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參數資料

LC5645N

No.1433–6/10

Others

1. Zero blanking .............. Unnecessary 0’s are unlighted.

Unlighted content ....... The 10’s digit of month, date, hours is zero-blanked.

Lighted content ........... 0 in the 10’s digit of minutes, seconds is lighted.

2. Switch input voltage

The INPUT pin contains a floating preventing resistor. VDD is applied to this pin to start operation.

3. 24/12-hour operation mode select

For the 12-hour operation mode, the 24H/12H pin is not bonded. For the 24-hour operation mode, this pin is

bonded.

4. Setting pulse

Each time SW1 is pushed in each setting mode, the display contents are incremented +1. Holding SW1 pushed

causes fast advance at a 4Hz rate to start approximately 1 second later.

5. Switch chattering preventer

Chattering of 30ms or less is prevented. (More than 30ms is considered to be bounding.)

6. Step-up circuit

Two capacitors (0.1

F) are connected externally. The step-up frequency is 512Hz.

7. Initial clear

The circuit is built in. The initial mode can be also entered by pushing SW1 and SW2 simultaneously.

8. LCD output alternating frequency .... 32Hz

Supply current

Unit (capacitance : F)

(Note) Pins not entered are all open.

≤25k

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