Home Products COG LCD WO1602M

COG LCD Display Module 16x2, ST7032Ai

Model No. WO1602M

►COG LCD 16x2
►Character LCD
►5 x 8 dots includes cursor
►IC: ST7032Ai
►3V power supply
►1/16 duty cycle
►Interface: I2C


The WO1602M is a monochrome COG (Chip-On-Glass) LCD display module that features a 16 characters x 2 lines configuration. This module is designed with an outline dimension of 51.2 x 20.7 mm and a viewing area (VA) size of 40.0 x 10.0 mm. The compact size makes it suitable for various applications where space is a consideration.

One of the key components of this display module is the ST7032Ai driver, which is integrated for efficient control and operation. The communication interface for this module is I2C, offering ease of integration with other devices or microcontrollers.

The operational temperature range of the WO1602M is between -20℃ and +70℃, making it suitable for diverse environmental conditions. Additionally, it can be stored within a temperature range of -30℃ to +80℃. The logic supply voltage for the WO1602M ranges from 2.9V to 3.1V, with a typical value of 3V. This voltage range ensures reliable and stable performance during operation.

It's worth noting that the WO1602M serves as an alternative model for the WO1602I, particularly in situations where there may be IC shortages or longer lead times for the original model.


COG LCD Display Module 16x2, ST7032Ai - WO1602M

Data source ref: WO1602M-TFH-AT#


Interface Pin Function

Pin No. Symbol Description
1 VG VG is the LCD driving voltage for segment circuits.
VGO is the output of VG regulator. VGS is the feedback of VG regulator.
VGI is the VG input of segment circuits.
1.6 ≤ VG < VDD2.
2 XV0 XV0 is the LCD driving voltage for common circuits at positive frame.
XV0OUT is the output of XV0 regulator. XV0S is the feedback of XV0 regulator.
XV0I is the V0 input of common circuits.
3 V0 V0 is the LCD driving voltage for common circuits at negative frame.
V0OUT is the output of V0 regulator. V0S is the feedback of V0 regulator.
V0I is the V0 input of common circuits.
Be sure that: V0 ≥ VG > VM > VSS ≥ XV0 (under operation).
4 VDD Power supply input.
5 VSS Ground
6 SDA Serial data input
7 SCL Serial clock input
8 RST Hardware reset input pin. When RSTB is “L”, internal initialization is executed and the internal registers will be initialized.

Mechanical Data

Item Dimension Unit
Number of Characters 16 characters x 2 Lines
Module dimension 51.2 x 20.7 x 6.3 mm
View area 40.0 x 10.0 mm
Active area 38.0 x 7.98 mm
Dot size 0.36 x 0.43 mm
Dot pitch 0.41 x 0.48 mm
Character size 2.00 x 3.79 mm
Character pitch 2.40 x 4.19 mm
Duty 1/16 , 1/5 Bias
Backlight Type LED
IC ST7032Ai
Interface I2C

Absolute Maximum Ratings

Item Symbol Min Typ Max Unit
Operating Temperature TOP -20 +70
Storage Temperature TST -30 +80
Input Voltage VIN -0.3 VDD+0.3 V
Power Supply Voltage VDD-VSS -0.3 +4.0 V
LCD Driver Voltage VLCD -0.3 7.0 V

Electrical Characteristics

Item Symbol Condition Min Typ Max Unit
Supply Voltage For Logic VDD-VSS 2.9 3.0 3.1 V
Supply Voltage For LCD VOP Ta=-20℃



Input High Volt. VIH 0.7 VDD VDD V
Input Low Volt. VIL VSS 0.3VDD V
Supply Current (LED backlight is not included) IDD 0.16 1.0 mA

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