NT91315XL

( DataSheet : www.DataSheet4U.com ) NT91315XL Series PRELIMINARY Microcontroller for Monitor Features n n n n n n n n n n Tone/Pulse switchable 32-digit redial memory 32-digit save memory (DL version) 3 emergency memory banks (16 digits each) 10 indirect memory banks (16 digits each) Flash, Pause, P→T can be saved as a digit in memory Chain dialing allowed None or (0) or (0, 9) or (0, 168) or all digits dialing inhibition (diode option) for PABX system or long distance dialing lock out Pause time 2.2/3.6 sec selectable (diode option) 3 pulse dialing number systems N/N+1/10-N (diode option) n Dialing rate 10pps, M/B ratio 2/3 & 1/2 selectable/dialing rate 10pps & 20pps selectable, M/B ratio 1/2 (diode option) n Hands-Free control function with debouncing (BL, CL & DL version) n Hold function with debouncing (CL & DL version) n Key-tone output for dialing access (DL version) n One-key redial (DL version) n Flash time 600ms, 300ms, 100ms (DL version) n Power-up reset circuit provided n Key release debouncing n 32-step synthetic tone output for low DTMF output harmonic distortion n 16/18/20/22-pin packages General Description The NT91315XL series are single-chip silicon gate CMOS integrated circuits with on-chip oscillators to be used with a 3.58 MHz crystal or ceramic resonator. They provide dialing pulse (DP) or dual tone multi-frequency (DTMF) dialing. A 24-key (5x5-1) matrix keyboard is used for either DP or DTMF mode. In on-chip RAM, up to 32 digits can be saved for both...