Data Sheet

www.waveshare.com
14／25
[在此处键入]
Pin Name
Data/Command Interface
Control Signal
Bus interface
D1
D0
CS#
D/C#
RES#
SPI4
SDin
SCLK
CS#
D/C#
RES#
SPI3
SDin
SCLK
CS#
L
RES#
- Vcom is recommended to be set in the range of assigned value ± 0.1V.
Note 7-1: The Typical power consumption
7-3) Panel AC Characteristics
7-3-1) Oscillator frequency
The following specifications apply for : VSS = 0V, VCI = 3.0V, T
A
= 25℃
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Internal Oscillator frequency
Fosc
VCI=2.4 to 3.7V
0.95
1
1.05
MHz
7-3-2) MCU Interface
7-3-2-1) 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 BS1 pins. When it is “Low”, 4-wire SPI is selected. When it is
“High”, 3-wire SPI (9 bits SPI) is selected.
Table 7-1: MCU interface assignment under different bus interface mode
Note 7-2: L is connected to VSS
Note 7-3: H is connected to VCI
7-3-2-2) MCU Serial Interface (4-wire SPI)
The 4-wire SPI consists of serial clock SCLK, serial data SDIN, D/C#, CS#. In SPI mode, D0 acts as SCLK, D1
acts as SDIN.
Function
CS#
D/C#
SCLK
Write Command
L
L
↑
Write data
L
H
↑
Table 7-2: Control pins of 4-wire Serial Peripheral interface
Note 7-4: ↑stands for rising edge of signal