NEC UPD16666A
The PPD16666A is a row (common) driver which contains a RAM capable of full-dot LCD display. With 240 outputs, this driver can be combined with a column (segment) driver PPD16661A which contains a RAM to display VGA (640 by 480 dots), 1/2 VGA, or 1/4 VGA, etc.DESCRIPTION
By combining it with the PPD16661A, the PPD16666A can provide four gray levels by frame rate control. With its built-in display RAM in the column driver, the driver kit can reduce current consumption, thus making it most suitable for the display section of a PDA or portable terminal.FEATURES
●●
●
●
● LCD-driven voltage: 20 to 36 V Duty: 1/240 Driving type: 2 lines selected simultaneously Output count: 240 outputs Capable of gray level display: 4 gray levels (frame rate control) ORDERING INFORMATION Part No. Package TCP (TAB) Standard TCP (OLB: 0.2 mm pitch; folding) PPD16666AN-XXX PPD16666AN-051 The TCP’s external shape is custom-ordered. Therefore, if you have a shape in mind, please contact an NEC salesperson. Document No. S12370EJ2V0DS00 (2nd edition) Date Published October 1997 N Printed in Japan © 1997 PPD16666A BLOCK DIAGRAM X1 to X240 VDD Liquid-crystal drive circuit V1 VEE Selection control circuit Q1 to Q120 Bidirectional shift register DIR VCC1 VSS Level shifter L1 L2 DOFFB’ STB FRMB Column driver interface BLOCK FUNCTION 1.