Data Sheet

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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 High, 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
High when the driver IC is working such as:
- Outputting display waveform; or
- Programming with OTP
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
L
4-lines serial peripheral interface (SPI)
H
3-lines serial peripheral interface (SPI) – 9 bits SPI