Specifications
Description
Model Name
Date
7.5” E-PAPER DISPLAY
7.5inch e-Paper V2
2019/06/28
Revision
2.0
10F, International Science & Technology Building, Fuhong Rd, Futian District,
Shenzhen, China
Email:
(order/shipment):sales@waveshare.com
(tech support) :service@waveshare.com
Website: www.waveshare.com
Table of Contents
1. General Description....................................................
1.1 Overview............................................................
1.2 Feature ..............................................................
1.3 Mechanical Specification........................................
1.4 Mechanical Drawing of EPD module .......................
1.5 Input/Output Terminals........................................
1.6 Reference Circuit ................................................
2. Environmental............................................................
2.1 Handling, Safety and Environmental Requirements...
2.2 Reliability test.....................................................
3. Electrical Characteristics .............................................
3.1 Absolute maximum rating.....................................
3.2 Panel DC Characteristics.......................................
3.3 Panel AC Characteristics........................................
4. Typical Operating Sequence.........................................
4.1 Normal Operation Flow.........................................
4.2 Reference Program Code......................................
5. Command Table.........................................................
6. Optical characteristics.................................................
6.1 Specifications ....................................................
6.2 Definition of contrast ratio...................................
6.3 Reflection Ratio..................................................
6.4 Bi-stability ........................................................
7. Point and line standard...............................................
8. Packing.....................................................................
9. Precautions ................................................................
4
4
4
4
5
6
8
9
9
10
12
12
12
13
18
18
20
22
48
48
48
49
49
50
51
52
7.5inch e-Paper V22/52
Revision History
Rev.
1.0
Issued Date
May.02.2018
1. Preliminary
2.0
Jun.28.2019
1. Updating
Revised Contents
7.5inch e-Paper V23/52
1. General Description
1.1 Over View
The display is a TFT active matrix electrophoretic display, with interface and a reference
system design. The 7.5” active area contains 800×480 pixels, and has 1-bit white/black
full display capabilities. An integrated circuit contains gate buffer, source buffer, interface,
timing control logic, oscillator, DC-DC, SRAM, LUT, VCOM, and border are supplied with
each panel.
1.2 Features
• High contrast
• High reflectance
• Ultra wide viewing angle
• Ultra low power consumption
• Pure reflective mode
• Bi-stable
• Commercial temperature range
• Landscape, portrait mode
• Antiglare hard-coated front-surface
• Low current deep sleep mode
• On chip display RAM
• Waveform stored in On-chip OTP
• Serial peripheral interface available
• On-chip oscillator
• On-chip booster and regulator control for generating VCOM, Gate and source driving
voltage
• I2C Signal Master Interface to read external temperature sensor
• Available in COG package IC thickness 300um
1.3 Mechanical Specifications
Parameter
Screen Size
Display Resolution
Active Area
Pixel Pitch
Pixel Configuration
Outline Dimension
Weight
Specifications
7.5
800(H)×480(V)
163.2(H)×97.92(V)
0.205×0.204
Square
170.2 (H)×111.2(V) ×1.18(D)
44±0.5
Unit
Inch
Pixel
mm
mm
mm
g
Remark
Dpi: 125
7.5inch e-Paper V24/52
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1.4 Mechanical Drawing of EPD module
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104,09±0,2 FPL
107,09±0,2 PS
111,2±0,2 Outline
7.5inch e-Paper V25/52
1.5 Input/Output Terminals
1.5-1 Pin out List
Pin # Type Single
Description
Remark
NC
No connection and do not connect with other NC pins Keep Open
GDR
RESE
This pin is N-MOS gate control
Current sense input for control loop
NC
No connection and do not connect with other NC pins Keep Open
VSHR
TSCL
I/O TSDA
Positive source voltage for Red
I2C clock for external temperature sensor
I2C data for external temperature sensor
I
BS
Input interface setting. Select 3 wire/ 4 wire SPI interface Note 1.5-5
O BUSY_N
This pin indicates the driver status
RST_N
Global reset pin. Low reset
Note 1.5-4
Note 1.5-3
DC
CSB
SCL
Serial communication Command/Data input
Note 1.5-2
Serial communication chip select
Note 1.5-1
Serial communication clock input
O
P
P
O
1
2
3
4
5
6
7
8
9
10
11
12
13
I
I
I
I
14
I/O
SDA
Serial communication data input
15
16
17
18
19
20
21
22
23
24
P VDDIO
P
VDD
P
VSS
P VDD_18
V
P
P
P
P
P
VOTP
VSH
VGH
VSL
VGL
IO voltage supply
Digital/Analog power
Digital ground
1.8V voltage input &output
OTP program power (7.5V)
Positive source voltage
Positive gate voltage
Negative source voltage
Negative gate voltage
O
VCOM
VCOM output
7.5inch e-Paper V26/52
Note 1.5-1: This pin (CSB) is the chip select input connecting to the MCU. The chip is enabled for
MCU communication only when CSB is pulled Low.
Note 1.5-2: This pin (DC) is Data/Command control pin connecting to the MCU. When the pin is
pulled HIGH, the data will be interpreted as data. When the pin is pulled Low, the data
will be interpreted as command.
Note 1.5-3: This pin (RST_N) is reset signal input. The Reset is active Low.
Note 1.5-4: This pin (BUSY_N) is BUSY_N state output pin. When BUSY_N is low, the operation of
chip should not be interrupted and any commands should not be issued to the module.
The driver IC will put BUSY_N pin low when the driver IC is working such as:
- Outputting display waveform; or
- Programming with OTP
- Communicating with digital temperature sensor
Note 1.5-5: This pin (BS) is for 3-line SPI or 4-line SPI selection. When it is “Low”, 4-line SPI is
selected. When it is “High”, 3-line SPI (9 bits SPI) is selected. Please refer to below
Table.
Table: Bus interface selection
MPU Interface
4-lines serial peripheral interface (SPI)
3-lines serial peripheral interface (SPI) – 9 bits SPI
BS
L
H
7.5inch e-Paper V27/52
1.6 Reference Circuit
Note:
1. Inductor L1 is wire-wound inductor. There are no special requirements
for other parameters.
2. Suggests using Si1304BDL or Si1308EDL TUBE MOS (Q1) , otherwise it
may affect the normal boost of the circuit.
3. The default circuit is 4-wire SPI. If the user wants to use 3-wire SPI.
4. Default voltage value of all capacitors is 50V.
7.5inch e-Paper V28/52