W91473AL

W91473 SERIES 14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTIONS GENERAL DESCRIPTION The W91473 series are Si-gate CMOS IC tone/pulse switchable dialers containing a 14-channel automatic dialing memory, including a 16-digit × 3 emergency dialing memory and a 16-digit × 10 channel repertory memory that provides a 32-digit mercury memory. These dialers also provide flash, clear, hold, lock, and one-key redial functions. FEATURES • • • • • • • • • • • • • DTMF/Pulse switchable dialer 32-digit LNB (last number buffer) memory 32-digit mercury memory 16-digit × 3 one-touch direct repertory memory 16-digit × 10 direct repertory memory Uses 7 × 5 keyboard Flash time: 98 mS, 305 mS, or 600 mS (selectable by keypad option) 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 22, 24, or 28-pin plastic DIP The different dialers in the W91473 series are shown in the following table: TYPE NO. W91473 W91473L W91473A W91473AL W91473B W91473BL W91473C W91473CL W91473D W91473DL PULSE (ppS) 10 10 10 10 10/20 10/20 10/20 10/20 10 10 MEMORY 14 14 14 14 14 14 14 14 14 14 MERCURY MEMORY Yes Yes Yes Yes Save Memory Save Memory Save Memory Save Memory HOLD Yes Yes Yes Yes Yes Yes HANDFREE Yes Yes Yes Yes Yes Yes LOCK Yes Yes Yes Yes Yes PACKAGE 22 22 24 24 28 28 28 28 22 22 -1- Publication Release Date: February 1995 Revision A3 W91473 SERIES PIN CONFIGURATIONS C1 C2 C3 C4 C5 C6 C7 NC KT VSS XT XT T/P MUTE HFI 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 R5 R4 R3 R2 R1 HPM MUTE NC DRS VDD MODE DTMF DP HKS HFO C1 C1 C2 C3 C4 C5 C6 C7 VSS XT XT T/P MUTE 1 2 3 4 5 6 7 8 9 10 11 22 21 20 19 18 17 16 15 14 13 12 R5 R4 R3 R2 R1 HPM MUTE VDD MODE DTMF DP HKS C2 C3 C4 C5 C6 C7 VSS XT XT T/P MUTE HFI 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 R5 R4 R3 R2 R1 HPM MUTE VDD MODE DTMF DP HKS HFO W91473/D W91473A W91473B/C C1 C2 C3 C4 C5 C6 C7 NC KT VSS XT XT T/P MUTE HFI 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 R5 R4 R3 R2 R1 HPM MUTE LOCK DRS VDD MODE DTMF DP HKS HFO C1 C1 C2 C3 C4 C5 C6 C7 VSS XT XT T/P MUTE 1 2 3 4 5 6 7 8 9 10 11 22 21 20 19 18 17 16 15 14 13 12 R5 R4 R3 R2 R1 LOCK VDD MODE DTMF DP HKS C2 C3 C4 C5 C6 C7 VSS XT XT T/P MUTE HFI 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 R5 R4 R3 R2 R1 LOCK VDD MODE DTMF DP HKS HFO W91473L/DL W91473AL W91473BL/CL -2- W91473 SERIES PIN DESCRIPTION SYMBOL ColumnRow Inputs 22-PIN 1−7 & 18−22 24-PIN 1−7 & 20−24 28-PIN 1−8 & 24−28 I/O I FUNCTION The keyboard input may be used with either the standard 7 × 5 keyboard or an inexpensive single contact (form A) keyboard. Electronic input with µC can also be used. A valid key entry is defined by 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. N-channel open drain dialing pulse output (Figure 1). Flash key causes DP to go active when in pulse mode and tone mode. Pulling mode pin to VSS places the dialer in tone mode. Pulling mode pin to VDD places the dialer in pulse mode (10 ppS, M/B = 2:3). Leaving mode pin floating places the dialer in pulse mode (10 ppS, M/B = 1:2). Hook switch input. HKS = 1: On-hook state. Chip in sleep mode, no operation. HKS = 0: Off-hook state. Chip enabled for normal operation. HKS pin is pulled to VDD by internal resistor. XT, XT 9, 10 9, 10 11, 12 I, O T/P MUTE 11 11 13 O DP 13 15 17 O MODE 15 17 19 I HKS 12 14 16 I -3- Publication Release Date: February 1995 Revision A3 W91473 SERIES