HT1611C

HT1611C Timer with Dialer Interface Features · Operating voltage: 1.2V~1.7V · Low operating current: 3mA (typ.) · Dialing number and conversation time display · Conversation timer (59 mins and 59 secs max.) · 8 or 10-digit LCD display driver; 3V,1/2 bias, 1/3 duty Patent Number: 84545 (R.O.C.) Patent Pending: 08/214, 079 (U.S.A.) · Real time clock with stopwatch · Built-in dialer interface · 12-hour or 24-hour format · Two-button sequential operation for real time clock setting (8-digit hand-held calculator LCD used for 8-digit applications) · Uses 32768Hz crystal Applications · Timers, clocks, watches · LCD display drivers · Telephone display interface · Instrument display General Description The HT1611C is a CMOS chip designed for dialer interfaces driving 8 or 10-digit LCDs. Various functions, such as real time clock, dialing number and conversation time display are provided. The real time is displayed by default. When answering a telephone call, the timer is activated to tell users how long the conversation has taken. After the telephone is hung up, the total conversation time is shown for about 5 seconds and then the real time is displayed again. When making a phone call, the HT1611C receives the dialing data from the dialer and displays the phone number from left to right on the LCD. However, if there is no dialing action within 10 seconds, it restarts the timer again. By adding a TIMER key, the HT1611C can provide a stopwatch function and timer reset/hold functio...