Characteristics
Item Symbol Test
Conditions		 Value Unit
min. typ. max.
Input "High" Voltage VIH --- 2.2 --- Vcc V
Input "Low" Voltage VIL --- 0 --- 0.6 V
Output "High" Voltage VOH IOH=-0.205mA 2.4 --- Vcc V
Output "Low" Voltage VOL IOL=1.2mA 0 --- 0.4 V
Supply Current Icc Vcc=5.0V --- 1.5 5.0 mA

LCD Contrast/Viewing Angle Control

The LCD module contrast and viewing angle is controlled by a single potentiometer connected to the module as shown in the following figure.

For extended-temperature LCD modules the potentiometer must be placed between GND and -7V instead of between GND and +5V.

Timing for WRITE operation

Timing for READ operation

Timing
Item Symbol Value Unit
min. max.
Enable Cycle Time tCYCE 1000 --- ns
Enable Pulse Width, High PWEH 450 --- ns
Enable Rise and Fall Time tEr,tEf --- 25 ns
Address Setup Time, RS, R/W-E tAS 140 --- ns
Data Delay Time tDDR --- 320 ns
Data Setup Time tDSW 195 --- ns
Data Hold Time (write) tH 10 --- ns
Data hold Time (read) tDHR 20 --- ns
Address Hold Time tAH 10 --- ns