LC7573N データシートの表示（PDF） - SANYO -> Panasonic

部品番号

コンポーネント説明

メーカー

LC7573N

1/2 Duty VFD Driver for Frequency Display

SANYO -> Panasonic 

LC7573N, 7573NM

Example: Segment output pin S11 is controlled as follows:

Display data

SD11

SD30

0

0

0

1

1

0

1

1

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

Share Link: