W91340AN

W91340N SERIES 10-MEMORY TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTIONS GENERAL DESCRIPTION The W91340N series are tone/pluse switchable telephone dialers with ten memories, hold function, and a handfree dialing control circuit. Fabricated using CMOS technology, the W91340N series offer good performance in low-voltage and low-power applications. FEATURES • • • • • • • • • • • • • • • • • • DTMF/pulse switchable dialer 32-digit redial memory Ten by 16-digit two-touch direct repertory memory Cascaded dialing allowed, with unlimited dialing length Pulse-to-tone (*/T) keypad for long distance call operation Uses 5 × 4 keyboard Easy operation with redial, flash, pause, and */T keypads Pause, P→T (pulse-to-tone) can be stored as a digit in memory Dialing rate (10 ppS or 20 ppS) is selectable by bonding option On-hook debounce time: 150 msec. Minimum tone output duration: 93 msec. (W91344AN: 87 mS) Minimum intertone pause: 93 msec. (W91344AN: 87 mS) Flash break time (73, 100, 300, 600 msec) selectable by keypad; pause time is 1.0 sec. Make/break ratio (40:60 or 33.3:66.7) selectable by MODE pin On-chip power-on reset Uses 3.579545 MHz crystal or ceramic resonator Packaged in 18 or 20-pin plastic DIP The different dialers in the W91340N series are shown in the following table: TYPE NO. W91340N W91342N W91340AN W91342AN W91344AN REPLACEMENT TYPE NO. W91340 W91341 W91342 W91340A W91341A W91342A New type 20 10 600/300/73/100 600/300/73/100 Pin Pin Yes Yes 20 20 20 10 600/300/73/100 600/300/73/100 Pin Pin Yes 18 20 PULSE (ppS) 10 FLASH (mS) 600/300/73/100 M/B Pin HANDFREE DIALING PACKAGE (PINS) 18 Note: The W91344AN is designed specifically for use in France. The pause time is not added in pulse-to-tone mode. -1- Publication Release Date: May 1997 Revision A2 W91340N SERIES PIN CONFIGURATIONS C1 C1 C2 C3 C4 H/P MUTE 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 C4 R1 H/P MUTE VDD MODE XT DTMF XT DP HKS HFI T/P MUTE VSS C2 C3 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 W91340N/342N W91340AN/342AN/344AN PIN DESCRIPTION SYMBOL ColumnRow Inputs 18-PIN 1−4 & 15−18 20-PIN 1−4 & 17−20 I/O I FUNCTION The keyboard inputs may be used with either a standard 5 × 4 keyboard or an inexpensive single contact (Form A) keyboard. Electronic input from a µC can also be used. A valid key 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 dialing sequence and flash break time. 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 with M/B ratio of 40:60 (10 ppS, except for W91342N/W91342AN = 20 ppS.) Floating mode pin places the dialer in pulse mode with M/B ratio of 33.3:66.7 (10 ppS, except for W91342N/W91342AN = 20 ppS.) HKS XT, XT T/P MUTE 7, 8 9 7, 8 9 I, O O MODE 13 15 I 10 12 I Hook switch input. HKS = VDD: On-hook state. Chip in sleeping mode, no operation. HKS = VSS: Off-hook state. Chip is enabled for normal operation. HKS pin is pulled to VDD by an internal resistor. -2- W91340N SERIES Pin Description, continued SYMBOL DP 18-PIN 11 20-PIN 13 I/O O FUNCTION 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). Power input pins. In pulse mode, this pin remains in low state at all times. In the tone mode, it will output a dual or single tone. Detailed timing diagram for tone mode is shown in Figure 2(a, b, c). 