Pin Description, continued SYMBOL HPM MUTE 22-PIN 17 (only for W91473/D ) 24-PIN 19 (only for W91473A) 28-PIN 23 I/O O FUNCTION The HPM MUTE is a conventional inverter output. During pulse dialing, flash, hold, and mercury mute functions, this pin will output an active high. It remains in a low state at all other times. No connection. NC - - 8, 22 (W91473 B/C) - LOCK 17 (W91473L /DL) 19 (W91473 AL) 22 (W91473 BL/CL) I The function of the LOCK pin is shown below: LOCK PIN VDD Floating VSS FUNCTION "0," " 9" dialing inhibited Normal dialing "0" dialing inhibited DTMF 14 16 18 O 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. OUTPUT FREQUENCY R1 R2 R3 R4 C1 C2 C3 Specified 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 16, 8 1, 8 20, 10 I Power input pins. -4- W91473 SERIES Pin Description, continued SYMBOL HFI , HFO 22-PIN - 24-PIN 12, 13 28-PIN 14, 15 I/O I, O FUNCTION Handfree control pins. A low pulse on the HFI input pin toggles the handfree control state. Status of the handfree control state is listed in the following table: NEXT STATE CURRENT STATE Input Hook Sw. HFO HFO Dialing Low High Yes HFI ¡õ On Hook High ¡õ Low No HFI Off Hook On Hook Off Hook Off Hook High Low High HFI ¡õ Low Off Hook Low On Hook Low On Hook High Yes Yes No Yes The HFI pin is pulled to VDD by an internal resistor. KT 9 O Keytone signal output. The keytone will be generated in all valid keys are pressed in tone mode. Frequency is 600 Hz and duration is 35 mS. Dial rate selection. This pin is pulled to VDD by an internal resistor. DIAL DRS MODE TONE/PULSE RATE PIN VDD Pulse 10 ppS 1 Floating 10 ppS Pulse VSS Tone VDD 10 ppS Pulse 0 Floating Pulse 20 ppS VSS Tone M/B 2:3 1:2 1:2 1:2 - DRS - - 21 I -5- Publication Release Date: February 1995 Revision A3 W91473 SERIES BLOCK DIAGRAM XT XT HKS LOCK MODE SYSTEM CLOCK GENERATOR DRS HFI ROW K E Y B O A R D I N T E R F A C E READ/WRITE COUNTER C O N T R O L L O G I C P U L S E C O N T R O L L O G I C KT T/P MUTE HPM MUTE HFO DP (R1 to R5) RAM COLUMN (C1 to C7) LOCATION LATCH DTMF D/A CONVERTER ROW & COLUMN PROGRAMMABLE COUNTER DATA LATCH & DECODER FUNCTIONAL DESCRIPTION Keyboard Operation C1 1 4 7 */T F1 Note: *MER C2 2 5 8 0 F2 C3 3 6 9 # F3 C4 S CLR R/P R C5 M00 M01 M02 M03 M04 C6 M05 M06 M07 M08 M09 C7 EM1 EM2 EM3 H *MER R1 R2 R3 R4 R5 location in W91473C/CL or W91473D/DL is SAVE memory. • S:Store function key -6- W91473 SERIES • • • • • • • • • F1, F2, F3: Flash keys R: One-key redial H: Hold function key M0j: Direct repertory memory EMi: One-touch memory for emergency call */T: * & P→T CLR: Clear key R/P: Redial and pause function key MER: One-touch memory for mercury code dialing Note: Dn = 0 to 9, *, #, M0j = M00 to M09 (j = 0 to 9). 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. Redialing 1. OFF HOOK (or or , D1 & & , D2 , ..., ), , Dn R/P D1 , D2 , ..., Dn BUSY, HFI ¡õ BUSY, Come ON HOOK , OFF HOOK ON HOOK ON HOOK , R/P HFI ¡õ HFI ¡õ Come HFI ¡õ The R/P key can execute redial function only as first key-in after off-hook. Otherwise, it will execute pause function. 