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EPL09060 Datasheet(PDF) 13 Page - ELAN Microelectronics Corp |
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EPL09060 Datasheet(HTML) 13 Page - ELAN Microelectronics Corp |
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13 / 54 page  EPL09060 9 COM/60 SEG LCD Driver Product Specification (V1.0) 12.28.2005 13 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. 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 D7 D6 D5 D4 D3 D2 D1 D0 D7 D7 D6 D5 D4 D3 D2 D1 D0 D7 SDI (D7) SDO (D5) SCK (D6) /CS1 CS2 A0 |
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