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 VDD, VSS DTMF 14, 6 12 16, 6 14 I O 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 an internal resistor. Detailed timing diagram is shown in Figure 3. H/P MUTE 5 5 O The H/P MUTE is a conventional inverter output. During pulse dialing, flash break or hold period, this output is active high; otherwise, it remains in low state. -3- Publication Release Date: May 1997 Revision A2 W91340N SERIES BLOCK DIAGRAM XT XT SYSTEM CLOCK GENERATOR HKS HFI ROW (R1 to R4, Vx) KEYBOARD INTERFACE COLUMN (C1 to C4) LOCATION LATCH READ / WRITE COUNTER CONTROL LOGIC MODE H/P MUTE RAM PULSE CONTROL LOGIC T/P MUTE DP HFO ROW & COLUMN PROGRAMMABLE COUNTER DTMF D/A CONVERTER DATA LATCH & DECODER FUNCTIONAL DESCRIPTION Keyboard Operation C1 1 4 7 ∗/T F1 • • • • • • C2 2 5 8 0 F2 C3 3 6 9 # F3 C4 S F4 A R/P H R1 R2 R3 R4 VX S: Store function key H: Hold function key A: Indirect repertory memory dialing function key R/P: Redial and pause function key ∗/T: ∗ in tone mode and P→T in pulse mode F1, …, F4: Flash keys, F1 = 600 mS, F2 = 300 mS, F3 = 73 mS, F4 = 100 mS Notes: D1, ..., Dn, D1', ..., Dn': 0, ..., 9, */T, # Ln: 0, ..., 9 ; Fn: F1, ..., F4 -4- W91340N SERIES 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 exceeds 32 digits in normal dialing. Redialing OFF HOOK ON HOOK , , (or ON HOOK & HFI ¡õ ON HOOK ), & D1 , D2 ), , ..., R/P Dn Busy, Come OFF HOOK , (or HFI ¡õ 1. The redial memory content will be dialed out. 2. The R/P key can execute the redial function only as the first key-in after off-hook; otherwise, it executes pause function. Number Store OFF HOOK , (or ON HOOK & HFI ¡õ ), D1 , D2 , ..., Dn ,S ,S , Ln 1. If the sequence of the dialed digits D1, D2, ..., Dn has not finished, 2. D1, D2, ..., Dn will be dialed out and stored in memory location. OFF HOOK , (or ON HOOK & HFI ¡õ ), S S will be ignored. , D1 , D2 , ..., Dn , S , Ln 3. D1, D2, ..., Dn will be stored in memory location but will not be dialed out. 4. R/P and */T keys can be stored as a digit in memory. is the pause function key. In store mode, R/P 5. The store mode is released after the store function is executed or when the state of the hook switch is changed. Repertory Dialing OFF HOOK , (or ON HOOK & HFI ¡õ ), A, Ln Access Pause OFF HOOK , (or ON HOOK & HFI ¡õ ), D1 , D2 , R/P , D3 , ..., Dn 1. The pause function can be stored as a digit in memory. Publication Release Date: May 1997 Revision A2 -5- W91340N SERIES 2. The pause function is executed in normal dialing, redial dialing, or memory dialing. 3. The detailed timing diagram for the pause function is shown in Figure 4. 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 as follows: All versions except W91344AN: D1, D2, ..., Dn, Pause (3.6 sec.), D1', D2', ..., Dn' (Pulse) (Tone ) W91344AN: D1, D2, ..., Dn, *, D1', D2', ..., Dn' (Pulse) (Tone) (Tone) 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 5(a, b). Flash OFF HOOK , (or ON HOOK & HFI ¡õ ), Fn 1. Fn = F1, ..., F4 2. The dialer will execute a flash break time of 600 mS (F1), 300 mS (F2), 73 mS (F3), or 100 mS (F4). In each case the flash pause time is 1.0 sec. before the next digit is dialed out. 3. Flash key cannot be stored as a digit in memory, and it has first priority among 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 6. Cascaded Dialing 1. 2. 