SERIAL-INTERFACED 10-DIGIT LED CONTROLLER IC

DESCRIPTION

The UL319C is a compact LED controller and driver that

interface microprocessors to LED displays through a serial

3-wire interface. It drives LED connected in common anode

configuration. The UL319C drives up to 80 discrete LEDs in

10 segment/8 digit configuration while functioning from a

supply voltage of 5.0V.

FEATURES

* LED driver with 18 outputs (10 segments/8 digits)

* Output pins connected directly to the LEDs

* 3-wire serial bus interface (CLK, STB, DI/O)

* 8-step dimming circuit to control the overall display brightness

* Inputs with Schmitt trigger give superior noise immunity

* 5.0 V (± 10%) for V DD

* Drives common-anode LED digits

* Built-in power on reset circuits

* Built-in pull-up resistor (CLK,STB,DI/O)