W91590C

W91590 SERIES 24-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE, HOLD AND LOCK FUNCTIONS GENERAL DESCRIPTION The W91590 series dialers Si-gate CMOS IC tone/pulse switchable dialers with a 24-channel automatic dialing memory, including a 16-digit × 3 emergency dialing memory, a 16-digit × 20 channel repertory memory that provides one-touch and three-touch dialing, and a 32-digit mercury memory. These dialers also provide flash, clear, hold, and one-key redial functions. FEATURES • • • • • • • • • • • • • • • DTMF/Pulse switchable dialer 32-digit LNB (last number buffer) memory (both tone and pulse mode) 32-digit mercury memory (tone/pulse mode) 16-digit × 3 one-touch direct repertory memory (tone/pulse mode) 16-digit × 20 direct or indirect repertory memory (tone/pulse mode) Uses 9 × 5 keyboard Flash time: 98 mS, 305 mS, or 600 mS (selectable by keypad option) Pause time: 3.6 sec. Pause P→T (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 22, 24 or 28-pin plastic DIP The different dialers in the W91590 series are shown in the following table: TYPE NO. W91590 W91590L W91590A W91590AL W91590B W91590BL W91590C W91590CL PULSE MEMORY (ppS) 10 10 10 10 10/20 10/20 10/20 10/20 20 20 20 20 24 24 24 24 MERCURY MEMORY Yes Yes Save Memory Save Memory HOLD HANDFREE Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes LOCK PACKAGE FUNCTION Yes Yes Yes Yes 22 22 24 24 28 28 28 28 -1- Publication Release Date: July 1995 Revision A3 W91590 SERIES PIN CONFIGURATIONS C1 C2 C1 C1 C2 C3 C4 C5 C6 C7 V SS 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 NC V DD MODE DTMF DP/C9 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 NC VDD MODE DTMF DP/C9 HKS HFO C3 C4 C5 C6 C7 C8 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/C9 HKS HFO W91590 W91590A W91590B/C C1 C2 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/C9 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/C9 HKS HFO C3 C4 C5 C6 C7 C8 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/C9 HKS HFO W91590L W91590AL W91590BL/CL -2- W91590 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 FUNCTION I The keyboard input may be from either the standard 9 × 5 keyboard or an inexpensive single contact (form A) keyboard. Electronic input from a µC can also be used. A valid key entry is defined by a single row being connected to a single column. I, O A built-in inverter provides oscillation with an inexpensive 3.579545 MHz crystal or ceramic resonator. O 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. O 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. I Pulling mode pin to VSS places the dialer in tone mode. Pulling mode pin to VDD places the dialer in pulse mode (M/B = 2:3). Leaving mode pin floating places the dialer in pulse mode (M/B = 1:2). I Hook switch input. HKS = 1: On-hook state. Chip in sleeping mode, no operation. HKS = 0: Off-hook state. Chip enabled for normal operation. HKS pin is pulled to VDD by internal resistor. O N-channel open drain dialing pulse output (Figure 1). Flash key causes DP to go active when in pulse mode and tone mode. - No connection. XT, XT 9, 10 9, 10 11, 12 T/P MUTE 11 11 13 HPM MUTE - - 23 MODE 15 17 19 HKS 12 14 16 DP / C9 13 15 17 NC 17 19 22 (W91590) (W91590A) (W91590B/C) -3- Publication Release Date: July 1995 Revision A3 W91590 SERIES Pin Description, continued SYMBOL LOCK 22-PIN 24-PIN 28-PIN I/O FUNCTION 17 19 22 I The function of this pin is as follows: (For (For (For FUNCTION LOCK PIN W91590L) W91590AL) W91590BL/CL) VDD Floating VSS "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 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 HFI , HFO 16, 8 - 18, 8 12, 13 20, 10 14, 15 I Power input pins. I, O 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: CURRENT STATE Hook SW. HFO Low 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 On Hook Off Hook On Hook Off Hook Off Hook Low High KT - - 9 HFI pin is pulled to VDD by internal resistor. The detailed timing is shown in Fig 3. O Key tone signal output. A key tone will be generated whenever a valid keys is pressed. Frequency is 600 Hz and duration is 35 mS. -4- W91590 SERIES Pin Description, continued SYMBOL DRS 22-PIN - 24-PIN - 28-PIN 21 I/O FUNCTION I Dial rate selection. This pin is pulled to VDD by an internal resistor. DRS MODE PIN TONE/PULSE DIAL RATE M/B 1 VDD Floating VSS VDD Pulse Pulse Tone Pulse Pulse Tone 10 ppS 2:3 10 ppS 1:2 10 ppS 1:2 20 