GDEH021398 Note 1.5-4: 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 -Communicating with digital temperature sensor G O O D D IS P LA Y Note 1.5-5: This pin (BS1) is for 3-line SPI or 4-line SPI selection. When it is “Low”, 4line SPI is selected. When it is “High”, 3-line SPI (9 bits SPI) is selected. www.good-display.com 9／44 2.13 inch Series
