參數(shù)資料
型號(hào)： PCF8811
廠商： NXP Semiconductors N.V.
英文描述： 80 x 128 pixels matrix LCD driver
中文描述： 80 × 128像素矩陣LCD驅(qū)動(dòng)器
文件頁(yè)數(shù)： 16/73頁(yè)
文件大?。?/td> 434K
代理商： PCF8811
2004 May 17
16
Philips Semiconductors
Product specification
80
×
128 pixels matrix LCD driver
PCF8811
11 SERIAL INTERFACING (SPI AND SERIAL
INTERFACE)
Communication with the microcontroller can also occur via
a clock-synchronized Serial Peripheral Interface (SPI). It is
possible to select two different 3-line (SPI and serial
interface) or a 4-line serial interface. Selection is achieved
via PS[2:0]; see Section 7.12.
11.1
Serial peripheral interface
The serial peripheral interface is a 3-line or 4-line interface
for communication between the microcontroller and the
LCD driver chip. The 3 lines are: SCE (chip enable), SCLK
(serial clock) and SDATA (serial data). For the 4-line serial
interface a separate D/C line is added. The PCF8811 is
connected to the serial data I/O (SDA) of the
microcontroller by two pins: SDATA (data input) and SDO
(data output) connected together.
11.1.1
W
RITE MODE
The display data/command indication may be controlled
either via software or the D/C select pin. When the D/C pin
is used, display data is transmitted when D/C is HIGH, and
command data is transmitted when D/C is LOW
(see Figs 12 and 13). When pin D/C is not used, the
display data length instruction is used to indicate that
a specificnumberof displaydatabytes(1 to 255)are tobe
transmitted (see Fig.14). The next byte after the display
data string is handled as an instruction command.
When the 3-line SPI interface is used the display
data/command is controlled by software.
If SCE is pulled HIGH during a serial display data stream,
the interrupted byte is invalid data but all previously
transmitted data is valid. The next byte received will be
handled as an instruction command (see Fig.15).
handbook, full pagewidth
D/C
SCLK
SDATA
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
MGW744
Fig.12 Serial bus protocol: transmission of one byte.
handbook, full pagewidth
D/C
SCLK
SDATA
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
DB7
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
DB6
DB5
MGW745
Fig.13 Serial bus protocol: transmission of several bytes.
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PCF8811MU/2DA/1 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80 x 128 pixels matrix LCD driver
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