W91330ALN

W91330N SERIES TONE/PULSE DIALER WITH HANDFREE LOCK AND KEY TONE FUNCTIONS GENERAL DESCRIPTION The W91330N series are Si-gate CMOS ICs that provide the necessary signals for tone or pulse dialing. They feature one-key redial, handfree dialing, key tone, redial, and lock functions. FEATURES • • DTMF/pulse switchable dialer 32-digit redial memory (*/T) keypad for long distance call operation 5 × 4 keyboard • Pulse-to-tone • Uses • • • • • • • Easy operation with redial, flash, pause, and */T keypads Pause, pulse-to-tone (*/T) can be stored as a digit in memory 0 or 9 dialing inhibition pin for PABX system or long distance dialing lock out Off-hook delay 300 mS in lock mode ( DP will keep low for 300 mS low while off hook) First key-in delay 300 mS output in lock mode Dialing rate (10, 20 ppS ) selected by bonding option Minimum tone output duration: 93 msec. intertone pause: 93 msec. Flash break time (73, 100, 300, 600 msec.) selectable by keypad; pause time is 1.0 sec. power-on reset Uses 3.579545 MHz crystal or ceramic resonator Packaged in 18 or 20-pin plastic DIP The different dialers in the W91330N series are shown in the following table: TYPE NO. W91330N W91331N W91330AN W91331AN W91330LN W91330ALN REPLACEMENT TYPE NO. W91330 W91331 W91330A W91331A W91330L W91330AL PULSE (ppS) 10 20 10 20 10 10 FLASH (mS) 600/100/300/73 600/100/300/73 600/100/300/73 600/100/300/73 600/100/300/73 600/100/300/73 M/B Pin Pin Pin Pin Pin Pin KEY TONE Yes Yes Yes Yes HANDFREE DIALING Yes Yes Yes LOCK Yes Yes PACKAGE (PINS) 18 18 20 20 20 20 • Minimum • • On-chip • • • -1- Publication Release Date: May 1997 Revision A2 W91330N SERIES PIN CONFIGURATIONS C1 C1 C2 C3 C4 KT 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 XT DP HKS T/P MUTE HFI C2 C3 C4 KT VSS XT 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 R4 R3 R2 R1 VDD MODE DTMF DP HKS HFO W91330N/W91331N W91330AN/W91331AN C1 C1 C2 C3 C4 LOCK 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 LOCK VDD MODE DTMF XT DP HKS T/P MUTE HFI VSS XT C2 C3 C4 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 R4 R3 R2 R1 VDD MODE DTMF DP HKS HFO W91330LN W91330ALN -2- W91330N SERIES PIN DESCRIPTION SYMBOL ColumnRow Inputs 18-PIN 1−4 & 15−18 20-PIN 1−4 & 17−20 I I/O FUNCTION The keyboard inputs may be used with either the standard 5 × 4 keyboard or the inexpensive single contact (Form A) keyboard. Electronic input from a µC can also be used. A valid key-in is defined as a single row being connected to a single column. XT, XT 7, 8 7, 8 I, O 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 dialing sequence, one-key redial break, and flash break time. Otherwise, it is switched off. MODE 13 15 I Pulling mode pin to VSS places the dialer in tone mode. Pulling mode pin to VDD places the dialer in pulse mode. (10 ppS; 20 ppS for W91331N/W91331AN, M/B = 40:60) Floating mode pin places the dialer in pulse mode. (10 ppS; 20 ppS for W91331N/W91331AN, M/B = 33.3:66.7). HKS 10 12 I Hook switch input. HKS = VDD: On-hook state. Chip in sleeping mode, no operation. HKS = VSS: Off-hook state. Chip enabled for normal operation. HKS pin is pulled to VDD by internal resistor. DP 11 13 O N-channel open drain dialing pulse output. Flash key will cause DP to be active in either tone mode or pulse mode. The timing diagram for pulse mode is shown in Figure 1(a, b, c, d). VDD, VSS 14, 6 16, 6 I Power input pins. T/P MUTE 9 9 O -3- Publication Release Date: May 1997 Revision A2 W91330N SERIES Pin Description, continued SYMBOL DTMF 18-PIN 12 20-PIN 14 I/O O FUNCTION In pulse mode, this pin remains in low state at all times. In tone mode, it will output a dual or single tone. Detailed timing diagram for tone mode is shown in Figure 2(a, b, c, d). 