Input/Output Pin Assignment - Waveshare 4.2inch e-Paper V2 User Manual

5. INPUT/OUTPUT PIN ASSIGNMENT

I = Input Pin, O = Output Pin, I/O = Bidirectional Pin (Input/output), P = Power Pin, C = Capacitor Pin.
NO. Name
1 NC
2 GDR
3 RESE
4 NC
5 VSH2
6 TSCL
7 TSDA
8 BS1
9 BUSY
10 RES#
11 D/C#
12 CS#
13 SCL
14 SDA
15 VDDIO
16 VCI
17 VSS
18 VDD
19 VPP
20 VSH1
21 VGH
22 VSL
23 VGL
24 VCOM
Note 5-1: This pin (CS#) is the chip select input connecting to the MCU. The chip is enabled for MCU
communication only when CS# is pulled LOW.
Note 5-2: This pin is (D/C#) Data/Command control pin connecting to the MCU in 4-wire SPI mode.
When the pin is pulled HIGH, the data at SDA will be interpreted as data. When the pin is
pulled LOW, the data at SDA will be interpreted as command.
I/O
Do not connect with other NPC pins
O N-Channel MOSFET Gate Drive Control
I Current Sense Input for the Control Loop
NC Do not connect with other NC pins
C Positive Source driving voltage (Red)
O I 2 C Interface to digital temperature sensor Clock pin
I/O I C Interface to digital temperature sensor Data pin
2
I Bus Interface selection pin
O Busy state output pin
I Reset signal input, Active Low
I Data/Command control pin
I Chip select output pin
I Serial Clock pin (SPI)
I/O Serial Data pin (SPI)
Power supply for interface logic pins.
P
It should be connected with VCI.
P Power supply for the chip
P Ground
Core logic power pin VDD can be regulated internally from
C
VCI. A capacitor should be connected between VDD and VSS.
P FOR TEST
C Positive Source driving voltage
C Power Supply pin for Positive Gate driving voltage and VSH1
C Negative Source driving voltage
Power Supply pin for Negative Gate driving voltage VCOM
C
and VSL
C VCOM driving voltage
Description
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4.2inch e-Paper V2
User Manual
Remark
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Note 5-5
Note 5-4
Note 5-3
Note 5-2
Note 5-1