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参数资料
| 型号： | PCF8890 |
| 英文描述： | 240 + 1 outputs TFT LCD gate driver |
| 中文描述： | 240 1输出TFT液晶栅极驱动器 |
| 文件页数： | 50/76页 |
| 文件大小： | 385K |
| 代理商： | PCF8890 |
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2002 Aug 16
50
Philips Semiconductors
Preliminary specification
STN RGB - 384 output column driver
PCF8832
handbook, full pagewidth
MGW719
Sr 0 1 1 1 1
S
A
0
S
A
1
0 A
acknowledge
from PCF8832
acknowledge
from PCF8832
acknowledge
from PCF8832
acknowledge
from PCF8832
acknowledge
from PCF8832
1
control byte
A
data byte
data byte
n
≥
0 bytes
1 byte
slave address
MSB . . . . . . . . . . . LSB
2n
≥
0 bytes
A
CO
CO
0
A
A P
control byte
D/C
D/C
R/W
Fig.52 Master transmits in Hs-mode to slave receiver; WRITE mode.
handbook, full pagewidth
MGW720
S 0 1 1 1 1
S
A
0
C
O
S
A
1
0
0 1 1 1 1
S
A
0
S
A
1
1
0
A
ADR[5:0]
A Sr
slave address
slave address
control byte
read byte
A
acknowledge
slave
acknowledge
slave
start
condition
repeated start
condition
stop
condition
A P
register value
D/C
R/W
acknowledge
slave
acknowledge
master
R/W
Fig.53 Master receives from slave transmitter; READ mode.
12.3
Command decoder
The command decoder identifies command words that
arrive on the I
2
C-bus:
Pairs of bytes
– firstbytedetermineswhetherinformationisdisplayor
instruction data
– second byte contains information
Stream of information bytes after CO = 0; display or
instruction data depending on last D/C bit.
The most significant bit of a control byte is the continuation
bit CO. If this bit is logic 1 it indicates that only
one
data
byte, either command or RAM data, will follow. If the bit
is logic 0, it indicates that a
series
of data bytes, either
command or RAM data, may follow. The DB6 bit of a
control byte is the RAM-data/command bit D/C. When this
bit is logic 1, it indicates that a RAM-data byte will be
transferred next. If the bit is logic 0, it indicates that a
command byte will be transferred next.
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