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