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 HFI , HFO - 10, 11 I, O Handfree control pins. The handfree control state is toggled on by a low pulse on the HFI input pin. The status of the handfree control state is described in the following table: CURRENT STATE Hook SW. HFO Low On Hook Off Hook On Hook Off Hook Off Hook Low High High High Input HFI HFI HFI Off Hook On Hook On Hook NEXT STATE HFO High Low Low Low Low High Dialing Yes No Yes Yes No Yes HFI pin is pulled to VDD by internal resistor. Detailed timing diagrams are shown in Figure 3. KT 5 (except W91330LN) 5 (except W91330ALN) O Key-tone signal output. The key tone is generated for all valid keys. Frequency is 600 Hz and duration is 35 mS. -4- W91330N SERIES Pin Description, continued SYMBOL LOCK 18-PIN 5 (W91330LN only) 20-PIN 5 (W91330ALN only) I/O I FUNCTION The function of this terminal is to prevent "0" dialing and "9" dialing under PABX system long distance call control. When the first key input after reset is 0 or 9, all key inputs, including the 0 or 9 key, become invalid and the chip generates no output. The telephone is reinitialized by a reset. LOCK PIN Floating VDD VSS FUNCTION Normal dialing mode "0," "9" dialing inhibited "0" dialing inhibited BLOCK DIAGRAM XT XT SYSTEM CLOCK GENERATOR HKS HFI LOCK ROW (R1 to R4, Vx) KEYBOARD INTERFACE KT COLUMN (C1 to C4) LOCATION LATCH PULSE RAM CONTROL LOGIC T/P MUTE READ/WRITE COUNTER CONTROL LOGIC MODE DP HFO DTMF D/A CONVERTER ROW & COLUMN PROGRAMMABLE COUNTER DATA LATCH & DECODER -5- Publication Release Date: May 1997 Revision A2 W91330N SERIES 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: One-key redial function 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 P→T in pulse mode F1, ..., F4: Flash keys, F1 = 600 mS, F2 = 100 mS, F3 = 300 mS, F4 = 73 mS Notes: D1, ..., Dn, D1', ..., Dn': 0, ..., 9, */T, # R/P: R/P1 or R/P2. Fn: F1, ..., F4 Normal Dialing OFF HOOK (or ON HOOK & HFI ¡õ ), 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 in normal dialing. Redialing OFF HOOK Come • • (or ON HOOK , & HFI ¡õ (or ), D1 , & D2 , ..., Dn ), Busy, R/P ON HOOK OFF HOOK ON HOOK HFI ¡õ The redial memory content will be dialed out. The R/P key can execute the redial function only as the first key-in after off-hook; otherwise, it executes pause function. • If redialing length oversteps 32 digits, the redialing function will be inhibited. OFF HOOK (or ON HOOK & HFI ¡õ ), D1 , D2 , ..., Dn Busy, R • • The one-key redialing function timing diagram is shown in Figure 4. If the dialing of D1 to Dn is finished, pressing the R key will cause the pulse output pin to go low for 2.2 seconds break time and 0.6 seconds pause time will automatically be added. -6- W91330N SERIES • If the pulses of the dialed digits • D1 to Dn have not finished, R will be ignored. The redial function by R key has no break time (2.2 sec.) if it is the first key in after offhook. R/P1 or R/P2 key, • The R key uses the same redial buffer as the redial function by and it is actived during normal dialing or repertory dialing. Access Pause OFF HOOK (or ON HOOK & HFI ¡õ ), D1 , D2 , R/P , D3 , ..., Dn 1. The pause function can be stored in memory. 2. The pause function is executed in normal dialing, redial dialing, or memory dialing. 3. The pause duration of 2.0 or 3.6 seconds per pause is selected by keypad. 4. The detailed timing diagram for the pause function is shown in Figure 5. 