Feature: PIN No. Symbol Descriptions 1 CS Screen driver chip select pin, active low 2 RS RS = 1 select data RS = 2 select register 3 WR Parallel write control pin 4 RD Parallel read control pin 5 RES Screen reset pin, low level reset 6~13 D0~D7 Low 8-bit data line 14~21 D8~D15 High 8-bit data line 22,26,27 GND Power ground 23 BLK Backlight control; default is on, backlight is off when low 24,25 VCC Power supply 28 BL_VDD Backlight voltage adjustment, default to the screen voltage, can be adjusted 29 MIS Touch chip output signal 30 MOS Touch chip input signal 31 PEN Touch chip interrupt 32 NC Hanging 33 TCS Touch chip chip select, active low 34 TCLK Touch chip clock Package includes: 1 x 4 inch screen
