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| Preliminary W91312N TONE/PULSE DIALER WITH REDIAL FUNCTION GENERAL DESCRIPTION The W91312N are monolithic ICs that provide the necessary signals for either pulse or tone dialing. The W91312 N feature a redial memory. FEATURES * * * * * * * * * * * * * DTMF/Pulse switchable dialer 32 digits for redial memory Pulse-to-tone (PT) keypad for long distance call operation Break/Make ratio is selectable by pin option Uses 4 x 4 keyboard Easy operation with redial, flash, pause, and PT keypads Pause, PT (pulse-to-tone) can be stored as a digit in memory Minimum tone output duration: 93 mS Minimum intertone pause: 93 mS On-chip power-on reset Uses 3.579545 MHz crystal or ceramic resonator Packaged in 18-pin plastic DIP The different dialers in the W91310 series are shown in the following table: TYPE NO. W91312N PULSE (ppS) 10/20 FLASH (mS) 600/100/300/73 FLASH PAUSE (S) 1.0 PAUSE (S) 3.6/2.0 PIN CONFIGURATION C1 C2 C3 C4 B/M VSS XT XT T/P MUTE 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 R4 R3 R2 R1 VDD MODE DTMF DP HKS -1- Publication Release Date: May 2000 Revision A1 Preliminary W91312N PIN DESCRIPTION SYMBOL ColumnRow Inputs PIN 1-4 & 15-18 7, 8 9 I/O I FUNCTION The keyboard input may be from either the standard 4 x 4 keyboard or an inexpensive single contact (form A) keyboard. Electronic input from a C can also be used. A valid key entry is defined as a single row being connected to a single column. A built-in inverter provides oscillation with an inexpensive 3.579545 MHz crystal or ceramic resonator. The T/P MUTE is a conventional CMOS N-channel open drain output. The output transistor is switched on during pulse and tone mode dialing sequence and flash break. Otherwise, it is switched off. Pulling mode pin to VSS places the dialer in tone mode. Pulling mode pin to VDD places the dialer in pulse mode (10 ppS). Leaving mode pin floating places the dialer in pulse mode (20 ppS). Hook switch input. HKS = 1: On-hook state. Chip in sleeping mode, no operation. HKS = 0: Off-hook state. Chip enabled for normal operation. The HKS pin is pulled to VDD by an internal resistor. N-channel open drain dialing pulse output (Figure 1). Flash key will cause DP to go active in both pulse mode and tone mode. In pulse mode, remains in low state at all times. In tone mode, outputs a dual or single tone. Detailed timing diagram for tone mode is shown in Figure 2(a, b). OUTPUT FREQUENCY Specified R1 R2 R3 R4 C1 C2 C3 697 770 852 941 1209 1336 1477 Actual 699 766 848 948 1216 1332 1472 Error % +0.28 -0.52 -0.47 +0.74 +0.57 -0.30 -0.34 XT, XT T/P MUTE I, O O MODE 13 I HKS 10 I DP 11 12 O O DTMF VDD, VSS B/M 14, 6 5 I I Power input pins. The break make ratio is 60:40 if B/M = 1 and is 66.6:33.3 if B/M = 0. This pin has no function in DTMF mode. -2- Preliminary W91312N BLOCK DIAGRAM XT XT HKS B/M MODE SYSTEM CLOCK GENERATION READ/WRITE COUNTER ROW (R1 to R4) KEYBOARD INTERFACE RAM CONTROL LOGIC PULSE CONTROL LOGIC T/P MUTE DP COLUMN (C1 to C4) LOCATION LATCH DTMF D/A CONVERTER ROW & COLUMN PROGRAMMABLE COUNTER DATA LATCH & DECODER FUNCTIONAL DESCRIPTION Keyboard Operation C1 1 4 7 /T R/P2 * * * * C2 2 5 