PT6555 Datasheet, PDF (1/28 Pages) Princeton Technology Corp – LCD Driver IC

DESCRIPTION
PT6555 is a high performance Liquid Crystal Display
(LCD) Driver IC utilizing CMOS Technology specially
designed with Key Input Function. It can drive up to a
maximum of 164 segments and control up to 4 general
purpose output ports. It includes a Key Scan Circuit
that can support up to 30 key inputs and provides
On-Chip Voltage Detection Type Reset Circuit which
prevents incorrect display. Display Data can be
directly displayed without using any decoder. PT6555
also supports both 1/4 duty-1/2 bias and 1/4 duty-1/3
bias drive techniques. Pin assignments and
application circuit are optimized for easy PCB Layout
and cost saving advantages.
APPLICATIONS
• Electronic Equipment with LCD Display
BLOCK DIAGRAM
PT6555
LCD Driver IC
FEATURES
• CMOS Technology
• PT6555: 48-pin, up to 140 Segment Drivers (4
Com x 35 Seg)
• PT6555-LQ: 64-pin, up to 164 Segment Drivers (4
Com x 41 Seg)
• Up to 4 General Purpose Output Ports
• Key Input Function (Only PT6555-LQ)
• 1/4 Duty-1/2 Bias and 1/4 Duty-1/3 Bias Drive
Techniques
• Sleep Mode & All Segment OFF Function
• On-Chip Voltage Detection Type Reset Circuit
• RC Oscillation Circuit
• Power supply voltage: 4.5 to 6V
• COMS/TTL compatible logic input pins
• Available in 64 pins LQFP; 48 pins LQFP Package
Note: *= Only PT6555-LQ has KI1~KI5, SG36~SG39, KS1~KS6, DO pins.
Tel: [phone]‧Fax: [phone]‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan