Datasheet

ST7735
V1.7 16 2009-12-04
6.4 Driver output pins
Name I/O Description
Connect pin
S1 to S396 O - Source driver output pins. -
G1 to G162 O - Gate driver output pins. -
VCI1 I/O - Hi-Z -
AVDD I
- Power input pin for analog circuits.
- In normal usage, connect it to AVDDO.
- AVDD = 5.3V.
AVDDO
AVDDO O
- Output of step-up circuit 1
- Connect a capacitor for stabilization.
Capacitor
VCL O
- A power supply pin for generating VCOML.
- Connect a capacitor for stabilization.
Capacitor
VGH I
- Power input pin for gate driver circuit.
- In normal usage, connect it to VGHO.
VGHO
VGHO O
- Positive output pin of the step-up circuit 2.
- Connect a capacitor for stabilization.
Capacitor
VGL I
- Power input pin for gate driver circuit.
- Negative output of the step-up circuit 2 is connected inside the
driver.
- Connect a capacitor for stabilization.
Capacitor
VREF O
- A reference voltage for power system.
-This test pin for Driver vender test used.
-
GVDD O
- A power output of grayscale voltage generator.
- When internal GVDD generator is not used, connect an external
power supply (AVDD-0.5V) to this pin.
-
VCOMH O
- Positive voltage output of VCOM.
- Connect a capacitor for stabilization.
Capacitor
VCOML O
- Negative voltage output of VCOM.
- Connect a capacitor for stabilization.
Capacitor
VCOM O - A power supply for the TFT-LCD common electrode.
Common
electrode
C11P, C11N O - Capacitor connecting pins for step-up circuit 1 (for AVDDO)
Step-up
Capacitor
C22P, C22N
C23P, C23N
C41P, C41N
O
- Capacitor connecting pins for step-up circuit 2 and 4 (for VGHO,
VGL, VCL)
Step-up
Capacitor