HT16512 Datasheet, PDF (1/12 Pages) Holtek Semiconductor Inc – 1/4 to 1/11 Duty VFD Controller

HT16512
1/4 to 1/11 Duty VFD Controller
Features
· Logic voltage: 5V
· High-voltage output: V_DD-30V max.
· Multiple display (11-segment & 11-digit to
16-segment & 4-digit)
· 6´4 matrix key scanning
· 8 steps dimmer circuit
· 4 LED output ports
· 4-bit general purpose input port
· No external resistors necessary for driver
output (provides PMOS open-drain and
pull-low resistor output)
· Serial interface with MCU
(CLK, CS, DI, DO)
Applications
· Consumer products panel function control
· Industrial measuring instrument panel func-
tion control
· Other similar application panel function
control
General Description
HT16512 is a VFD (Vacuum Fluorescent Dis-
play) controller/driver that is driven on a 1/4 to
1/11 duty factor. It consists of 11 segment out-
put lines, 6 grid output lines, 5 segment/grid
output drive lines, 4 LED output ports, a con-
trol circuit, a display memory, and a key scan
circuit.
Serial data inputs to the HT16512 through a
three-line serial interface. This VFD control-
ler/driver is ideal as a peripheral device for an
MCU.
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December 24, 1999