HT1330 Просмотр технического описания (PDF) - Holtek Semiconductor

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производитель

HT1330

3 1/2 Digit Timer + Watch

Holtek Semiconductor 

Once the set time is reached, the alarm will

sound 60 seconds unless it is stopped by users

(by pressing S3), in which case the preset time

of the timer will remain unchanged or at 0:00

depending on the status of the option pin.

Pressing any one of the inputs (S1 or S2 or S3)

will stop the alarm during the period for which

the alarm is sounding.

HT1330

At 0:00 in the timer mode, the alarm will sound

when S1 and S2 are simultaneously depressed.

This is for the alarm test only.

After the device is powered on, the alarm will

sound two seconds and all segments on the LCD

display panel be illuminated.

Output Waveform

1 0 m in u te s b e fo r e s e t tim e is u p

6 2 .5 m s

0 sec

1 sec

5 m in u te s b e fo r e s e t tim e is u p

6 2 .5 m s

2 sec

6 2 .5 m s

0 sec

T im e is u p

6 2 .5 m s

0 sec

T im e r b u s y fla g o u tp u t

VDD

VSS

1 sec

1 sec

6 2 .5 m s

T im e r is c o u n tin g u p o r d o w n

2 sec

60 sec

5

August 10, 2000

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