HT1612 - Holtek Semiconductor

HT1612 Timer

The HT1612 is a CMOS chip designed for dialer interface which drives 8 or 10 digits LCD. Various functions, such as displaying dialing number and conversation time, are provided. It normally shows blanks. The timer is started to tell users how long the conversation time has been taken when answering a telephone call. After hanging up the telephone, it return.

Features

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• Operating voltage: 1.2V~1.7V Dialing number and conversation time display Conversation timer (Max. to 59 mins and 59 secs) Operation current: 10µA (Typ.)
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• 32768Hz crystal 8 or 10 digits LCD display driver, 3V, 1/2 bias, 1/3 duty (8 digits hand-held calculator LCD is used for 8 digits application) Built-in dialer interface Applications
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• Timers LCD display drivers
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• Telephone display interface Instrument display General Description The HT1612 is a CMOS chip designed for dialer interface which drives 8 or 10 digits LCD. Various functions, such as displaying dialing numb.