8 0 R C3 3 6 9 # F3 C4 R1 F1 F2 R/P1 F4 R2 R3 R4 VX R/P1, R/P2: Redial and pause function key, P1 is 3.6 sec. and P2 is 2.0 sec. /T: in tone mode and PT in pulse mode F1, ..., F4: Flash keys, the flash break time of F1 = 600 mS, F2 = 100 mS, F3 = 300 mS, F4 = 73 mS R: One-key redial function R/P: R/P1 or R/P2. Fn: F1, ..., F4 Notes: D1, ..., Dn, D1', ..., Dn': 0, ..., 9, */T, # -3- Publication Release Date: May 2000 Revision A1 Preliminary W91312N Normal Dialing OFF HOOK , D1 , D2 , ..., Dn 1. D1, D2, ..., Dn will be dialed out. 2. Dialing length is unlimited, but redial is inhibited if length oversteps 32 digits. Redialing OFF HOOK The R/P , D1 , D2 , ..., Dn BUSY, COME ON HOOK , OFF HOOK , R/P key can execute redial function only as the first key-in after off-hook; otherwise, it will execute pause function. Access Pause OFF HOOK , D1 , D2 , R/P , D3 , ..., Dn 1. The pause function can be stored in memory. 2. The pause function is executed in normal dialing or memory dialing. 3. The pause function timing diagram is shown in Figure 3. Pulse-to-tone (*/T) OFF HOOK , D1 , D2 , ..., Dn , */T , D1' , D2' , ..., Dn' 1. If the mode switch is set to pulse mode, then the output signal will be: D1, D2, ..., Dn, Pause, D1', D2', ..., Dn' (Pulse) (Tone) 2. If the mode switch is set to tone mode, then the output signal will be: D1, D2, ..., Dn, (Tone) */T (Pause) D1, D2, ..., Dn, (Tone) 3. The dialer remains in tone mode when the digits have been dialed out and can be reset to pulse mode only by going on-hook. 4. The PT function timing diagram is shown in Figure 4. Flash OFF HOOK , F 1. Flash key can't be stored as a digit in memory. 2. The system will return to the initial state after the break time is finished. 3. The flash function timing diagram is shown in Figure 5. -4- Preliminary W91312N ABSOLUTE MAXIMUM RATINGS PARAMETER DC Supply Voltage Input/Output Voltage SYMBOL VDD-VSS VIL VIH VOL VOH Power Dissipation Operating Temperature Storage Temperature PD TOPR TSTG RATING -0.3 to +7.0 VSS -0.3 VDD +0.3 VSS -0.3 VDD +0.3 120 -20 to +70 -55 to +125 UNIT V V V V V mW C C Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device. DC CHARACTERISTICS (VDD-VSS = 2.5V, Fosc. = 3.58 MHz, TA = 25 C, all outputs unloaded) PARAMETER Operating Voltage Operating Current Standby Current Memory Retention Current DTMF Output Voltage Pre-emphasis DTMF Distortion DTMF Output DC Level DTMF Output Sink Current DP Output Sink Current T/P MUTE Output Sink Current HKS I/P Pull-high Resistor SYM. VDD IOP ISB IMR VTO THD VTDC ITL IPL IML RKH Tone Pulse CONDITIONS MIN. 2.0 130 1 1.0 0.2 0.5 0.5 - TYP. 0.3 0.15 150 2 -30 300 MAX. 5.5 0.5 0.3 15 0.2 170 3 -23 3.0 - UNIT V mA mA A A mVrms dB dB V mA mA mA K HKS = 0, No load, & No key entry HKS = 1, VDD = 1.0V Row group, RL = 5 K Col/Row, VDD = 2.0 to 5.5V RL = 5 K, VDD = 2.0 to 5.5V RL = 5 K, VDD = 2.0 to 5.5V VTO = 0.5V VPO = 0.5V VMO = 0.5V -5- Publication Release Date: May 2000 Revision A1 Preliminary W91312N DC Characteristics, continued PARAMETER Keypad Input Drive Current Keypad Input Sink Current Keypad Resistance SYMBOL IKD IKS CONDITIONS VI = 0V VI = 2.5V MIN. 30 200 - TYP. 400 - MAX. 5.0 UNIT A A K AC CHARACTERISTICS