2. OFF HOOK (or ON HOOK & HFI ¡õ ), D1 , D2 , ..., Dn , R a. The one-key redial function timing diagram is shown in Figure 4. b. If dialing of c. If the R D1 to Dn is completed, pressing the R key will cause the pulse output pin to go low for 2.2 seconds. Break time and a 600 mS pause will automatically be added. key is pressed before the pulses for the number dialed out are completed, it will be ignored. -7- Publication Release Date: February 1995 Revision A3 W91473 SERIES Number Store 1. OFF HOOK S , Moj (or (or ON HOOK EMi or & ) HFI ¡õ ), S , D1 , D2 , ..., Dn MER D1, D2, ..., Dn will be stored in memory location but will not be dialed out. R/P and */T keys can be stored as a digit in memory. In store mode, R/P is the pause function key. The store mode can be released after the store function is executed or the state of the hook switch is changed. 2. S , D1 , D2 , ..., Dn , S , 0 , j D1, D2, ..., Dn will be stored in memory location M0j and will not be dialed out. 3. OFFHOOK S , Mn S , D2 key must be pressed after completion of the dialing sequence. , ..., Dn , S , S , 0 , j (or ON HOOK & HFI ¡õ ), D1 , D2 , ..., Dn , S , a. D1, D2, ..., Dn will be stored in memory location and will be dialed out. b. The 4. D1 D1, D2, ..., Dn will be stored in memory location M0j and will be dialed out. Repertory Dialing OFF HOOK (or ON HOOK & HFI ¡õ ), Moj (or EMi or MER ) 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, redialing, or memory dialing. 3. The pause function timing diagram is shown in Figure 5. -8- W91473 SERIES Pulse-to-Tone (*/ T) OFF HOOK */T , D1' (or , ON HOOK D2' , ..., Dn' & HFI ¡õ ), D1 , D2 , ..., Dn , 1. If the mode switch is set to pulse mode, then the output signal will be: D1, D2, ..., Dn, Pause (3.6s), D1', D2', ..., Dn' (Pulse) D1, D2, ..., Dn, * (Tone) (Tone) , D1', D2', ..., Dn' (Tone) 2. If the mode switch is set to tone mode, then the output signal will be: (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 P→T function timing diagram is shown in Figure 6. 5. */ T key cannot be stored as a digit in memory. Save 1. OFF HOOK S , SAVE (or ON HOOK & HFI ¡õ ), S , D1 , D2 , ..., Dn D1, D2, ..., Dn, will be stored in SAVE memory but will not be dialed out. 2. OFFHOOK S , SAVE Dn (or , will be stored in SAVE memory and will be dialed out. ON HOOK & HFI ¡õ (or ON HOOK & HFI ¡õ ), D1 , D2 , ..., Dn , S , D1, D2, ..., 3. OFF HOOK ), SAVE The content of SAVE memory will be dialed out. Flash (F = F1, F2, F3) OFF HOOK (or ON HOOK & HFI ¡õ ), F 1. Flash key cannot be stored as a digit in memory and it has first priority among keyboard functions. 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 7. -9- Publication Release Date: February 1995 Revision A3 W91473 SERIES Clear key 1. 2. 3. CLR CLR CLR , , , R/P Moj 0 , j (or R ) Redial and one-key redial buffer will be cleared. Location M0j buffer content will be cleared. Location M0j buffer content will be cleared. CHAIN DIALING Relationship between the memory and the chain dialing buffer: Memory Digit 16 16 ¡G ¡G ¡G ¡G ¡G ¡G 16 32 Location M00 M01 ¡G ¡G M08 M09 EM1 EM2 EM3 Normal Dialing Section 1 Chain Dialing Buffer Section 2 Section 3 Section 4 The chain dialing buffer may be divided into four sections, allowing up to four numbers to be dialed out in sequence. For example, if the user enters M01, M03, EM1, and normal dialing (manual dialing), the content of sections 1 to 4 will be M01, M03, EM1, and normal dialing (manual dialing). When numbers are entered into the chain dialing buffer, there is no need to wait until the previous dialing sequence has been completed. Numbers may be entered directly, one after the other, even while previous numbers are being dialed out. 1. Manual Dialing ¡Ï Repertory Dialing Redial buffer content = Manual dialing + Repertory dialing. 