ppS 1:2 2 Floating VSS BLOCK DIAGRAM XT HKS LOCK MODE XT SYSTEM CLOCK GENERATOR HFI DRS KT KEYBOARD INTERFACE RAM READ/WRITE COUNTER CONTROL LOGIC PULSE CONTROL LOGIC T/P MUTE HPM MUTE HFO DP/C9 ROW (R1 to R5) COLUNM (C1 to C8) LOCATION LATCH DTMF D/A CONVERTER ROW & COLUMN PROGRAMMABLE COUNTER DATA LATCH & DECODER -5- Publication Release Date: July 1995 Revision A3 W91590 SERIES FUNCTIONAL DESCRIPTION Keyboard Operation C1 1 4 7 */T F1 MER • • • • • • • • • • • • • C2 2 5 8 0 F2 C3 3 6 9 # F3 C4 S MEMO CLR R/P R C5 M00 M01 M02 M03 M04 C6 M05 M06 M07 M08 M09 C7 M10 M11 M12 M13 M14 DP / C9 M15 M16 M17 M18 M19 C8 EM1 EM2 EM3 H *MER R1 R2 R3 R4 R5 location in W91590C/CL is SAVE memory. S: Store function key F1, F2, F3: Flash keys R: One-key redial H: Hold function key C9 : This key is connected to pin DP / C9 via a bipolar switching transistor and a diode M0j: Direct or indirect (MEMO + M0j = M1j) repertory memory M1j: Direct repertory dialing 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 MEMO: Indirect repertory dialing function key Note: Dn = 0 to 9, *, #, Mij = M00 to M19 (i = 0, 1; j = 0 to 9). Normal Dialing OFF HOOK (or ON HOOK & HFI ), 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. -6- W91590 SERIES Redialing 1. OFF HOOK (or or HFI , D1 & & , D2 HFI HFI , …, ), , Dn R/P D1 , D2 , …, Dn , BUSY, HFI Come BUSY, Come ON HOOK , OFF HOOK ON HOOK ON HOOK , R/P 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 ), D1 , D2 , …, Dn , R a. The one-key redial function timing diagram is shown in Figure 4. b. If dialing D1 to Dn is completed, pressing the R key will cause the pulse output of pin to go low for 2.2 seconds. Break time and a 600 mS pause will automatically be added. If the pulses of the dialed number (or , ON HOOK or MER & D1 to Dn have not finished, R will be ignored. c. Number Store 1. OFF HOOK S , Mij HFI ), S , D1 , D2 , …, Dn EMi 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 , i , j D1, D2, ..., Dn will be stored in memory location Mij and will not be dialed out. 3. S , D1 , D2 , …, Dn , S , MEMO , M0j a. D1, D2, ..., Dn will be stored in memory location M10 to M19 and will not be dialed out. b. MEMO + M0j = M1j. -7- Publication Release Date: July 1995 Revision A3 W91590 SERIES 4. OFF HOOK (or ON HOOK & or Ln HFI ), D1 , D2 , …, Dn , S , S , Mn a. D1, D2, ..., Dn will be stored in memory location and will be dialed out. b. The 5. D1 , S key must be pressed after completion of the dialing sequence. D2 , …, Dn , S , S , i , j D1, D2, ..., Dn will be stored in memory location Mij and will be dialed out. 6. D1 , D2 , …, Dn , S , S , MEMO , M0j a. D1, D2, ..., Dn will be stored in memory location M10 to M19 and will be dialed out. b. MEMO + M0j = M1j. Repertory Dialing 1. 2. 3. OFF HOOK (or ON HOOK & OFF HOOK (or ON HOOK & OFF HOOK (or ON HOOK & HFI HFI HFI ), ), ), Mij or EMi or MER , , i M0j , j MEMO MEMO Access Pause HFI 1. The pause function can be stored in memory. OFF HOOK (or ON HOOK & ), D1 , D2 , R/P , D3 , …, Dn 2. The pause function is executed in normal dialing, redialing, or memory dialing. 3. The pause function timing diagram is shown in Figure 5. Pulse-to-Tone (*/ T) OFF HOOK */T , D1' (or , ON HOOK D2' , …, & Dn' HFI ), 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' 2. If the mode switch is set to tone mode, then the output signal will be: (Tone) (Tone) -8- W91590 SERIES 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 can be stored as a digit in memory Flash (F = F1, F2, F3) ), F HFI 1. Flash key cannot be stored as a digit in memory, and 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. OFF HOOK (or ON HOOK & Clear key 1. 2. 3. 4. CLR CLR CLR CLR , , , , R/P Mij i , j , M0j (or R ) Redial and one-key redial buffer will be cleared. Location Mij buffer content will be cleared. Location Mij buffer content will be cleared. MEMO Location Mij buffer content will be cleared. Save 1. OFF HOOK (or ON HOOK & HFI ), D1, D2, …, Dn S , S , SAVE D1, D2, …, Dn will be stored in save memory and dialed out. 2. OFF HOOK (or ON HOOK & HFI ), SAVE D1, D2, …, Dn will be stored in save memory but will not be dialed out. 3. OFF HOOK (or ON HOOK & HFI ), D1, D2, …, Dn S , S , SAVE D1, D2, …, Dn will be stored in save memory and dialed out. -9- Publication Release Date: July 1995 Revision A3 W91590 SERIES CHAIN DIALING Relationship between the memory and the chain dialing buffer: Memory Digit 16 16 . . . . . . . . . . . . . . 