HT16515

www.DataSheet4U.com HT16515 1/4 to 1/12 Duty VFD Controller Features · Logic voltage: 5V · High-voltage output: VDD-35V max. · Multiple display · 4 LED output ports (20mA max.) · No external resistors necessary for driver output (16-segment & 12-digit to 24-segment & 4-digit) · 16´2 matrix key scanning · 8 steps dimmer circuit (provides PMOS open-drain and pull-low resistor output) · Serial interface with MCU (CLK, CS, DI, DO) · 44-pin QFP package Applications · Consumer products panel function control · Industrial measuring instrument panel function control · Other similar applications for panel function control General Description HT16515 is a VFD (Vacuum Fluorescent Display) controller/driver that is driven on a 1/4 to 1/12 duty factor. It consists of 16 segment output lines, 4 grid output lines, 8 segment/grid output drive lines, 4 LED output ports, a control circuit, a display memory, and a key scan circuit. Serial data inputs to the HT16515 through a three-line serial interface. This VFD controller/driver is an ideal MCU peripheral device. Block Diagram C o m m a n d D e c o d e r S e r ia l I/F S e g 1 /K S 1 S e g 1 6 /K S 1 6 D I D O C L K C S D is p la y R A M 2 4 - B it ´ 1 2 W o r d s 2 4 - B it O u tp u t L a tc h 2 4 8 1 6 S e g m e n t D r iv e r O S C O S C T im in g G e n e r a to r K e y S c a n K e y D a ta M e m o ry (2 ´ 1 6 ) D a ta S e le c to r 8 1 2 4 D im m in g C ir c u it 8 M u ltip le x e d D r iv e r S e g 1 7 /G r id 1 2 S e g...