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 REPLACEMENT TYPE NO. W91340 PULSE (ppS) FLASH (mS) M/B HANDFREE DIALING PACKAGE (PINS) 10 600/300/73/100 Pin - 18 W91341 W91342N W91342 20 600/300/73/100 Pin - 18 W91340AN W91340A 10 600/300/73/100 Pin Yes 20 W91341A W91342AN W91342A 20 600/300/73/100 Pin Yes 20 W91344AN New type 10 600/300/73/100 Pin Yes 20 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 1 18 R4 C2 2 17 R3 C3 3 16 4 15 R1 H/P MUTE 5 14 VDD VSS 6 13 MODE XT 7 12 DTMF 8 11 9 T/P MUTE 10 1 20 R4 C2 2 19 R3 C3 3 18 R2 C4 4 17 R1 H/P MUTE 5 16 VDD VSS 6 15 MODE XT 7 14 DTMF XT 8 13 DP T/P MUTE 9 12 HKS 10 11 HFO R2 C4 XT C1 DP HKS HFI W91340N/342N W91340AN/342AN/344AN PIN DESCRIPTION SYMBOL 18-PIN 20-PIN I/O FUNCTION ColumnRow Inputs 1−4 & 15−18 1−4 & 17−20 I XT, XT 7, 8 7, 8 I, O A built-in inverter provides oscillation with an inexpensive 3.579545 MHz crystal or ceramic resonator. T/P MUTE 9 9 O 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. MODE 13 15 I Pulling mode pin to VSS places the dialer in tone mode. 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. 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 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 18-PIN 20-PIN I/O FUNCTION 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). VDD, VSS 14, 6 16, 6 I Power input pins. DTMF 12 14 O 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 HFI, HFO - 10, 11 I, O Actual Error % R1 697 699 +0.28 R2 770 766 -0.52 R3 852 848 -0.47 R4 941 948 +0.74 C1 1209 1216 +0.57 C2 1336 1332 -0.30 C3 1477 1472 -0.34 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. NEXT STATE HFO Input HFO Low HFI High Yes On Hook High HFI Low No Off Hook High HFI Low Yes Low Yes On Hook Off Hook Dialing Off Hook Low On Hook Low No Off Hook High On Hook High 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 HKS SYSTEM CLOCK GENERATOR READ / WRITE COUNTER ROW (R1 to R4, Vx) CONTROL LOGIC HFI MODE KEYBOARD INTERFACE H/P MUTE COLUMN (C1 to C4) PULSE CONTROL LOGIC RAM LOCATION LATCH T/P MUTE DP HFO DTMF ROW & COLUMN PROGRAMMABLE COUNTER D/A CONVERTER DATA LATCH & DECODER FUNCTIONAL DESCRIPTION Keyboard Operation • • • • • • C1 C2 C3 C4 1 2 3 S R1 4 5 6 F4 R2 7 8 9 A R3 ∗/T 0 # R/P R4 F1 F2 F3 H 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 OFF HOOK & , (or HFI ¡õ ), D1 , D2 , ..., ON HOOK & HFI ¡õ ), R/P Dn Busy, Come 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 , ..., 1. If the sequence of the dialed digits D1, D2, ..., Dn has not finished, S Dn , S , S , Ln will be ignored. 2. D1, D2, ..., Dn will be dialed out and stored in memory location. OFF HOOK , (or ON HOOK & HFI ¡õ ), S , 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 In store mode, keys can be stored as a digit in memory. R/P is the pause function key. 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. -5- Publication Release Date: May 1997 Revision A2 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 , (or , Dn' D2' , ..., 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. Normal Dialing + Repertory Dialing 2. Repertory Dialing 3. Redialing + + Normal Dialing Normal Dialing + + Normal Dialing + Repertory Dialing Repertory Dialing Redialing is valid as first key-in only. -6- W91340N SERIES ABSOLUTE MAXIMUM RATINGS PARAMETER DC Supply Voltage Input/Output Voltage Power Dissipation Operation Temperature SYMBOL RATING UNIT VDD−VSS VIL VIH VOL VOH PD TOPR -0.3 to +7.0 V VSS -0.3 VDD +0.3 