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| 型號： | OM6208 |
| 英文描述： | 65 x 96 pixels matrix grey-scale LCD driver |
| 中文描述： | 65 × 96像素矩陣灰度LCD驅(qū)動器 |
| 文件頁數(shù)： | 13/68頁 |
| 文件大小： | 296K |
| 代理商： | OM6208 |
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2003 feb 10
13
Philips Semiconductors
Product specification
65 x 96 pixels matrix grey-scale LCD driver
OM6208
9
SERIAL INTERFACING
Communication with the microcontroller can occur via a
clock-synchronized serial peripheral interface. It is
possible to select two different 3-line (SPI and serial
interface) or a 4-line SPI interface. Selection is done via
the PS[1:0] inputs.
9.1
Serial peripheral interface
The Serial Peripheral Interface (SPI) is a 3-line or 4-line
interface for communication between the microcontroller
and the LCD driver chip. Three lines are common to both
3-line and 4-line SPI, these are SCE (chip enable), SCLK
(serial clock) and SDATA (serial data). For the 4-line SPI a
separate D/C line is added. The OM6208 is connected to
the serial data I/O of the microcontroller by pads SDATA
(data input) and SDO (data output) connected together.
9.1.1
W
RITE MODE
The display data/command indication may be controlled
by software or by the D/C select pin. When the D/C pad is
used, display data is transmitted when D/C is HIGH, and
command data is transmitted when D/C is LOW (see
Figs 10 and 11). When D/C is not used, the ‘display data
length’instructionisusedtoindicatethataspecificnumber
of display data bytes (1 to 255) are to be transmitted (see
Fig.11). 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 (see Fig.12).
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.13).
handbook, full pagewidth
D/C
SCLK
SDATA
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
MGW744
Fig.10 4-line SPI 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.11 4-line SPI bus protocol; transmission of several bytes.
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| OM62112 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:48 X 84 dot matrix LCD driver |
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