Introduction
The ST7732 is a single-chip controller/driver for 262K-color, graphic type TFT-LCD. It consists of 396 source line and 162 gate line driving circuits. This chip is capable of connecting directly to an external microprocessor, and accepts Serial Peripheral Interface (SPI), 8-bits/9-bits/16-bits/18-bits parallel interface. Display data can be stored in the on-chip display data RAM of 132 x 162 x 18 bits. It can perform display data RAM read/write operation with no external operation clock to minimize power consumption. In addition, because of the integrated power supply circuits necessary to drive liquid crystal, it is possible to make a display system with fewer components.

FEATUREs
◆ Single chip TFT-LCD controller/driver with display data RAM
◆ Display resolution: 132 (H) x RGB x 162 (V)
◆ Display data RAM (frame memory): 132 x 162 x 18-bits = 384,912 bits
◆ Output:
    - 396 ch source outputs (132RGB)
    - 162 ch gate outputs
    - Common electrode output
◆ Display mode (color mode)
    - Full color mode (idle mode off): 262K-colors
    - Reduce color mode (idle mode on): 8-colors (1-bit for individual R, G, B color depth)
◆ Display resolution option
    - 128 x 160 display with 128 x 18-bits x 160 display RAM
    - 120 x 160 display with 120 x 18-bits x 160 display RAM
    - 132 x 162 display with 132 x 18-bits x 162 display RAM
◆ Supported LC type option
    - Transflective (TR) LC type (When LCM1,LCM0 = “00”)
    - Transmissive (TM) LC type (When LCM1,LCM0 = “01”)
    - Low voltage (LV) LC type (When LCM1,LCM0 = “10”)
    - MVA LC type (When LCM1, LCM0 = “11”)
◆ Supported data format on display host interface
    - 12-bits/pixel: RGB= (444) using the 384k-bits frame memory and LUT
    - 16-bits/pixel: RGB= (565) using the 384k-bits frame memory and LUT
    - 18-bits/pixel: RGB= (666) using the 384k-bits frame memory
◆ Supported MCU Interface
    - 3-line serial interface
    - 4-line serial interface
    - 8-bits, 9-bits, 16-bits, 18-bits interface with 8080-series MCU
    - 8-bits, 9-bits, 16-bits, 18-bits interface with 6800-series MCU
    - 6-bits, 16-bits, 18-bits RGB interface with graphic controller
◆ Display features
    - Area scrolling
    - Partial display mode
    - Software programmable color depth mode
◆ Build-in circuit
    - DC/DC converter
    - Adjustable VCOM generation
    - Non-volatile (NV) memory to store initial register setting
    - Oscillator for display clock generation
    - Timing controller
    - supporting transflective, transmissive, low voltage, MVA type LC
    - Factory default value (module ID, module version, etc) are stored in NV memory
    - Line inversion, frame inversion
◆ NV Memory
    - 7-bits for ID2
    - 8-bits for ID3
    - 7-bits for VCOM adjustment
◆ Supply voltage range
    - Analog supply voltage range for VDD to AGND: 2.5V to 3.3V
    - I/O supply voltage range for VDDI to DGND: 1.6V to 3.3V
◆ Output voltage level
    - Source output voltage range (GVDD to AGND): 3.0V to 5.0V
    - Power supply range for driver circuit (AVDD to AGND): 4.55V to 6.0V
    - Output range of HIGH level of VCOM (VCOMH to AGND): 2.5V to 5.0V
    - Output range of LOW level of VCOM (VCOML to AGND): -2.5V to 0.0V
    - Output range of HIGH level of gate driver (VGH to AGND): +9.4V to 16.2V
    - Output range of LOW level of gate driver (VGL to AGND): -13.5V to –7.0V
◆ Lower power consumption, suitable for battery operated systems
    - CMOS compatible inputs
    - Optimized layout for COG assembly
    - Operate temperature range: -30 to + ℃ 70℃