VSS -0.3 VDD +0.3 120 -20 to +70 V V V V mW TSTG -55 to +150 °C Storage Temperature °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 SYMBOL CONDITIONS Operating Voltage Operating Current VDD IOP Tone, Unloaded Pulse, Unloaded Standby Current ISB HKS = VSS, No load & No key entry Memory Retention Current IMR DTMF Output Voltage VTO HKS = VDD, VDD = 1.0V Row group, RL = 5 KΩ Col/Row, VDD = 2.0 to 5.5V Pre-emphasis - MIN. TYP. MAX. UNIT 2.0 - 0.4 0.2 - 5.5 0.6 0.4 15 V mA - - 0.2 µA 130 150 170 mVrms 1 2 3 dB µA DTMF Distortion THD RL = 5 KΩ, VDD = 2.0 to 5.5V - -30 -23 dB DTMF Output DC Level VTDC 1.0 - 3.0 V ITL IPL RL = 5 KΩ, VDD = 2.0 to 5.5V VTO = 0.5V VPO = 0.5V 0.2 0.5 - - mA mA IML VMO = 0.5V 0.5 - - mA DTMF Output Sink Current DP Output Sink Current T/P MUTE Output Sink Current -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 SYMBOL IHPH IHPL IHFH IHFL IKD CONDITIONS VHPH = 2.0V VHPL = 0.5V VHFH = 2.0V VHFL = 0.5V VI = 0.0V MIN. 0.5 0.5 0.5 0.5 30 TYP. - MAX. - UNIT mA mA mA mA Keypad Input Sink Current IKS VI = 2.5V 200 400 - HKS I/P Pull-high Resistor Keypad Resistance RHK - - 300 - KΩ µA RK - - - 5.0 KΩ MAX. - UNIT mS mS mS mS µA 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 SYMBOL TKID TKRD TOHD TPDP1 10 ppS TPDP2 20 ppS TIDP M/B Tone Output Duration TTD Intertone Pause 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 mS % mS mS mS - 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. -8- mS S S W91340N SERIES TIMING WAVEFORMS HKS TKRD KEY IN 3 4 2 2 TKID DP TKID TIDP MB TIDP MB TIDP TPDP TPDP T/P MUTE TIDP H/P MUTE DTMF Low OSC. OSCILLATION OSCILLATION Figure 1(a). Normal Dialing Timing Diagram HKS T < T OHD TKRD KEY IN DP R/P TKID MB TPDP TIDP M B TIDP TIDP T/P MUTE H/P MUTE DTMF Low OSC. OSCILLATION Figure 1(b) Pulse Mode Auto Dialing Timing Diagram -9- Publication Release Date: May 1997 Revision A2 W91340N SERIES Timing Waveforms, continued HKS T > T OHD TKRD R/P TKID KEY IN DP M B TIDP TPDP M B T/P MUTE H/P MUTE DTMF Low OSC. OSCILLATION Figure 1(c) Pulse Mode Auto Dialing Timing Diagram HKS TKRD KEY IN 3 4 5 2 TKID DTMF TTD TITP TITP TITP T/P MUTE Low H/P MUTE DP OSC. High OSCILLATION OSCILLATION Figure 2(a) Tone Mode Normal Dialing Timing Diagram - 10 - W91340N SERIES Timing Waveforms, continued HKS T < T OHD TKRD KEY IN R/P TKID DTMF TTD TITP TITP T/P MUTE Low H/P MUTE DP High OSC. OSCILLATION Figure 2(b) Tone Mode Auto Dialing Timing Diagram HKS T > TOHD TKRD KEY IN R/P TKID DTMF TTD TITP T/P MUTE H/P MUTE DP OSC. Low 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 2 H H H H H KEY IN MODE DP DTMF T/P MUTE H/P MUTE HFI HFO OSC Figure 3. Handfree Function Timing Diagram HKS KEY IN 2 R/P 3 TKID DP TIDP MB MB TPDP T/P MUTE TPDP TP H/P MUTE DTMF OSC. Low OSCILLATION Figure 4. Pause Function Timing Diagram - 12 - W91340N SERIES Timing Waveforms, continued HKS KEY IN DP 2 TKID */T 3 MB TPDP TP T/P MUTE TIDP TITP H/P MUTE DTMF OSC. OSCILLATION Figure 5(a). Pulse-to-tone Timing Diagram (All Versions Except W91344AN) HKS TKRD KEY IN DP 4 TKID MB TPDP */T 2 TKID TIDP T/P MUTE H/P MUTE DTMF TITP OSC. OSCILLATION 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 Low F TKID F DP TFP TFP TFB 3 F TKID TKID HFI TFB HFO T/P MUTE H/P MUTE DTMF TITP OSC. OSCILLATION Figure 6. Flash Timing Diagram - 14 - W91340N SERIES Headquarters Winbond Electronics (H.K.) Ltd. 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 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