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W66881CF

Winbond
Part Number W66881CF
Manufacturer Winbond
Description VFD CONTROLLER/DRIVER
Published Jul 14, 2015
Detailed Description W66881CF GENERAL DESCRIPTION The W66881CF is a VFD (Vacuum Fluorescent Display) controller/driver. It has two operation...
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W66881CF
W66881CF

Overview
W66881CF GENERAL DESCRIPTION The W66881CF is a VFD (Vacuum Fluorescent Display) controller/driver.
It has two operation configurations: (1) 8×16 Configuration which replaces the W66880CF without the necessity of changing the original driver program for W66880CF, and (2) 8×20 Configuration which provides more segment drivers, and can be programmed to drive a VFD from 4 grids by 20 segments to 8 grids by 18 segments.
The W66881CF also includes a 24-key key scan circuit, four LED ports and four general purpose input ports.
Data communication with the W66881CF is via a serial interface.
FEATURES • Flexible display modes (4 to 8 grids) − 4 grids × 20 segments to 8 grids × 18 segments • 6 × 4 matrix key scanning Functional Block (8x20 configuration) VFD CONTROLLER/DRIVER • 8 steps dimming circuit • High voltage output (VDD - VEE = 30V max) • Four 15 mA LED ports • Four general-purpose input port • Internal driver output pull-down resisters • Only one external resister is needed for the on chip oscillator • Simple serial interface • Driver program compatible with W66880CF's (8x16 only) • 48-pin PQFP APPLICATIONS • VFD display driving and panel function control • Applicable to FUTABA Standardized VFD Panel - Part#: 6-BT-265GK and 6-BT-267GK, both 6 grids × 16 segments, for VCD Player - Part#: 25u48109BAN, 6 grids × 19 segments, for DVD Player Pin Configuration OSC V SS LED1 LED2 LED3 LED4 V DD G1 G2 G3 G4 G5 Din Dout CLK STB VDD R OSC Key[1:4] Serial interface OSC 4 Display memory 20 bits x 8 words Scan Timing Generator key data memory 20 18 2 Data switch 2 8 6 2 Segment Driver Sg[1:18] Multiplexed Sg[19:20] driver /G[8:7] 4-bit input latch 4 SW[1:4] 4-bit output latch 4 LED[1:4] Grid G[1:6] driver VDD VSS V EE Key4 13 V DD 14 Sg1/KS1 15 Sg2/KS2 16 Sg3/KS3 17 Sg4/KS4 18 48 47 46 45 44 43 42 41 40 39 38 37 8x20 Configuration SW1 1 SW2 SW3 2 3 SW4 Dout 4 5 Din VSS CLK 6 7 8 STB 9 Key1 10 Key2 11 Key3 12 W66881 (8x20 Configuration) 36 G...


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