2. Repertory Dialing ¡Ï Manual Dialing Redial buffer content = Repertory dialing + Manual dialing. 3. 4. Repertory Dialing Redialing ¡Ï ¡Ï Repertory Dialing Redial buffer content = Repertory dialing + Repertory dialing. Manual Dialing Redial buffer content = Redialing + Manual dialing. - 10 - W91473 SERIES The primary redial content may not be manual dialing. Otherwise, the last redial content will be overwritten. 5. Redialing ¡Ï Repertory Dialing Redial buffer content = Redialing + Repertory dialing. Redialing is valid only as the first key-in after off-hook or after the handfree dialing function is toggled on. The second sequence should not be performed until the first sequence is completely dialed out. 6. Manual Dialing ¡Ï One key Redialing Redial buffer content = Manual dialing. The one-key redial may only be used after dialing out of a manual dialing sequence is completed. 7. Repertory Dialing 1(M1) Repertory Dialing 2(M2) or Repertory Dialing 1(M1) Repertory Dialing 2(M2) ¡Ï , One key Redialing ON HOOK , ¡Ï , Redialing ¡Ï ¡Ï One key Redialing One key Redialing ¡Ï OFF HOOK M1 and M2 represent any of the repertory dialing memories. The first redialing will dial out M1; the second will dial out M1, M2. If dialing out of the repertory dialing memories has not been completed, the one-key redial key will be ignored. Dialing of the second repertory dialing memory (M2) should not be performed until the one-key redialing operation is completed. Notes: Chain dialing (cascaded dialing) allows for memory or manual dialing while a previous dialing sequence is still being dialed out.More than one sequence of manual dialing is not permitted. Entering more than one manual dialing sequence will inhibit redialing. Chain dialing of more than four sections is not permitted. Manual Dialing ¡Ï M1 ¡Ï Manual Dialing (two sections of manual dialing) If more than four sections are entered, all sections after the fourth section will be ignored and redialing will be inhibited. Manual Dialing and inhibit redial) There is a 2.0 sec. inter-chain dialing pause for cascaded dialing. ¡Ï M1 ¡Ï M2 ¡Ï M3 ¡Ï M4 (over 4 sections, ignore M4 - 11 - Publication Release Date: February 1995 Revision A3 W91473 SERIES MERCURY DIALING 1. Up to 32 digits may be stored. 2. Mercury dialing is activated only as the first key-in after off-hook or handfree dialing is activated. 3. The timing diagram for the mercury memory function is given below. KEY IN MER DP TIDP T/P MUTE TP DTMF HPM MUTE OSC. OSCILLATION Mercury Function Timing Diagram ABSOLUTE MAXIMUM RATINGS PARAMETER DC Supply Voltage Input/Output Voltage SYMBOL VDD−VSS VIL VIH VOL VOH Power Dissipation Operating Temperature Storage Temprature 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. - 12 - W91473 SERIES DC CHARACTERISTICS (VDD−VSS = 2.5V, Fosc. = 3.58 MHz, Ta = 25° C, all outputs unloaded) PARAMETER Operating Voltage Operating Current SYMBOL VDD IOP Tone Pulse CONDITIONS MIN. 2.0 130 1 1.0 0.2 0.5 0.5 0.5 0.5 - TYP. 0.3 0.15 150 2 -30 300 400 - MAX. 5.5 0.5 0.3 15 0.2 170 3 -23 3.0 5.0 UNIT V mA µA µA VrmS dB dB V mA mA mA mA mA KΩ mA Standby Current Memory Retention Current DTMF Output Voltage Pre-emphasis DTMF Distortion DTMF Output DC Level DTMF Output Sink Current ISR IMR VTO THD VTDC ITL IPL IMI IHPMI IHPMH RKH IKTH IKTL HKS = 0, No