GDEW0154M09 datasheet(8/58 Pages) ETC

8 / 58 page

Note 5-1: This pin (CS#) is the chip select input connecting to the MCU. The chip is

enabled for MCU communication only when CS# is pulled Low.

Note 5-2: This pin (D/C#) is Data/Command control pin connecting to the MCU.

When the pin is pulled HIGH, the data will be interpreted as data. When the pin is

pulled Low, the data will be interpreted as command.

Note 5-3: This pin (RES#) is reset signal input. The Reset is active Low.

Note 5-4: This pin (BUSY) is Busy state output pin. When Busy is low, the operation of

chip should not be interrupted and any commands should not be issued to the module.

The driver IC will put Busy pin low when the driver IC is working such as:

Outputting display waveform; or

Programming with OTP

Communicating with digital temperature sensor

Note 5-5: This pin (BS1) is for 3-line SPI or 4-line SPI selection. When it is “Low”, 4-

line SPI is selected. When it is “High”, 3-line SPI (9 bits SPI) is selected. Please refer to

below Table.

Table: Bus interface selection

BS1

MPU Interface

4-lines serial peripheral interface (SPI)

3-lines serial peripheral interface (SPI) – 9 bits SPI

GDEW0154M09

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8／58

1.54 inch Series

GDEW0154M09 Datasheet(PDF) 8 Page - List of Unclassifed Manufacturers