OM6208 NXP Semiconductors, OM6208 Datasheet - Page 13
OM6208
Manufacturer Part Number
OM6208
Description
Om6208 65 X 96 Pixels Matrix Grey-scale Lcd Driver
Manufacturer
NXP Semiconductors
Datasheet
1.OM6208.pdf
(68 pages)
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Philips Semiconductors
9
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
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.
2003 feb 10
handbook, full pagewidth
handbook, full pagewidth
65 x 96 pixels matrix grey-scale LCD driver
SERIAL INTERFACING
SDATA
SCLK
SCE
D/C
Serial peripheral interface
SDATA
SCLK
SCE
D/C
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Fig.11 4-line SPI bus protocol; transmission of several bytes.
Fig.10 4-line SPI bus protocol; transmission of one byte.
DB7
DB6
DB5
DB4
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
13
9.1.1
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’ instruction is used to indicate that a specific number
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).
DB3
W
DB2
RITE MODE
DB1
DB0
DB7
Product specification
MGW744
DB6 DB5
OM6208
MGW745
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