5. Only one pause function can be released to user. Pulse-to-tone (*/T) OFF HOOK D2' , ..., (or Dn' ON HOOK & HFI ¡õ ), D1 , D2 , ..., Dn , */T , D1' , 1. If the mode switch is set to pulse mode, then the output signal will be: D1, D2, …, Dn, Pause (2.0 sec. or 3.6 sec.), D1', D2', …, Dn' (Pulse) (Tone ) If pause1 is excuted, the pause time of pulse-to-tone function is 3.6S. If pause2 is excuted, the pause time of the pulse-to-tone function is 2.0S. 2. If the mode switch is set to tone mode, then the output signal will be as follows: D1, D2, ..., Dn, *, D1', D2', ..., Dn' (Tone) (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 pulse-to-tone function timing diagram is shown in Figure 6. Flash OFF HOOK (or ON HOOK & HFI ¡õ ), Fn 1. Fn = F1, …, F4 2. The dialer will execute flash break time of 600 mS (F1), 100 mS (F2), 300 mS (F3), or 73 mS (F4) before the next digit is dialed out. In each case, the pause time is 1.0 sec. -7- Publication Release Date: May 1997 Revision A2 W91330N SERIES 3. Flash key cannot be stored as a digit in memory. The flash key has the first priority among the keyboard functions. 4. The system will return to the initial state after the flash pause time is finished. 5. The flash function timing diagram is shown in Figure 7. ABSOLUTE MAXIMUM RATINGS PARAMETER DC Supply Voltage Input/Output Voltage SYMBOL VDD−VSS VIL VIH VOL VOH Power Dissipation Operation 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 +150 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. = 3.579545 MHz, TA = 25° C, all outputs unloaded) PARAMETER Operating Voltage Operating Current Standby Current Memory Retention Current DTMF Output Voltage Pre-emphasis DTMF Distortion SYMBOL VDD IOP ISB IMR VTO CONDITIONS Tone, Unloaded Pulse, Unloaded HKS = VSS, No load & No key entry HKS = VDD, VDD = 1.0V Row group, RL = 5 KΩ Col/Row, VDD = 2.0 to 5.5V MIN. 2.0 130 1 - TYP. 0.4 0.2 150 2 -30 MAX. 5.5 0.6 0.4 15 0.2 170 3 -23 UNIT V mA µA µA mVrms dB dB THD RL = 5 KΩ, VDD = 2.0 to 5.5V -8- W91330N SERIES DC Characteristics, continued PARAMETER DTMF Output DC Level DTMF Output Sink Current DP Output Sink Current T/P MUTE Output Sink Current Key Tone Output Current HFO Drive/Sink Current Keypad Input Drive Current Keypad Input Sink Current HKS I/P Pull-High Resistor Keypad Resistance SYMBOL VTDC ITL IPL ITML IKTH IKTL IHFH IHFL IKD IKS RHK RK CONDITIONS RL = 5 KΩ, VDD = 2.0 to 5.5V VTO = 0.5V VPO = 0.5V VTMO = 0.5V VKTH = 2.0V VKTL = 0.5V VHFH = 2.0V VHFL = 0.5V VI = 0.0V VI = 2.5V - MIN. 1.0 0.2 0.5 0.5 0.5 0.5 0.5 0.5 30 200 - TYP. 400 300 - MAX. 3.0 5 UNIT V mA mA mA mA mA mA mA µA µA KΩ KΩ AC CHARACTERISTICS (VDD−VSS = 2.5V, FOSC. = 3.579545 MHz, TA = 25° C, all outputs unloaded.) PARAMETER Key-in Debounce Key Release Debounce Off-Hook Delay First Key-in Delay Pre-digit-pause1 Pre-digit-pause2 Interdigit Pause (Auto Dialing) SYMBOL TKID TKRD TOFD TFKD TPDP1 10 ppS TPDP2 20 ppS TIDP CONDITIONS Lock only Lock only Mode = VDD Mode = Floating Mode = VDD Mode = Floating 10 ppS 20 ppS MIN. - TYP. 20 20 300 300 40 33.3 20 16.7 800 500 MAX. - UNIT mS mS mS mS mS mS mS -9- Publication Release Date: May 1997 Revision A2 W91330N SERIES AC Characteristics, continued PARAMETER Make/Break Ratio Tone Output Duration Intertone Pause Flash Break Time SYMBOL M:B TTD TITP TFB CONDITIONS Mode = VDD Mode = Floating Auto dialing Auto dialing F1 F2 F3 F4 F1, F2, F3, F4 R/P1 R/P2 - MIN. - TYP. 40:60 33.3:66.7 93 93 600 100 300 73 1.0 3.6 2.0 600 35 2.2 0.6 MAX. - UNIT % mS mS mS Flash Pause Time Pause Time Key Tone Frequency Key Tone Duration One-Key Redial Break Time One-Key Redial Pause Time TFP TP FKT TKTD TRB TRP S S Hz mS S S Notes: 1. Crystal parameters suggested for