16 32 Location M00 M01 . . . . M18 M19 M20 EM1 EM2 EM3 Normal Dialing Section 4 Section 3 Section 1 Chain Dialing Buffer Section 2 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. 2. 3. 4. Manual Dialing Repertory Dialing Repertory Dialing Redialing + + + + Repertory Dialing Manual Dialing Repertory Dialing Manual Dialing Redial buffer content = Manual dialing + Repertory dialing Redial buffer content = Repertory dialing + Manual dialing Redial buffer content = Repertory dialing + Repertory dialing Redial buffer content = Redialing + Manual dialing The primary redial content may not be manual dialing, or else the last redial content will be overwritten. 5. Redialing + Repertory Dialing - 10 - W91590 SERIES 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 + 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) + , One Key Redialing ON HOOK , + , Redialing + + One Key Redialing One Key Redialing + 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: 1. Chain dialing (cascaded dialing) allows for memory or manual dialing while a previous dialing sequence is still being dialed 2. 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 + M1 + Manual Dialing (two sections of manual dialing) out. 3. If more than four sections are entered, all sections after the fourth section will be ignored and redialing will be inhibited. Manual Dialing + M1 + M2 + M3 + M4 (over 4 sections, ignore M4 and inhibit redial) 4. There is a 2.0 sec. inter-chain dialing pause for cascaded dialing. - 11 - Publication Release Date: July 1995 Revision A3 W91590 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 - W91590 SERIES DC CHARACTERISTICS (VDD−VSS = 2.5V, FOSC. = 3.58 MHz, Ta = 25° C, all outputs unloaded) PARAMETER Operating Voltage Operating Current SYM. 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 3.0 500 5.0 UNIT V mA 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 HPM MUTE Output Sink Current HPM MUTE Output drive Current HKS I/P Pull High Resistor Key Tone Output Current ISB IMR VTO THD VTDC ITL IPL IML IHPML IHPMH RKH IKTH IKTL HKS = 0, No load & No key entry HKS = 1, VDD = 1.0V Row group, RL = 5K 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 µA µA VrmS dB dB V mA mA mA mA mA KΩ mA VKTH = 2.0V VKTH = 0.5V VHFH = 2.0V VHFL = 0.5V VI = 0V VI = 2.5V 0.5 0.5 0.5 0.5 30 200 - HFO Drive/Sink Current IHFH IHFL mA Keypad Input Drive Current Keypad Input Sink Current Keypad Resistance IKD IKS µA µA KΩ - 13 - Publication Release Date: July 1995 Revision A3 W91590 SERIES AC CHARACTERISTICS PARAMETER Keypad Active in Debounce Key Release Debounce Pre-digit Pause1 SYM. TKID TKRD TPDP1 10 ppS Pre-digit Pause2 TPDP2 20 ppS Interdigit Pause (Auto dialing) TIDP CONDITIONS MODE Pin = 1 MODE Pin = Floating MODE Pin = 1 MODE Pin = Floating 10 ppS 20 ppS Make/Break Ratio M/B MODE Pin = 1 MODE Pin = Floating Tone Output Duration Intertone Pause Flash Break Time TTD TITP TFB Auto Dialing Auto Dialing MIN. Pause Time Key Tone Frequency Key Tone Duration One-key Redialing Pause Time One-key Redialing Break Time First Key-in Pause Time 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. 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 TP FKT TKTD TPR TRB TFKP - - S Hz mS mS S mS - 14 - W91590 SERIES TIMING WAVEFORMS HKS H KEY IN 4 TKID M B 2 2 TKID TIDP TPDP DP TPDP T/P MUTE TIDP TIDP 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 OSC. TFKP OSCILLATION OSCILLATION Figure 2. Tone Mode Diagram (Normal Dialing) - 15 - Publication Release Date: July 1995 Revision A3 W91590 SERIES Timing Waveforms, continued 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 HFI 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 - W91590 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: July 1995 Revision A3 W91590 SERIES Timing Waveforms, continued HKS KEY IN 4 TKID BM 2 R/P MB 2 DP TPDP T/P MUTE TP HPM MUTE TIDP TIDP TIDP TPDP KT DTMF TFKP OSC. OSCILLATION LOW Figure 5. Pause Function Timing Diagram HKS KEY IN 4 TKID BM 2 */T MB 8 DP TPDP T/P MUTE TIDP TIDP TP HPM MUTE KT TIDP DTMF TFKP OSC. OSCILLATION Figure 6. Pulse-to-Tone Function Timing Diagram - 18 - W91590 SERIES Timing Waveforms, continued HKS LOW KEY IN F DP T/P MUTE TFB HPM MUTE KT LOW TFKP OSC. OSCILLATION DTMF Figure 7. Flash Operation Timing Diagram - 19 - Publication Release Date: July 1995 Revision A3 W91590 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. - 20 -