參數(shù)資料
型號: KS0090i
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: Driver & Controller for Dot Matrix LCD(點(diǎn)陣LCD的驅(qū)動器和控制器)
中文描述: 驅(qū)動程序
文件頁數(shù): 11/45頁
文件大小: 685K
代理商: KS0090I
26COM/64SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD
KS0090i
11
Preliminary
DATA TRANSFERRING SEQUENCE
1. Control Byte Format
2. Normal write operation
CO1: The following byte will be a data byte. After data byte, KS0090i will look upon the next 8-bit as a control byte
CO2: After this control byte, all the following bytes will be considered as a data byte before the stop procedure.
3. Unexpected read by setting R/W as 1
Control Byte Format
CO
RS
WB
: Don
t care
CO =
0
: Last control byte, CO =
1
: More control byte will follow
RS =
0
: Set Instruction register, RS =
1
: Set data register
WB =
0
: Normal write operation, WB =
1
: Unexpected read mode
KS0090i provides write-only mode of I
2
C interface.
So if unexpected read happen, KS0090i makes SDA floated. ACK occur after passing 8 cycle of SCL.
S
T
A
R
T
A
6
A
5
A
4
A
3
A
2
A
1
A
A
C
K
1R
S0 X X X X XA
C
K
D
B
7
D
B
6
D
B
5
D
B
4
D
B
3
D
B
2
D
B
1
D
B
0A
C
K
0R
S0 X X X X XA
C
K
D
B
7
D
B
6
D
B
5
D
B
4
D
B
3
D
B
2
D
B
1
D
B
0A
C
K
S
T
O
P
CONTROL BYTE
DATA BYTE
CONTROL BYTE
DATA BYTE
Sl ave address
gi ven by user
to A0~A6
for KS0090i
2n
0 byte
1 byte
n
0 byte
R/WCO1 WB
CO2
WB
Acknow egemnt
fromKS0090i
S
T
A
R
T
A
6
A
5
A
4
A
3
A
2
A
1
A
0
1
A
C
K
When R/W is
1
, SDA pin is floated. And only one ACK signal
occur for matching the slave address field. The following bit of
SDA will be ignored before the STOP procedure.
So I
2
C block does not work.
S
T
O
P
Acknowledgement from KS0090i
Slave address
R/W
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