proper operation are Rs < 100 Ω, 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. TIMING WAVEFORMS < 600 mS HKS < 300 mS TKRD 4 2 MB MB KEY IN DP T/P MUTE KT DTMF OSC. 3 TKID 2 TKID TIDP TIDP TPDP TIDP TPDP TIDP Low OSCILLATION OSCILLATION Figure 1(a). Normal Dialing Timing Diagram (Pulse Mode Without Lock Function) Timing Waveforms, continued - 10 - W91330N SERIES < 600 mS HKS < 300 mS TKRD 4 TKID 2 MB MB KEY IN DP T/P MUTE KT DTMF OSC. 3 TOFD 2 TKID TIDP TPDP TIDP TPDP TIDP TFKD Low OSCILLATION OSCILLATION Figure 1(b). Normal Dialing Timing Diagram (Pulse Mode with Lock Function) < 600 mS HKS TKRD KEY IN DP T/P MUTE KT DTMF OSC. Low R/P TKID MB MB TIDP TPDP TIDP TIDP OSCILLATION Figure 1(c). Auto Dialing Timing Diagram (Pulse Mode Without Lock Function) - 11 - Publication Release Date: May 1997 Revision A2 W91330N SERIES Timing Waveforms, continued < 600 mS HKS KEY IN DP T/P MUTE KT DTMF OSC. Low 300 mS R/P TKID MB MB TOFD TIDP TPDP TIDP TIDP TFKD OSCILLATION Figure 1(d). Auto Dialing Timing Diagram (Pulse Mode with Lock Function) < 600 mS HKS < 300 mS TKRD 4 2 5 2 TKID TKRD KEY IN DTMF 3 TKID TTD TITP TITP TITP TITP T/P MUTE KT DP OSC. OSCILLATION High OSCILLATION OSCILLATION Figure 2(a). Normal Dialing Timing Diagram (Tone Mode Without Lock Function) - 12 - W91330N SERIES Timing Waveforms, continued < 600 mS HKS < 300 mS TKRD 4 2 5 2 TKID KEY IN DTMF 3 TTD T/P MUTE KT DP OSC. TOFD TFKD TITP TITP TITP OSCILLATION OSCILLATION Figure 2(b). Normal Dialing Timing Diagram (Tone Mode with Lock Function) HKS KEY IN DTMF < 600 mS TKRD R/P TKID TTD T/P MUTE KT DP OSC. OSCILLATION TITP TITP Figure 2(c). Auto Dialing Timing Diagram (Tone Mode Without Lock Function) - 13 - Publication Release Date: May 1997 Revision A2 W91330N SERIES Timing Waveforms, continued < 600 mS HKS TKRD KEY IN DTMF TTD T/P MUTE 300 mS R/P TITP TITP TFKD KT TOFD DP OSC. OSCILLATION Figure 2(d). Auto Dialing Timing Diagram (Tone Mode with Lock Function) HKS HFI HFO ON HOOK T/P MUTE CHIP ENBLE High Figure 3. Handfree Dialing Timing Diagram - 14 - W91330N SERIES Timing Waveforms, continued HKS KEY IN DP < 600 mS R 300 mS R TKID TRB MB TKID MB TIDP TRP TPDP TOFD HFI HFO T/P MUTE TFKD KT DTMF OSC. TPDP TIDP Low OSCILLATION Figure 4. One-key Redial Timing Diagram (Pulse Mode) HKS KEY IN DP T/P MUTE KT DTMF OSC. < 600 mS 300 mS 2 R/P 3 TOFD TKID MB MB TIDP TPDP TP TPDP TFKD Low OSCILLATION OSCILLATION Figure 5. Pause Function Timing Diagram - 15 - Publication Release Date: May 1997 Revision A2 W91330N SERIES Timing Waveforms, continued HKS KEY IN DP T/P MUTE < 600 mS 300 mS TOFD 2 TKID MB */T 3 TPDP TP TIDP KT DTMF OSC. TFKD TITP OSCILLATION OSCILLATION Figure 6. Pulse-to-tone Timing Diagram HKS KEY IN DP F TKID Low F F 3 TFP TFB TKID TFB TKID HFI HFO T/P MUTE KT DTMF TITP OSC. OSCILLATION Figure 7. Flash Timing Diagram - 16 - W91330N SERIES Headquarters No. 4, Creation Rd. III, Science-Based Industrial Park, Hsinchu, Taiwan TEL: 886-3-5770066 FAX: 886-3-5792697 http://www.winbond.com.tw/ Voice & Fax-on-demand: 886-2-7197006 Winbond Electronics (H.K.) Ltd. Rm. 803, World Trade Square, Tower II, 123 Hoi Bun Rd., Kwun Tong, Kowloon, Hong Kong TEL: 852-27516023 FAX: 852-27552064 Winbond Electronics North America Corp. Winbond Memory Lab. Winbond Microelectronics Corp. Winbond Systems Lab. 2730 Orchard Parkway, San Jose, CA 95134, U.S.A. TEL: 1-408-9436666 FAX: 1-408-9436668 Taipei Office 11F, No. 115, Sec. 3, Min-Sheng East Rd., Taipei, Taiwan TEL: 886-2-7190505 FAX: 886-2-7197502 Note: All data and specifications are subject to change without notice. - 17 - Publication Release Date: May 1997 Revision A2