Waveshare 7.3inch e-Paper (E) - Page 17

7.3inch e-Paper (E)
User Manual
14
7.3 PANEL AC CHARACTERISTICS
7.3.1 MCU INTERFACE
7-3-1-1 MCU INTERFACE SELECTION
In this module, there are 4-wire SPI and 3-wire SPI that can communicate with MCU. The MCU
interface mode can be set by hardware selection on BS0 pins. When it is “High”, 4-wire SPI is
selected. When it is “Low”, 3-wire SPI (9 bits SPI) is selected.
Pin Name
Data/Command Interface
Control Signal
Bus interface
SDA
SCL
CS#
D/C#
RES#
SPI4
SDIN
SCLK
CS#
D/C#
RES#
SPI3
SDIN
SCLK
CS#
L
RES#
Table 7-1: MCU interface assignment under different bus interface mode
Note 7-3: Lis connected to GND.
Note 7-4: H is connected to VDD.