Introduction The ST7713 is a single-chip controller/driver for 262K-color, graphic type TFT-LCD. It consists of 396 source line and 132 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 132 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 132 (V) ◆ Display data RAM (frame memory): 132 x 132x 18-bits = 313,632 bits ◆ Output: - 396 ch source outputs (132RGB) - 132 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 - 132 x 132 display with 132 x 18-bits x 132 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 - Support transflective, transmissive, low voltage, MVA type LC - Factory default value (contrast, 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): 3.3V to 5.0V - Power supply range for driver circuit (AVDD to AGND): 4.95V 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℃
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