ST7787 datasheet(41/217 Pages) SITRONIX

Part #	ST7787

Description	262K Color Single-Chip TFT Controller/Driver

PDF	217 Pages

Scroll/Zoom	100%

Manufacturer	SITRONIX [Sitronix Technology Co., Ltd.]

Direct Link	http://www.sitronix.com.tw

Logo

41 / 217 page

ST7787

V1.7

2008.04.18

9.4.2 Read Functions

The read mode of the interface means that the micro controller reads register value from the Driver. To do the micro

controller first has to send a command (Read ID or register command) and then the following byte is transmitted in the

opposite direction. After that CSX is required to go to high before a new command is send (see the below figure). The

Driver samples the SDA (input data) at rising edge of SCL, but shifts SDA (output data) at the falling edge of SCL. Thus the

micro controller is supported to read at the rising edge of SCL.

After the read status command has been sent, the SDA line must be set to tri-state no later than at the falling edge of SCL

of the last bit.

3-line serial protocol (for RDID1/RDID2/RDID3/0Ah/0Bh/0Ch/0Dh/0Eh/0Fh command: 8-bit read):

3-line serial protocol (for RDDID command: 24-bit read)

3-line Serial Protocol (for RDDST command: 32-bit read)

Fig. 9.4.4 3-line serial interface read protocol

ST7787 Datasheet(PDF) 41 Page - Sitronix Technology Co., Ltd.