COG LCD Display Module 16×2, ST7032Ai

Model No. WO1602M

COG LCD 16×2
Character LCD
5 x 8 dots includes cursor
IC: ST7032Ai
3V power supply
1/16 duty cycle
Interface: I2C

Category: COG LCD

Description

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.

Drawing

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℃ Ta=25℃ Ta=70℃	－ 4.3 －	－ 4.5 －	－ 4.7 －	V V V
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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