3
1.5 Pin Definition
Pin Number Symbol I/O Function
P
P
o
o
w
w
e
e
r
r
S
S
u
u
p
p
p
p
l
l
y
y
9 VDD P
P
P
o
o
w
w
e
e
r
r
S
S
u
u
p
p
p
p
l
l
y
y
f
f
o
o
r
r
L
L
o
o
g
g
i
i
c
c
This is a voltage supply pin. It must be connected to external source.
8 VSS P
G
G
r
r
o
o
u
u
n
n
d
d
o
o
f
f
L
L
o
o
g
g
i
i
c
c
C
C
i
i
r
r
c
c
u
u
i
i
t
t
This is a
g
round pin. It acts as a reference for the lo
g
ic pins. It must be
connected to external ground.
28 VCC P
P
P
o
o
w
w
e
e
r
r
S
S
u
u
p
p
p
p
l
l
y
y
f
f
o
o
r
r
O
O
E
E
L
L
P
P
a
a
n
n
e
e
l
l
This is the most positive voltage supply pin of the chip. A stabilization capacitor
should be connected between this pin and V
SS
when the converter is used. I
t
must be connected to external source when the converter is not used.
29 VLSS P
G
G
r
r
o
o
u
u
n
n
d
d
o
o
f
f
A
A
n
n
a
a
l
l
o
o
g
g
C
C
i
i
r
r
c
c
u
u
i
i
t
t
This is an analog ground pin. It should be connected to V
SS
externally.
D
D
r
r
i
i
v
v
e
e
r
r
26 IREF I
C
C
u
u
r
r
r
r
e
e
n
n
t
t
R
R
e
e
f
f
e
e
r
r
e
e
n
n
c
c
e
e
f
f
o
o
r
r
B
B
r
r
i
i
g
g
h
h
t
t
n
n
e
e
s
s
s
s
A
A
d
d
j
j
u
u
s
s
t
t
m
m
e
e
n
n
t
t
This pin is se
g
ment current reference pin. A resistor should be connected
between this pin and V
SS
. Set the current at 12.5μA maximum.
27 VCOMH O
V
V
o
o
l
l
t
t
a
a
g
g
e
e
O
O
u
u
t
t
p
p
u
u
t
t
H
H
i
i
g
g
h
h
L
L
e
e
v
v
e
e
l
l
f
f
o
o
r
r
C
C
O
O
M
M
S
S
i
i
g
g
n
n
a
a
l
l
This pin is the input pin for the volta
g
e output hi
g
h level for COM si
g
nals.
A
capacitor should be connected between this pin and V
SS
.
D
D
C
C
/
/
D
D
C
C
C
C
o
o
n
n
v
v
e
e
r
r
t
t
e
e
r
r
6 VDDB P
P
P
o
o
w
w
e
e
r
r
S
S
u
u
p
p
p
p
l
l
y
y
f
f
o
o
r
r
D
D
C
C
/
/
D
D
C
C
C
C
o
o
n
n
v
v
e
e
r
r
t
t
e
e
r
r
C
C
i
i
r
r
c
c
u
u
i
i
t
t
This is the power supply pin for the internal buffer of the DC/DC volta
g
e converter.
It must be connected to external source when the converter is used. It should be
connected to V
DD
when the converter is not used.
4 / 5
2 / 3
C1P / C1N
C2P / C2N
I
P
P
o
o
s
s
i
i
t
t
i
i
v
v
e
e
T
T
e
e
r
r
m
m
i
i
n
n
a
a
l
l
o
o
f
f
t
t
h
h
e
e
F
F
l
l
y
y
i
i
n
n
g
g
I
I
n
n
v
v
e
e
r
r
t
t
i
i
n
n
g
g
C
C
a
a
p
p
a
a
c
c
i
i
t
t
o
o
r
r
N
N
e
e
g
g
a
a
t
t
i
i
v
v
e
e
T
T
e
e
r
r
m
m
i
i
n
n
a
a
l
l
o
o
f
f
t
t
h
h
e
e
F
F
l
l
y
y
i
i
n
n
g
g
B
B
o
o
o
o
s
s
t
t
C
C
a
a
p
p
a
a
c
c
i
i
t
t
o
o
r
r
The charge-pump capacitors are required between the terminals. They must be
floated when the converter is not used.
