NT93401-04

NT93401-04 High Feature Phone LSI Features T High feature phone LSI based on a CMOS 4-bit single chip microcomputer with 4096 x 10 bit ROM and 1024 x 4 bit RAM capacity T Built-in DTMF generator and on-chip pulse dialer T Bank key function T 30 or 40 memory locations by pin selection T Auto-start watch T Restriction dialing T If RESENABL pin is logic low, the restriction number 0 is given T Chain dialing T Manual dial as many digits as entered T Redial function (up to 48 digits) T One touch auto dialing (up to 30/40 locations and up to 24/18 digits each) T Abbreviated auto dialing (up to 30/40 locations and up to 24/18 digits each) T Mixture of one touch and abbreviated auto dialing (use the same memory space) T Switchable tone and pulse dialing T Dial speed of 10 pps T Low battery power detect input T Make/Break ratio of 40/60 or 33/67 (pin selectable) T Speaker phone control output T Key-in tone output T Bank, auto redial, store, alarm, AM, PM, low battery hold, and speaker indicators are assigned to their corresponding LCD display dots T Manual HOLD key controls HOLDOUT and HOLD LED signal. The HOLDOUT can be reset by HOLDIN pin T Manual mute key controls T T T T T T T T T T T T XMUTE or MUTE signal. When mute is active, the speaker indicator is flashing Programmable pause time from 1 to 5 seconds. (1 sec resolution) Initial pause time is pin selectable (2 or 4 seconds) Programmable flash time from 90 to 900 msec. (100 msec resolution) Initial flash time is pin select...