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STE2004S 数据表(PDF) 37 Page - STMicroelectronics

部件名 STE2004S
功能描述  102 x 65 single-chip LCD controller/driver
PDF  79 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STE2004S 数据表(HTML) 37 Page - STMicroelectronics

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STE2004S
Bus interfaces
37/79
Throughout SDOUT can be read the driver I2C slave address or the status byte. The
command sequence that allows to read I2C slave address or the status byte is shown in
Figure 39. and Figure 40..
If the R bit is set to logic 0 and D/C=0, the I2C slave address is read. If the R bit is set to logic
1 and D/C=0, the the I2C slave address is read. SDOUT is in high impedance in steady state
and during data write.
It is possible to short circuit SDOUT and SDIN and read the I2C address or status byte
without any additional line.
Figure 38.
3-lines serial interface protocol in writing mode
Figure 39.
3-lines SPI interface protocol in reading mode
WRITE MODE
COMMAND WORD
CONTROL BYTE
MSB........LSB
Co
LAST
N> 0 BYTE
DATA Byte
Control Byte
0
DATA Byte
CONTROL BYTE
C
o
D
C
00
H
[1]
Control Byte
R
/
W
H
[0]
H
E
DATA Byte
Control Byte
Co
1
0
DATA Byte
CONTROL BYTE
MSB........LSB
LAST
N> 0 BYTE
DATA Byte = Command
if D/C=0
DATA Byte = DDRAM Data if D/C=1
DATA Byte
Control Byte
0
DATA Byte
CONTROL BYTE
MSB........LSB
LAST
N> 0 BYTE
0
1
TRANSFERRED
ONLY COMMANDS
TRANSFERRED
ONLY DDRAM DATA
LR0002
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
Don't
Care
CS
SDIN
SCLK
High-Z
DB1
DB0
High-Z
Don't
Care
Don't
Care
Don't
Care
Don't
Care
Don't
Care
Don't
Care
Don't
Care
Command Write
DATA Read
DB7
DB6
DB5
DB4
DB3
DB2
Co=1
D/C=0
"Command"
R/W=1
"Read"
SDOUT
High-Z
DB1
DB0
High-Z
DB7
DB6
DB5
DB4
DB3
DB2
ID-Number
STATUS BYTE
LR0077



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