UL319B中文资料SERIAL-INTERFACED 14-DIGIT LED CONTROLLER IC WITH KEYSCAN数据手册UTC规格书

描述 Description

The UL319B is a compact LED controller and driver thatinterface microprocessors to LED displays through a serial3-wire interface. It drives LED connected in common anodeconfiguration. The UL319B drives up to 112 discrete LEDsin 14 segment/8 digit configuration while functioning from asupply voltage of 5.0V.

特性 Features

LED driver with 22 outputs (14 segments/8 digits) Output pins connected directly to the LEDs Key-scanning (8 x 2 matrix) 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 VDD Drives common-anode LED digits Built-in power on reset circuits Built-in pull-up resistor (CLK,STB,DI/O)