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PDF W66880CF Data sheet ( Hoja de datos )
| Número de pieza | W66880CF | |
| Descripción | VFD CONTROLLER/DRIVER | |
| Fabricantes | Winbond | |
| Logotipo |  |
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W66880CF
GENERAL DESCRIPTION
The W66880CF is a VFD (Vacuum Fluorescent Display)
controller/ driver. It can be programmed to drive a VFD
with 4 grids by 16 segments to 8 grids by 14 segments.
The W66880CF also includes a 24-key key scan circuit
and four LED ports and four general purpose input ports.
Data communication with the W66880CF is via a serial
interface.
FEATURES
• Flexible display modes (4 to 8 grids)
− 4 grids × 16 segments to 8 grids × 14 segments
• 6 × 4 matrix key scanning
• 8 steps dimming circuit
Functional Block
Pin Configuration
VFD CONTROLLER/DRIVER
• 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
• 44-pin plastic QFP package
APPLICATIONS
VFD display driving and panel function control
Din
Dout
CLK
STB
VDD
R
OSC
Serial
interface
OSC
Key[1:4]
4
Display memory
16 bits x 8 words
Scan Timing
Generator
key data memory
16 14
2
Data
switch
2
8
6
2
Segment
Driver Sg[1:14]
Multi-
plexed
driver
Sg[15:16]
/G[8:7]
SW1 1
SW2 2
SW3 3
SW4 4
Dout 5
Din
VSS
CLK
STB
6
7
8
9
Key1 10
Key2 11
W66880
33 G5
32 G6
31 Sg16/G7
30 Sg15/G8
29 Sg14
28 Sg13
27 VEE
26 Sg12
25 Sg11
24 Sg10
23 Sg9
4-bit input latch
4
SW[1:4]
4-bit output latch
4
LED[1:4]
Grid G[1:6]
driver
VDD VSS
VEE
Winbond Corporate Headquarters
Tel : 886-3-5790666
Fax : 886-3-5796139
Taipei Sales Office
Tel : 886-2-7190505
Fax : 886-2-7197502
Winbond Electronics North America Corp.
Tel : 1-408-9436666
Fax : 1-408-9436668
Details are subject to change without notice. All trademarks are property of their respective holders.
Apr. 1999
Winbond Electronics H.K. Ltd.
Tel : 852-27513100
Fax : 852-27552064
1 page | ||
| Páginas | Total 1 Páginas | |
| PDF Descargar | [ Datasheet W66880CF.PDF ] | |
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