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LC7573NのメーカーはSanyo Semicon Deviceです、この部品の機能は「1/2 Duty VFD Driver for Frequency Display」です。 |
部品番号 | LC7573N |
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部品説明 | 1/2 Duty VFD Driver for Frequency Display | ||
メーカ | Sanyo Semicon Device | ||
ロゴ | |||
このページの下部にプレビューとLC7573Nダウンロード(pdfファイル)リンクがあります。 Total 10 pages
Ordering number : EN*3587B
CMOS LSI
LC7573N, 7573NM
1/2 Duty VFD Driver for Frequency Display
Preliminary
Overview
The LC7573N and LC7573NM are 1/2 duty VFD drivers
that can be used for electronic tuning frequency display
and other applications under the control of a controller.
These products can directly drive VFDs with up to 38
segments.
Features
• 38 segment outputs
• Noise reduction circuits are built into the output drivers.
• Serial data input supports CCB* format
communications with the system controller.
• Switching between digital and analog dimmers under
serial data control
• High generality since display data is displayed without
the intervention of a decoder
• All segments can be turned off with the BLK pin
Package Dimensions
unit: mm
3061-DIP30S
[LC7573N]
• CCB is a trademark of SANYO ELECTRIC CO., LTD.
• CCB is SANYO’s original bus format and all the bus
addresses are controlled by SANYO.
unit: mm
3073A-MFP30S
Pin Assignment
[LC7573NM]
SANYO: DIP30S
SANYO: MFP30S
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
O2095HA (OT)/3242JN No.3587-1/10
1 Page 1. When CL is stopped at the low level
LC7573N, 7573NM
2. When CL is stopped at the high level
Block Diagram
Figure 1
No. 3587-3/10
3Pages LC7573N, 7573NM
Example: Segment output pin S11 is controlled as follows:
Display data
SD11
SD30
00
01
10
11
Segment output pin S11 state
The segments corresponding to both the G1 and G2 digit output pins are off.
The segment corresponding to the G2 digit output pin is on.
The segment corresponding to the G1 digit output pin is on.
The segments corresponding to both the G1 and G2 digit output pins are on.
BLK and the Display Control
Since the LSI internal data (SD1 to SD38 and the control data) is undefined when power is first applied, the display is
off (G1 and G2 = low) by setting the BLK pin low at the same time as power is applied. Then, meaningless display at
power on can be prevented by transferring all 56 bits of serial data from the controller while the display is off and setting
BLK pin high after the transfer completes. (See Figure 3.)
Power Supply Sequence
The following sequences must be observed when power is turned on and off. (See Figure 3.)
• Power on: Logic block power supply (VDD) on → Driver block power supply (VFL) on
• Power off: Driver block power supply (VFL) off → Logic block power supply (VDD) off
Figure 3
No. 3587-6/10
6 Page | |||
ページ | 合計 : 10 ページ | ||
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PDF ダウンロード | [ LC7573N データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
LC7573 | Electronic Volume Control System for Audio Equipment | Sanyo Semicon Device |
LC7573N | 1/2 Duty VFD Driver for Frequency Display | Sanyo Semicon Device |
LC7573N | Electronic Volume Control System for Audio Equipment | Sanyo Semicon Device |
LC7573NM | 1/2 Duty VFD Driver for Frequency Display | Sanyo Semicon Device |