load & No key entry HKS = 1, 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 VTO = 0.5V VTH = 2.0V DP Output Sink Current T/P MTUE Output Sink Current HPM MUTE Output Sink Current HPM MUTE Output drive Current HKS I/P Pull-high Resistor Key Tone Output Current VKTH = 2.0V VKTH = 0.5V VHFH = 2.0V VHFL = 0.5 VI = 0V VI = 2.5V 0.5 0.5 0.5 0.5 30 200 - HFO Drive/Sink Current Keypad Input Drive Current Keypad Input Sink Current Keypad Resistance IHFH IHFL IKD IKS mA µA µA KΩ - 13 - Publication Release Date: February 1995 Revision A3 W91473 SERIES AC CHARACTERISTICS PARAMETER Keypad Active in Debounce Key Release Debounce Pre-digit Pause Pre-digit Pause 1 SYMBOL TKID TKRD TPDP1 10 ppS TPDP2 20 ppS CONDITIONS M/B = 2/3 M/B = 1/2 M/B = 2/3 M/B = 1/2 10 ppS 20 ppS M/B = 2/3 M/B = 1/2 Auto Dialing Auto Dialing - MIN. - TYP. 20 20 40 33.3 20 16.7 800 500 40:60 33:67 93 93 98 305 600 3.6 600 35 600 2.2 600 MAX. - UNIT mS mS mS mS mS % mS mS mS S Hz mS mS S mS 2 Interdigit Pause (Auto dialing) Make/Break Ratio Tone Output Duration Intertone Pause Flash Break Time Pause Time Key Tone Frequency Key Tone Duration One-key Redialing Pause Time One-key Redialing Break Time First key-in Pause Time Notes: TIDP M/B TTD TITP TFB TP FKT TKTD TPR TRB TFKP 1. Crystal parameters suggested for proper operation are Rs < 100Ω, 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 - 14 - W91473 SERIES HKS KEY IN 4 TKID B M 2 2 TKID DP TPDP T/P MUTE TIDP TIDP TIDP TPDP HPM MUTE KT DTMF TFKP OSC. OSCILLATION OSCILLATION LOW Figure 1. Pulse Mode Diagram (Normal Dialing) HKS KEY IN TKID TITP DTMF TTD T/P MUTE TITP TITP TKRD TKID TKRD HPM MUTE LOW KT LOW HIGH DP TFKP OSCILLATION OSCILLATION OSC. Figure 2. Tone Mode Diagram (Normal Dialing) Timing waveforms, continued - 15 - Publication Release Date: February 1995 Revision A3 W91473 SERIES HKS OFF HOOK HFI ON HOOK H KEY HFO T/P MUTE HIGH HPM MUTE LOW CHIP ENBLE Figure 3(a). _____ Note: The H KEY cannot be enabled when chip is disabled. HKS OFF HOOK HFI H KEY HFO T/P MUTE HIGH HPM MUTE CHIP ENBLE Figure 3(b). ___ _____ ___ _____ Note: The HFI and H KEY inputs will toggle the HFO signal; as soon as either HFI or H KEY is activated, the HFO signal will go high and previous inputs will be ignored. - 16 - W91473 SERIES Timing waveforms, continued HKS ON HOOK HFI H KEY HFO T/P MUTE HIGH HPM MUTE CHIP ENBLE Figure 3(c). Note: Changing the state of the HKS signal from high to low will initialize the HFO and HPM MUTE signals. HKS LOW KEY IN R TKID DP TRB TIDP TPDP TIDP T/P MUTE HPM MUTE KT DTMF TFKP OSC. OSCILLATION LOW Figure 4. Pulse Mode One-key Redialing Timing Diagram (when not first key) - 17 - Publication Release Date: February 1995 Revision A3 W91473 SERIES Timing waveforms, continued HKS KEY IN 4 TKID BM 2 R/P MB 2 DP TIDP TPDP T/P MUTE TP TIDP TIDP TPDP HPM MUTE KT DTMF TFKP OSC. OSCILLATION LOW Figure 5. Pause Function Timing Diagram HKS KEY IN 4 TKID BM 2 */T MB 8 DP TIDP TPDP T/P MUTE TP TIDP HPM MUTE KT TIDP DTMF TFKP OSC. OSCILLATION Figure 6. Pulse-to-Tone Function Timing Diagram - 18 - W91473 SERIES Timing waveforms, continued HKS LOW KEY IN F DP T/P MUTE TFB HPM MUTE KT DTMF LOW TFKP OSC. OSC. Figure 7. Flash Operation Timing Diagram - 19 - Publication Release Date: February 1995 Revision A3 W91473 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. - 21 - Publication Release Date: February 1995 Revision A3