EPL09060F Ver la hoja de datos (PDF) - ELAN Microelectronics
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EPL09060F Datasheet PDF : 54 Pages
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EPL09060
9 COM/60 SEG LCD Driver
7.1.2 Selecting the Interface Type
The EPL09060 can be operated with serial interface (SPI) and parallel interface (80-
series or 68-series) as selected by P/S pin.
Serial Interface (SPI)
When serial mode (PS = "L"), D6 (SCK) is used as serial clock input pin, D7 (SDI) is
used as serial data input pin, D5 (SDO) is used as serial data output pin. When the
LSI is active (/CS1=”L”, CS2=”H”), serial data input (D7), serial clock input (D6) inputs
and serial data output (D5) are enabled. The 8-bit shift register and 3-bit counter are
reset to the initial condition when the chip is not selected. The data input/output from
SDI/SDO terminal is MSB first as in the order of D7, D6…D0, and is latched at the
rising edge of the serial clock SCK. Serial input data is display data when A0="H"
and instruction when A0="L". The A0 input is read in and identified at the rising edge
of the (8 x n) serial clock pulse. Since the clock signal (D6) is easy to be affected by
the external noise caused by the line length, the operation check on the actual
machine is recommended.
/CS1
CS2
SCK
(D6)
SDI
(D7)
D7
D6
D5
D4
D3
D2
D1
D0
D7
SDO
(D5)
D7
D6
D5
D4
D3
D2
D1
D0
D7
A0
Figure 4 Serial Interface Signal Chart
A0
/WR (R/W)
D7 (SDI)
D5 (SDO)
0
0
Instruction Write
Status Read
0
1
Invalid
Status Read
1
0
Display Data Write Status Read
1
1
Invalid
Display Data Read
Product Specification (V1.0) 12.28.2005
13
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