3. Normal Dialing Repertory Dialing Redialing + + Repertory Dialing + Normal Dialing + + Normal Dialing + Repertory Dialing Normal Dialing Repertory Dialing Redialing is valid as first key-in only. -6- W91340N SERIES ABSOLUTE MAXIMUM RATINGS PARAMETER DC Supply Voltage Input/Output Voltage SYMBOL VDD−VSS VIL VIH VOL VOH 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 Power Dissipation Operation Temperature Storage Temperature 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 DTMF Output DC Level DTMF Output Sink Current DP Output Sink Current T/P MUTE Output Sink Current SYMBOL VDD IOP ISB IMR VTO THD VTDC ITL IPL IML 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 RL = 5 KΩ, VDD = 2.0 to 5.5V RL = 5 KΩ, VDD = 2.0 to 5.5V VTO = 0.5V VPO = 0.5V VMO = 0.5V MIN. 2.0 130 1 1.0 0.2 0.5 0.5 TYP. 0.4 0.2 150 2 -30 - MAX. 5.5 0.6 0.4 15 0.2 170 3 -23 3.0 - UNIT V mA µA µA mVrms dB dB V mA mA mA -7- Publication Release Date: May 1997 Revision A2 W91340N SERIES DC Characteristics, continued PARAMETER H/P Mute Output Drive/Sink Current HFO Drive/Sink Current Keypad Input Drive Current Keypad Input Sink Current HKS I/P Pull-high Resistor Keypad Resistance SYMBOL IHPH IHPL IHFH IHFL IKD IKS RHK RK CONDITIONS VHPH = 2.0V VHPL = 0.5V VHFH = 2.0V VHFL = 0.5V VI = 0.0V VI = 2.5V - MIN. 0.5 0.5 0.5 0.5 30 200 - TYP. 400 300 - MAX. 5.0 UNIT 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 On-hook Debounce Pre-digit Pause1 Pre-digit Pause2 Interdigit Pause (Auto Dialing) Make/Break Ratio Tone Output Duration Intertone Pause SYMBOL TKID TKRD TOHD TPDP1 10 ppS TPDP2 20 ppS TIDP M/B TTD TITP Flash Break Time TFB Flash Pause Time Pause Time TFP TP CONDITIONS Mode = VDD Mode = Floating Mode = VDD Mode = Floating 10 ppS 20 ppS Mode = VDD Mode = Floating Auto dialing W91344AN Only Auto dialing W91344AN Only F1 F2 F3 F4 F1, F2, F3, F4 R/P MIN. - TYP. 20 20 150 40 33.3 20 16.7 800 500 40:60 33.3:66.7 93 87 93 87 600 300 73 100 1.0 3.6 MAX. - UNIT mS mS mS mS mS mS % mS mS mS S S Notes: 1. Crystal parameters suggested for proper operation are Rs T OHD TPDP TIDP MB OSCILLATION Figure 1(c) Pulse Mode Auto Dialing Timing Diagram HKS TKRD KEY IN DTMF TTD T/P MUTE H/P MUTE DP OSC. OSCILLATION 3 TKID 4 2 5 TITP TITP TITP Low High OSCILLATION Figure 2(a) Tone Mode Normal Dialing Timing Diagram - 10 - W91340N SERIES Timing Waveforms, continued HKS TKRD KEY IN DTMF TTD T/P MUTE H/P MUTE Low TITP TITP R/P TKID T < T OHD DP OSC. High OSCILLATION Figure 2(b) Tone Mode Auto Dialing Timing Diagram HKS TKRD KEY IN DTMF TTD T/P MUTE H/P MUTE Low TITP R/P TKID T > TOHD DP OSC. High OSCILLATION Figure 2(c) Tone Mode Auto Dialing Timing Diagram - 11 - Publication Release Date: May 1997 Revision A2 W91340N SERIES Timing Waveforms, continued HKS 1 KEY IN 2 H H H H H MODE DP DTMF T/P MUTE H/P MUTE HFI HFO OSC Figure 3. Handfree Function Timing Diagram HKS KEY IN DP T/P MUTE H/P MUTE DTMF OSC. Low 2 R/P 3 TKID MB MB TIDP TPDP TP TPDP OSCILLATION Figure 4. Pause Function Timing Diagram - 12 - W91340N SERIES Timing Waveforms, continued HKS KEY IN DP T/P MUTE TIDP H/P MUTE DTMF OSC. OSCILLATION 2 TKID MB */T 3 TPDP TP TITP Figure 5(a). Pulse-to-tone Timing Diagram (All Versions Except W91344AN) HKS TKRD KEY IN DP T/P MUTE H/P MUTE DTMF TITP OSC. OSCILLATION 4 TKID MB */T 2 TKID TPDP TIDP TITP OSCILLATION Figure 5(b). Pulse-to-tone Timing Diagram (W91344AN Only) - 13 - Publication Release Date: May 1997 Revision A2 W91340N SERIES Timing Waveforms, continued HKS KEY IN DP F TKID Low F F 3 TFP TFB TKID TFB TFP TKID HFI HFO T/P MUTE H/P MUTE DTMF TITP OSC. OSCILLATION Figure 6. Flash Timing Diagram - 14 - W91340N 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. - 15 - Publication Release Date: May 1997 Revision A2