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PDF W66881CF Data sheet ( Hoja de datos )
| Número de pieza | W66881CF | |
| Descripción | VFD CONTROLLER/DRIVER | |
| Fabricantes | Winbond | |
| Logotipo |  |
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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
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]
Multi-
plexed
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
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 G6
35 Sg20/G7
34 Sg19/G8
33 Sg18
32 Sg17
31 Sg16
30 Sg15
29 Sg14
28 Sg13
27
V
EE
26 Sg12
25 Sg11
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.
Winbond Electronics H.K. Ltd.
Tel : 852-27513100
Fax : 852-27552064
Apr. 1999
1 page | ||
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| PDF Descargar | [ Datasheet W66881CF.PDF ] | |
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