4.2-inch e-Paper Display Module (EPD) - RAA0420A2AAB5NXXX000 - Raystar

4.2-inch e-Paper Display Module (EPD) 400x300 SPI Front Light

Model No. RAA0420A2AAB5NXXX000

The RAA0420A2AAB5NXXX000 is a 4.2-inch e-paper display with 400×300 dots, also categorized as a 4.2-inch e-paper display for low-power applications. This 4.2-inch e-paper module supports front light integration to ensure clear readability in low-light environments. With wide viewing angles and the ability to maintain images without continuous power, this e-paper solution is well-suited for long-duration display usage.

This 4.2-inch e-paper display is ideal for portable electronic devices such as electronic shelf label (ESL) systems and other low-power scenarios. The e-paper display incorporates essential driver circuits and supports dual orientation modes, enabling flexible system design. As a 4.2-inch e-paper module, it provides stable performance for embedded and battery-powered applications.

Interested in integrating the 4.2-inch e-paper display into your project? Contact our sales team for technical support and inquiries.

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General Specifications
Interface Pin Function
Contour Drawing
Electrical Characteristics

Item	Dimension	Unit
Size (Diagonal)	4.2	inch
Dot Matrix / Resolution	400 (H) × 300 (V)	dots
Outline Dimension	91 (H) × 77 (V) × 2.02 (D)	mm
Active Area	84.8 × 63.6	mm
Pixel Arrangement (Pixel Configuration)	Rectangle
Interface	SPI
Touch Panel	Without Touch Panel
Operating Temperature	0~+50	°C
Storage Temperature	-25~+70	°C

Input/Output Pin Assignment for 4.2-inch e-Paper Display Module

Pin No.	Symbol	I/O	Description	Remark
1	NC	NC	Do not connect with other NC pins	Keep Open
2	GDR	O	N-Channel MOSFET Gate Drive Control
3	RESE	I	Current Sense Input for the Control Loop
4	NC	NC	Do not connect with other NC pins	Keep Open
5	VSH2	C	Positive Source driving voltage(Red)
6	TSCL	O	I²C Interface to digital temperature sensor Clock pin
7	TSDA	I/O	I²C Interface to digital temperature sensor Data pin
8	BS1	I	Bus Interface selection pin
9	BUSY	O	Busy state output pin
10	RES#	I	Reset signal input. Active Low.
11	D/C#	I	Data / Command control pin
12	CS#	I	Chip select input pin
13	SCL	I	Serial Clock pin (SPI)
14	SDA	I/O	Serial Data pin (SPI)
15	VDDIO	P	Power Supply for interface logic pins. It should be connected with VCI
16	VCI	P	Power Supply for the chip
17	VSS	P	Ground
18	VDD	C	Core logic power pin. VDD can be regulated internally from VCI. A capacitor should be connected between VDD and VSS
19	VPP	P	FOR TEST
20	VSH1	C	Positive Source driving voltage
21	VGH	C	Power Supply pin for Positive Gate driving voltage and VSH1
22	VSL	C	Negative Source driving voltage
23	VGL	C	Power Supply pin for Negative Gate driving voltage VCOM and VSL
24	VCOM	C	VCOM driving voltage

4.2-inch e-Paper Display Mechanical Dimensions

4.2-inch e-Paper Display Module (EPD) - RAA0420A2AAB5NXXX000 Contour Drawing - Raystar

Absolute Maximum Rating

Parameter	Symbol	Rating	Unit
Logic Supply Voltage	VCI	-0.5 to +6.0	V
Logic Input Voltage	VIN	-0.5 to VCI +0.5	V
Logic Output Voltage	VOUT	-0.5 to VCI +0.5	V
Operating Temp Range	TOPR	0 to +50	°C
Storage Temp Range	TSTG	-25 to +70	°C
Optimal Storage Temp	TSTGo	23±2	°C
Optimal Storage Humidity	HSTGo	55±10	%RH