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PCF8811U/2DA/1 数据表(PDF) 17 Page - NXP Semiconductors

部件名 PCF8811U/2DA/1
功能描述  80 x 128 pixels matrix LCD driver
PDF  73 Pages
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制造商  PHILIPS [NXP Semiconductors]
网页  http://www.nxp.com
标志 PHILIPS - NXP Semiconductors

PCF8811U/2DA/1 数据表(HTML) 17 Page - NXP Semiconductors

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2004 May 17
17
Philips Semiconductors
Product specification
80
× 128 pixels matrix LCD driver
PCF8811
handbook, full pagewidth
SCE
SCLK
SDATA
DB7 DB6 DB5 DB4
display length instruction
and length data (two bytes)
DB2
DB1 DB0
DB2
data
data
last
data
DB7 DB6 DB5
DB4 DB3
DB1 DB0
MGW746
instruction
display data string
Fig.14 Transmission of several bytes.
handbook, full pagewidth
MGW747
SCE
SCLK
SDATA
data
data
data
data
data
data
DB7
DB7 DB6 DB5 DB4 DB3 DB2
DB1 DB0
DB6 DB5
DB4
instruction
display data string
Fig.15 Transmission interrupted by SCE.
11.1.2
READ MODE (ONLY EXTENDED COMMAND SET)
The read mode of the interface means that the
microcontroller reads data from the PCF8811. To do so the
microcontroller first has to send a command (the read
status command) and then the PCF8811 will respond by
transmitting data on the SDO line. After that SCE is
required to go HIGH (see Fig.16).
The PCF8811 samples the SDIN data on rising SCLK
edges, but shifts SDO data on falling SCLK edges. Thus
the microcontroller is supposed to read SDO data on rising
SCLK edges.
After the read status command has been sent, the SDIN
line must be set to 3-state not later then the falling SCLK
edge of the last bit (see Fig.16).
The serial interface timing diagram is given in Chapter 19.



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