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PT6955 V1.5

- 1 -

June, 2005

LED Driver IC

PT6955

DESCRIPTION

PT6955 is an LED Controller driven on a 1/4 to 1/7 duty factor. Twelve/nine segment output lines, 4 to

7 grid output lines, one display memory, control circuit are all incorporated into a single chip to build a

highly reliable peripheral device for a single chip microcomputer. Serial data is fed to PT6955 via a

three-line serial interface. Housed in a 24-pin SOP, PT6955’s pin assignments and application circuit

are optimized for easy PCB Layout and cost saving advantages.

FEATURES

• CMOS Technology

• Low Power Consumption

• 8-Step Dimming Circuitry

• Serial Interface for Clock, Data Input, Strobe Pins

• Available in 24-pin, SOP

APPLICATION

• Micro-computer Peripheral Device