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| W91080 SERIES TONE/PULSE DIALER WITH HANDFREE AND KEYTONE FUNCTIONS AND ONE MEMORY GENERAL DESCRIPTION The W91080 series dialers are Si-gate CMOS ICs that provide the necessary signals for either pulse or tone dialing. The W91080 series feature handfree dialing and redial functions and one number memory. FEATURES * * * * * * * * * * * * DTMF/Pulse switchable dialer Two by 32 digits for redial memory and one number memory Pulse-to-tone (*/T) keypad for long distance call operation Uses 4 x 5 keyboard Easy operation with redial, flash, pause, and */T keypads Pause, PT (pulse-to-tone) can be stored as a digit in memory Minimum tone output duration: 100 msec Minimum intertone pause: 100 msec 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 W91080 series are described in the following table: TYPE NO. W91080 W91080A PULSE (ppS) 10 10 FLASH (mS) 600/98 600/98 M/B Pin Pin HANDFREE DIALING Yes PACKAGE (PINS) 18 20 -1- Publication Release Date: June 1994 Revision A3 W91080 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 DP/C5 HKS C2 C3 C4 KT V SS XT XT T/P MUTE HFI 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/C5 HKS HFO W91080 W91080A PIN DESCRIPTION SYMBOL Column-Row Inputs 18-PIN 1-4 & 15-18 20-PIN 1-4 & 17-20 I/O I FUNCTION The keyboard input may be from either the standard 4 x 5 keyboard or an inexpensive single contact (form A) keyboard. Electronic input from a C 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 sequences and flash break. 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 (10 ppS, M/B = 2:3). If the mode pin is left floating, the dialer is in pulse mode (10 ppS, M/B = 1:2). XT, XT T/P MUTE 7, 8 9 7, 8 9 I, O O MODE 13 15 I -2- W91080 SERIES Pin Description, continued SYMBOL HKS 18-PIN 10 20-PIN 12 I/O I FUNCTION Hook switch input. HKS = 1: On-hook state. Chip in sleeping mode, no operation. HKS = 0: Off-hook state. Chip enabled for normal operation. This pin must be set in conjunction with HFI , HFO. Refer to description of HFI , HFO pins. HKS pin is pulled to VDD by internal resistor. N-channel open drain dialing pulse output (Figure 1). Flash key will cause DP to be active in either tone mode or pulse mode. In pulse mode, remains in low state. In tone mode, outputs a dual or single tone. Detailed timing diagram for tone mode is shown in Figure 2 (a, b). 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 DP / C5 11 13 O DTMF 12 14 O VDD, VSS 14, 6 16, 6 I Power input pins. -3- Publication Release Date: June 1994 Revision A3 W91080 SERIES Pin Description, continued SYMBOL HFI , HFO 18-PIN - 20-PIN 10, 11 I/O I, O FUNCTION Handfree control pins. Handfree control state is toggled by a low pulse on the HFI input pin. Status of the handfree control state is described 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 Dialing Yes No Yes Yes No Yes On Hook Off Hook On Hook Off Hook Off Hook Low High Low High HFI is pulled to VDD by an internal resistor. KT 5 5 O Key-tone signal output. The key tone will be generated in pulse mode and when operation and function keys (R/P, S, F1, F2, */T) are pressed in tone mode. Frequency is 600 Hz and duration is 35 mS. BLOCK DIAGRAM XT HKS MODE XT SYSTEM CLOCK GENERATOR HFI T/P MUTE ROW (R1 to R4) KEYBOARD INTERFACE RAM READ/WRITE COUNTER CONTROL LOGIC PULSE CONTROL LOGIC KT HFO DP/C5 COLUNM (C1 to C4) LOCATION LATCH DTMF D/A CONVERTER ROW & COLUMN PROGRAMMABLE COUNTER DATA LATCH & DECODER -4- W91080 SERIES FUNCTIONAL DESCRIPTION Keyboard Operation C1 1 4 7 */T * * * * * C2 2 5 8 0 C3 3 6 9 # C4 DP / C5 MEM R1 R2 R3 R4 S F1 F2 R/P S: Store function key */T: * & PT key R/P: Redial and pause function key F1, F2: Flash keys MEM: Memory function key Normal Dialing OFF HOOK (or ON HOOK & HFI o ), 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 OFF HOOK (or or , D1 & & , D2 , ..., ), , Dn R/P D1 , D2 , ..., Dn , BUSY, HFI o , Come BUSY, Come ON HOOK , OFF HOOK ON HOOK ON HOOK , R/P HFI o HFI o HFI o The R/P key can execute the redial function only as the first key-in after off-hook; otherwise, it executes the pause function. Number Store OFF HOOK , D1 , D2 , ..., Dn , S , S , ME M 1. D1, D2, ..., Dn will be stored in memory and will