NT91315DL

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 redial and save functions, and up to 16 digits can be saved for 3 direct emergency and 10 indirect dialing memory banks. In DTMF mode, a small minimum tone duration and minimum inter-tone pause allows for rapid dialing. Maximum tone duration depends on the key depression time in manual dialing. Pin Configurations a. NT91315AL b. NT91315BL c. NT91315CL d. NT91315DL 1 NT91315XL Series Keyboard Assignments C1 R1 R2 R3 R4 C2 C3 GND ST A/L F1 RD/P C4 1 4 7 */T M1 2 5 8 0 M2 3 6 9 # M3 RD P F2 F3 SAVE VDD D COL1 COL2 SW12 D2 IN4148 D3 IN4148 COL3 SW13 Flash time, F1: 600ms( default ), F2: 300ms, F3: 100ms Diode options (switch closed): D1. Lock 0 D2. Pause time 2.2sec D3. Flash time 300ms for F1 D4. Lock 0, 9 D5. Pulse dialing 10-N D6. Pulse dialing N+1 D7. Lock 0, 168 D8. Flash time 100ms for F1 D9. Dialing rate 10pps & 20pps selectable, M/B ratio 1/2 D10. Lock all digits SW11 D1 IN4148 ROW1 SW14 D4 IN4148 ROW2 SW17 D7 IN4148 ROW3 SW20 D10 IN4148 ROW4 D8 IN4148 D5 IN4148 SW15 D6 IN4148 SW18 D9 IN4148 SW16 SW19 2 NT91315XL Series Block Diagram DIALING BUFFER R1 : R4 KEYBOARD DECODER C1 : C4 REDIAL BUFFER DP SAVE MEMORY DIALING LOGIC XUMTE MEMORIES DTMF GENERATOR TONE MODE IN HFI INPUTS HK HDI CONTROL LOGIC TIMING GENERATOR OSCI OSOO KT HFO HDO 3 NT91315XL Series * Comments Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only. Functional operation of this device at these or any other conditions above those indicated in the operational sections of this specification is not implied and exposure to absolute maximum rating conditions for extended periods may affect device reliability. Absolute Maximum Ratings* Supply Voltage (VDD) . . . . . . . . . . . . . .-0.3V to +6.0V Input Voltage (VIN) . . . . . .. . . . VSS - 0.3V to VDD + 0.3V Output Voltage (VOUT) . . . . . . .VSS - 0.3V to VDD + 0.3V Output Voltage (VOUT)( DP , XMUTE ) . . . . . . . . .