DESCRIPTION

PT6553 is an LCD Driver IC providing key scan circuitry which can accept up to a maximum of 30 keys, thereby, reducing printed circuit board wiring. It can drive up to 126 segments and is capable of controlling up to 4 general purpose output ports. The reset circuit provides on-chip voltage detection making it possible to prevent incorrect displays. Pin assignments and application circuit are optimized for easy PCB layout and cost saving advantages.

FEATURES

• Up to 126 segments outputs

• Up to 4 general purpose output ports

• Key input function (up to 30 Keys)

• 1/3 duty - 1/2 bias and 1/3 duty - 1/3 bias drive techniques

• Sleep mode and all segments off function

• Direct display of display data without using a decoder

• On-chip voltage-detection type reset circuit

• RC oscillation circuit

APPLICATIONS

• Cellular phone

• Data bank, Organizer

• Electronic dictionary/Translator

• P.D.A.

• P.O.S.

• Information appliance

• Caller ID

• Pager

• Electronic equipment with LCD display