UL316

DESCRIPTION 

The UL316 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 UL316 drives up to 48 discrete LEDs in

8 segment/6 digit configuration while functioning from a 

supply voltage of 5.0V. 

FEATURES 

* LED driver with 14 outputs (8 segments/6 digits)×40 mA 

load current capability for each segment 

* Output pins connected directly to the LEDs or can be 

open-drain 

* Key-scanning (8 x 2 matrix) 

* 3-wire serial bus interface (CLK, STB, DIN/DOUT) 

* 8-step dimming circuit to control the overall display 

brightness 

* Single external resistor for output current setting 

* Inputs with Schmitt trigger give superior noise 

immunity 

* A single LED digit output (DIG1_LED) can be used to 

drive up to 8 discrete LEDs 

* 8-step dimming circuit to control brightness of 

individual LEDs for LED digit 

* 5.0 V (± 10%) for VCC

* Drives common-anode LED digits 

* Built-in power on reset and soft-start circuits

规格书UL316