UL319B Description
The UL319B is a pact LED controller and driver that interface microprocessors to LED displays through a serial 3-wire interface. It drives LED connected in mon anode configuration. The UL319B drives up to 112 discrete LEDs in 14 segment/8 digit configuration while functioning from a supply voltage of 5.0V.
UL319B Key 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
- ORDERING INFORMATION
- Inputs with Schmitt trigger give superior noise immunity
- 5.0 V (± 10%) for VDD
- Drives mon-anode LED digits
- Built-in power on reset circuits