DESCRIPTION

The µPD16715A is a source driver for TFT-LCDs capable of dealing with displays with 64-gray scales. Data input is based on digital input configured as 6 bits by 6 dots (2 pixels), which can realize a full-color display of 260,000 colors by output of 64 values γ-corrected by an internal D/A converter and 5-by-2 external power modules. Because the output dynamic range is as large as VSS2 + 0.1 V to VDD2 – 0.1 V, level inversion operation of the LCD’s common electrode is rendered unnecessary. Also, to be able to deal with dot-line inversion when mounted on a single side, this source driver is equipped with a built-in 6-bit D/A converter circuit whose odd output pins and even output pins respectively output gray scale voltages of differing polarity. Assuring a maximum clock frequency of 55 MHz when driving at 3.0 V, this driver is applicable to XGA/SXGA-standard TFT-LCD panels.

FEATURES

• CMOS level input

• 384 outputs

• Input of 6 bits (gradation data) by 6 dots

• Capable of outputting 64 values by means of 5-by-2 external power modules (10 units) and a D/A converter

• Logic power supply (VDD1): 3.3 V ± 0.3 V

• Driver power supply (VDD2): 11.0 V +2.5 –2.0V

• High-speed data transfer: fCLK = 55 MHz (internal data transfer speed when operating at 3.0 V)

• Output dynamic range VSS2 + 0.1 V to VDD2 – 0.1 V

• Apply for only dot-line inversion

• Single bank arrangement is possible (POL)

• Display data inversion function (POL2)

• Low power control function (LPC)

• Single-sided mounting (Slim TCP)