PARAMETER Keypad Active in Debounce Key Release Debounce Pre-digit Pre-digit Pause1 Pause2 SYMBOL TKID TKRD TPDP1 10 ppS TPDP2 20 ppS Interdigit Pause (Auto dialing) Make/Break Ratio DTMF Output Duration Intertone Pause Flash Break Time TIDP B/M = 1 B/M = 0 B/M = 1 B/M = 0 10 ppS 20 ppS M/B TTD TITP TFB B/M = 1 B/M = 0 Auto Dialing Auto Dialing F1 F2 F3 F4 Flash Pause Time Pause Time TFP TP Pause 1 Pause 2 Notes: 1. Crystal parameters suggested for proper operation are Rs < 100 , Lm = 96 mH, Cm = 0.02 pF, Cn = 5 pF, Cl = 18 pF, FOSC. = 3.579545 MHz 0.02%. 2. Crystal oscillator accuracy directly affects these times. CONDITIONS MIN. - TYP. 20 20 40 33.3 20 16.7 800 500 40:60 33:67 100 100 600 100 300 73 1.0 3.6 2.0 MAX. - UNIT mS mS mS mS mS % mS mS mS - S S -6- Preliminary W91312N TIMING WAVEFORMS HKS KEY IN 4 TKID 2 2 B DP TPDP M TIDP TIDP TIDP T/P MUTE DTMF LOW OSC. OSCILLATION NORMAL DIALING OSCILLATION Figure 1(a). Pulse Mode Timing Diagram HKS KEY IN R/P DP B PDP TIDP TIDP TIDP T/P MUTE LOW DTMF OSC. ON HOOK OSCILLATION AUTO DIALING Figure 1(b). Pulse Mode Timing Diagram -7- Publication Release Date: May 2000 Revision A1 Preliminary W91312N TIming Waveforms, continued HKS KID TKRD KRD TKID TITP DTMF TTD TITP TITP T/P MUTE HIGH OSC. OSCILLATION NORMAL DIALING Figure 2(a). Tone Mode Timing Diagram HKS KEY IN KID TTD T ITP T/P MUTE T ITP DP OSC. OSCILLATION Figure 2(b). Tone Mode Auto Dialing Timing Diagram -8- Preliminary W91312N TIming Waveforms, continued HKS KEY IN 4 TKID 2 R/P 2 DP B PDP M T IDP B TIDP B M TIDP T/P MUTE DTMF LOW TP OSC. OSCILLATION Figure 3. Pause Function Timing Dragram HKS KEY IN 4 TKID 2 */T 8 DP B TPDP M TIDP B M TIDP T/P MUTE DTMF TP OSC. OSCILLATION Figure 4. Pulse-to-tone Function Timing Dragram -9- Publication Release Date: May 2000 Revision A1 Preliminary W91312N TIming Waveforms, continued HKS KEY IN DP TKID F Low F F 3 TFP TFB TKID T/P MUTE DTMF TITP OSC. OSCILLATION Figure 5. Flash Function Timing Diagram Headquarters Winbond Electronics (H.K.) Ltd. Unit 9-15, 22F, Millennium City, No. 4, Creation Rd. III, No. 378 Kwun Tong Rd; Science-Based Industrial Park, Kowloon, Hong Kong Hsinchu, Taiwan TEL: 852-27513100 TEL: 886-3-5770066 FAX: 852-27552064 FAX: 886-3-5792766 http://www.winbond.com.tw/ Voice & Fax-on-demand: 886 -2-27197006 Winbond Electronics North America Corp. Winbond Memory Lab. Winbond Microelectronics Corp. Winbond Systems Lab. 2727 N. First Street, San Jose, CA 95134, U.S.A. TEL: 408-9436666 FAX: 408-5441798 Taipei Office 11F, No. 115, Sec. 3, Min -Sheng East Rd., Taipei, Taiwan TEL: 886-2-27190505 FAX: 886-2-27197502 Note: All data and specifications are subject to change withou t notice. - 10 - TYPICAL APPLICATION CIRCUIT TIP D1-D4 1N4004 VR1 250V R5 10M Q1 A94 R3 33K R6 3K D7 1N4148 RING ON HOOK OFF HOOK R4 3K3 D5 R1 200K Q2 A42 C1 100uF D8 5V1 SPEECH NETWORK 1N4148 R9 470K R7 1M R10 10K Q4 C1815 R11 75 R8 300K Q3 9013 C10 0.1uF C4 4u7 VDD PULSE TONE 1 4 7 */T VxR5 R/P2 2 5 8 0 R 3 6 9 # F3 F1 F2 R/P1 F4 C1 C2 R4 R3 R2 R1 VDD MODE DP DTMF HKS W91312N VDD C3 C4 B/M VSS XT X1 C5 30P 3.58MHz C6 30P XT T/P MUTE VDD R18 22K Q7 9013 |
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