Waveshare 264x176 2.7" E-Ink Display HAT for Raspberry Pi (3 Colors) : Data Sheet : Page 7

Product Specification

Ver 1.2  7 / 43

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

Note 5-4: This pin (BUSY_N) is BUSY_N state output pin. When BUSY_N 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_N 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 (BS) 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

BS MPU Interface

L 4-lines serial peripheral interface (SPI)

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

2.7" e-Paper (B)