ST7920 LCD 122x32 COB gLCD 1.86-inch - RG12232C3 - Raystar

ST7920 LCD Graphic LCD Module COB 1.86-inch

Model No. RG12232C3

The RG12232C3 is a 122×32 graphic COB LCD module with the ST7920 LCD IC. Part of the RG12232C/C1/C2 series (white backlight is not available), it shares the same module size for easy interchangeability. An additional PCB is included, helping users save development time by eliminating the need for custom PCB design.

The RG12232C3 ST7920 LCD utilizes the ST7920 IC, supporting both 6800 parallel and SPI interfaces. This ST7920 display delivers reliable graphic performance with built-in Chinese font support, making it a strong choice for multilingual applications. As a compact ST7920 gLCD, it is engineered with a wide operating temperature range (-20°C to +70°C) and low power consumption, ensuring consistent performance in industrial instruments, control panels, and portable devices.

If you need technical support or product quotes for the RG12232C3 or other ST7920 LCD modules, please feel free to contact our sales team!

RG12232C: SBN1661G IC ; 6800 interface
RG12232C1: SBN1661G IC ; 6800 interface; FFC
RG12232C2: SBN1661G IC ; 6800 interface: Pin pitch 2.0 mm

Data Source ref:RG12232C3-FHW-VBA

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General Specs
Interface Pin Function
Contour Drawing
Absolute Maximum Ratings
Electrical Characteristics

Item	Dimension	Unit
Structure	COB
Size (Diagonal)	1.86	inch
Dot Matrix / Resolution	122×32	dots
Module Dimension	59.0 × 29.3 × 5.5 (MAX)	mm
Viewing Area	52.0 × 15.0	mm
Active Area	45.72 × 11.97	mm
Dot / Pixel Size	0.345 × 0.345	mm
Dot / Pixel Pitch	0.375 × 0.375	mm
Backlight Type	White LED Backlight not Available
IC	ST7920
Interface	6800,SPI
Power Supply	Internal Boost Optional for 3V Power supply
Duty	1/32 duty cycle
Chinese Version	Yes
Type	Graphics LCD Display
Feature	Same Size with RG12232C

ST7920 gLCD Interface Options

Pin No.	Symbol	Level	Description
1	— VLED	0V	B/L Selected
2	Vss	0V	Ground
3	Vdd	5.0V	Power supply for logic
4	Vo	(Variable)	Operating voltage for LCD
5	RS	H/L	H: Data , L : Instruction
6	E	H/L	ENABLE SIGNAL
7	VOUT	—	Positive Voltage Output
8	DB0	H/L	Data bus line
9	DB1	H/L	Data bus line
10	DB2	H/L	Data bus line
11	DB3	H/L	Data bus line
12	DB4	H/L	Data bus line
13	DB5	H/L	Data bus line
14	DB6	H/L	Data bus line
15	DB7	H/L	Data bus line
16	R/W	H/L	H : Read ; L : Write

Outline Dimension of Display ST7920 Module

ST7920 LCD 122x32 COB gLCD 1.86-inch - RG12232C3 Contour Drawing - Raystar

Operation Limits of ST7920 Display

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
Supply Voltage For Logic	VDD-VSS	-0.3	－	5.5	V
LCD Driver Voltage	VLCD	-0.3	－	7.0	V

Reliable Graphic LCD with ST7920 IC

Item	Symbol	Condition	Min	Typ	Max	Unit
Supply Voltage For Logic	VDD-VSS	－	4.5	5.0	5.5	V
Supply Voltage For LCD	V0-VSS	Ta=-20℃ Ta=25℃ Ta=+70℃	－ 4.2 －	－ 4.35 －	－ 4.5 －	V V V
Input High Volt	VIH	VDD =5.0	3.0	5.0	VDD+0.5	V
Input Low Volt	VIL	－	0	0.7	1.1	V
Output High Volt	VOH	－	VDD-0.3	－	VDD	V
Output Low Volt	VOL	－	0	－	0.3	V
Supply Current	IDD	VDD=5.0V	0.8	1.0	1.5	mA