be dialed out. OFF HOOK , S , D1 , D2 , ..., Dn , S , MEM 2. D1, D2, ..., Dn will be stored in memory but will not be dialed out. Publication Release Date: June 1994 Revision A3 -5- W91080 SERIES 3. R/P and PT keys can be stored as a digit in memory, but R/P key cannot be the first digit. The store mode is released after the store function is executed or the state of the hook switch changes. Repertory Dialing OFF HOOK (or ON HOOK & HFI o ), ME M The contents of MEM will be dialed out. Access Pause OFF HOOK (or ON HOOK & HFI o ), 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 3. Pulse to Tone (*/ T) OFF HOOK D1' , D2' (or , ..., ON HOOK Dn' & HFI o ), D1 , D2 , ..., Dn , */T , 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) (Tone) 2. If the mode switch is set to tone mode, then the output signal will be: D1, D2, ..., Dn, * , D1', D2', ..., Dn' (Tone) (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 PT function timing diagram is shown in Figure 4. Flash (F = F1 or F2) OFF HOOK (or ON HOOK & HFI o ), F 1. The flash key cannot be stored as a digit in memory. The flash key 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 5. -6- W91080 SERIES ABSOLUTE MAXIMUM RATINGS PARAMETER DC Supply Voltage Input/Output Voltage SYMBOL VDD-VSS VIL VIH VOL VOH Power Dissipation Operating 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 +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. DC CHARACTERISTICS (VDD-VSS = 2.5V, FOSC. = 3.58 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 SYM. VDD IOP ISB IMR VTO CONDITIONS Tone Pulse HKS = 0, No load & No key entry HKS = 1, VDD = 1.0V Row group, RL = 5 K Col/Row, VDD = 2.0 to 5.5V MIN. 2.0 130 1 1.0 0.2 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 mA A A mVrms dB dB V mA mA THD VTDC ITL IPL RL = 5 K, VDD = 2.0 to 5.5V RL = 5 K, VDD = 2.0 to 5.5V VTO = 0.5V VPO = 0.5V -7- Publication Release Date: June 1994 Revision A3 W91080 SERIES DC Characteristics, continued PARAMETER T/P MUTE Output Sink Current HKS I/P Pull-High Resistor KT Drive/Sink Current HFO Drive/Sink Current Keypad Input Drive Current Keypad Input Sink Current Keypad Resistance SYM. IML RKH IKTH IKTL IHFH IHFL IKD IKS CONDITIONS VMO = 0.5V MIN. 0.5 - TYP. 300 400 - MAX. 5.0 UNIT mA K mA mA mA mA A A K VKTH = 2.0V VKTL = 0.5V VHFH = 2.0V VHFL = 0.5V VI = 0V VI = 2.5V -0.5 0.5 -0.5 0.5 30 200 - AC CHARACTERISTICS PARAMETER Keypad Active in Debounce Key Release Debounce Pre-digit Pause Interdigit Pause (Auto dialing) Make/Break Ratio DTMF Output Duration Intertone Pause Flash Break Time KT Duration Time Notes: 1. Crystal parameters suggested for proper operation are Rs < 100 , 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. SYM. TKID TKRD TPDP 10 ppS TIDP M/B TTD TITP TFB TKT CONDITIONS MIN. - TYP. 20 20 40 33.3 800 40:60 33:67 100 100 98 600 35 MAX. - UNIT mS mS mS mS mS % % mS mS mS mS mS Mode Pin = 1 Mode Pin = Floating 10 ppS Mode Pin = 1 Mode Pin = Floating Auto Dialing Auto Dialing F2 F1 - -8- W91080 SERIES TIMING WAVEFORMS HKS 3 T KID DP TPDP T/P MUTE TKT LOW TIDP TB TM 2 TPDP TIDP R/P T KI D KEY IN TPDP TIDP TIDP TPDP KT DTMF OSC. OSCILLATIO N NORMAL DIALING OSCILLATIO N AUTO DIALING Figure 1. Pulse Mode Timing Diagram HKS KEY IN TKID TITP DTMF TTD T/P MUTE TITP TITP TKRD TKRD TKID TKRD DP HIGH KT OSC. OSCILLATION LOW OSCILLATION Figure 2(a). Tone Mode Normal Dialing Timing Diagram Timing Waveforms, continued -9- Publication Release Date: June 1994 Revision A3 W91080 SERIES HKS KEY IN R/P TKID DTMF TTD TITP T/P MUTE TITP DP KT HIGH LOW OSC. OSCILLATION Figure 2(b). Tone Mode Auto Dialing Timing Diagram HKS KEY IN 4 TKID 2 R/P 2 M DP TPDP TIDP TB TM TIDP TIDP TPDP TP T/P MUTE DTMF LOW KT OSC. OSCILLATION Figure 3. Pause Function Timing Diagram Timing Waveforms, continued - 10 - W91080 SERIES HKS KEY IN 4 TKID 2 */T 8 DP TPDP T/P MUTE TIDP TB TM TIDP TP TITP DTMF KT OSC. OSCILLATION Figure 4. PT Operation Timing Diagram in Normal Dialing HKS LOW KEY IN F TKID DP T/P MUTE KT TFB DTMF LOW OSC. OSCILLATION Figure 5. Flash Operation Timing Diagram - 11 - Publication Release Date: June 1994 Revision A3 W91080 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. - 12 - |
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