HT16515 -- 1/4 to 1/12 Duty VFD Controller General Description HT16515 is a VFD (Vacuum FluorescentDisplay) controller/driver that is driven on a 1/4 to 1/12 dutyfactor. It consists of 16 segment output lines, 4 grid outputlines, 8 segment/grid output drive lines, 4 LED output ports, acontrol circuit, a display memory, and a key scan circuit.
Serial data inputs to the HT16515 through a three-line serialinterface. This VFD controller/driver is an ideal MCU peripheraldevice. Features - Logic voltage: 3.0V~5V
- High-voltage output: VDD-35V max.
- Multiple display (16-segment & 12-digit to 24-segment &4-digit)
- 16×2 matrix key scanning
- 8 steps dimmer circuit
- 4 LED output ports (20mA max.)
- No external resistors necessary for driver output (providesPMOS open-drain and pull-low resistor output)
- Serial interface with MCU (CLK, CSB, DI, DO)
- 44-pin QFP package
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