I
I
n
n
t
t
e
e
r
r
f
f
a
a
c
c
e
e
10
11
12
BS0
BS1
BS2
I
C
C
o
o
m
m
m
m
u
u
n
n
i
i
c
c
a
a
t
t
i
i
n
n
g
g
P
P
r
r
o
o
t
t
o
o
c
c
o
o
l
l
S
S
e
e
l
l
e
e
c
c
t
t
These pins are MCU interface selection input. See the following table:
BS0 BS1 BS2
I
2
C 0 1 0
3-wire SPI 1 0 0
4-wire SPI 0 0 0
8-bit 68XX Parallel 0 0 1
8-bit 80XX Parallel 0 1 1
14 RES# I
P
P
o
o
w
w
e
e
r
r
R
R
e
e
s
s
e
e
t
t
f
f
o
o
r
r
C
C
o
o
n
n
t
t
r
r
o
o
l
l
l
l
e
e
r
r
a
a
n
n
d
d
D
D
r
r
i
i
v
v
e
e
r
r
This pin is reset signal input. When the pin is low, initialization of the chip is
executed. Keep this pin pull high during normal operation.
13 CS# I
C
C
h
h
i
i
p
p
S
S
e
e
l
l
e
e
c
c
t
t
This pin is the chip select input. The chip is enabled for MCU communication only
when CS# is pulled low.
15 D/C# I
D
D
a
a
t
t
a
a
/
/
C
C
o
o
m
m
m
m
a
a
n
n
d
d
C
C
o
o
n
n
t
t
r
r
o
o
l
l
This pin is Data/Command control pin. When the pin is pulled hi
g
h, the input a
t
D7~D0 is treated as display data. When the pin is pulled low, the input at D7~D0
will be transferred to the command register.
When the pin is pulled high and serial interface mode is selected, the data at SDIN
will be interpreted as data. When it is pulled low, the data at SDIN will be
transferred to the command register. In I
2
C mode, this pin acts as SA0 for slave
address selection.
For detail relationship to MCU interface signals, please refer to the Timin
g
Characteristics Diagrams.
17 E/RD# I
R
R
e
e
a
a
d
d
/
/
W
W
r
r
i
i
t
t
e
e
E
E
n
n
a
a
b
b
l
l
e
e
o
o
r
r
R
R
e
e
a
a
d
d
This pin is MCU interface input. When interfacing to a 68XX-series
microprocessor, this pin will be used as the Enable (E) si
g
nal. Read/write operation
is initiated when this pin is pulled high and the CS# is pulled low.
When connecting to an 80XX-microprocessor, this pin receives the Read (RD#)
si
g
nal. Data read operation is initiated when this pin is pulled low and CS# is
pulled low.
When serial or I
2
C mode is selected, this pin must be connected to V
SS
.
GoldenMorning Electronic
剩余39页未读，继续阅读
王者丶君临天下
- 粉丝: 19
- 资源: 265
我的内容管理
展开
最新资源
- AirKiss技术详解：无线传递信息与智能家居连接
- Hibernate主键生成策略详解
- 操作系统实验：位示图法管理磁盘空闲空间
- JSON详解：数据交换的主流格式
- Win7安装Ubuntu双系统详细指南
- FPGA内部结构与工作原理探索
- 信用评分模型解析：WOE、IV与ROC
- 使用LVS+Keepalived构建高可用负载均衡集群
- 微信小程序驱动餐饮与服装业创新转型：便捷管理与低成本优势
- 机器学习入门指南：从基础到进阶
- 解决Win7 IIS配置错误500.22与0x80070032
- SQL-DFS：优化HDFS小文件存储的解决方案
- Hadoop、Hbase、Spark环境部署与主机配置详解
- Kisso：加密会话Cookie实现的单点登录SSO
- OpenCV读取与拼接多幅图像教程
- QT实战：轻松生成与解析JSON数据
资源上传下载、课程学习等过程中有任何疑问或建议，欢迎提出宝贵意见哦~我们会及时处理！
点击此处反馈
