ST7588T datasheet(21/61 Pages) SITRONIX

21 / 61 page

ST7588T

Ver 1.3

21/61

2007/09/20

Serial Interface

4-Line SPI

When the ST7588T is active (CSB=

”L”), serial data (DB1~3) and serial clock (DB0) inputs are enabled. While not active, the

internal 8-bit shift register and the 3-bit counter are reset. The display data/command indication may be controlled either by

software or the Register Select (A0) Pin. When the A0 pin is used, data is display data when A0 is high and is command data

when A0 is low. When A0 is not used, the LCD Driver will receive command from MCU by default. If messages on the data

pin are data rather than command, MCU should send Data Direction command (11101000) to control the data direction and

then one more command to define the number of data bytes will be write. After these two continuous commands are sent, the

following messages will be data rather than command. Serial data can be read on the rising edge of serial clock going into

DB6 and processed as 8-bit parallel data on the eighth serial clock. And the DDRAM column address pointer will be

increased by one automatically. The next bytes after the display data string is handled as command data.

(1) 4-Line SPI A Mode (PS0 = "L", PS1 = "H", PS2 = "L")

(2) 4-Line SPI B Mode (PS0 = "L", PS1 = "H", PS2 = "H")

Figure 3

4Lline SPI Timing

Figure 2

4-Line SPI Timing

ST7588T Datasheet(PDF) 21 Page - Sitronix Technology Co., Ltd.