D16312

DATA SHEET MOS INTEGRATED CIRCUIT
PD16312 1/4- to 1/11-DUTY FIPTM (VFD) CONTROLLER/DRIVER The
PD16312 is a FIP (fluorescent Indicator Panel, or Vacuum Fluorescent Display) controller/driver that is driven on a 1/4- to 1/11 duty factor. It consists of 11 segment output lines, 6 grid output lines, 5 segment/grid output drive lines, a display memory, a control circuit, and a key scan circuit. Serial data is input to the
PD16312 through a www.DataSheet4U.comthree-line serial interface. This FIP controller/driver is ideal as a peripheral device for a single-chip microcomputer. FEATURES Multiple display modes (11-segment & 11-digit to 16-segment & 4-digit) Key scanning (6
4 matrix) Dimming circuit (eight steps) High-voltage output (VDD  35 V max). LED ports (4 chs., 20 mA max). General-purpose input port (4 bits) No external resistors necessary for driver outputs (P-ch open-drain + pull-down resistor output) Serial interface (CLK, STB, DIN, DOUT) ORDERING INFORMATION Part Number Package 44-pin plastic QFP ( 10)
PD16312GB-3B4 Document No. IC-3307 (1st edition) Date Published March 1997 P Printed in Japan © 1993
PD16312 BLOCK DIAGRAM Command decoder Dimming circuit DIN DOUT Serial I/F CLK STB Seg1 16-bit 16 output latch 5 11 Segment driver Seg11 Display memeory 16 bits × 11 words www.DataSheet4U.com VDD R OSC Timing generator key scan Data selector 5 Multip lexed diver Seg12/Grid11 Seg16/Grid7 Key data memory (4 × 6) Key1 to Key4 11-bit shi...