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W91460N SERIES 3-MEMORY TONE/PULSE DIALER WITH SAVE FUNCTION
GENERAL DESCRIPTION
The W91460N series are Si-gate CMOS ICs that provide the necessary signals for either tone or pulse dialing. The W91460N series features save memory and 3 by 16-digit automatic dialing memory.
FEATURES
* * * * * * * * * * * * * * * * *
DTMF/pulse switchable dialer Two by 32-digit redial and save memory Three by 16-digit one-touch direct memory Redial memory cascadable with normal dialing; dialing length is unlimited, but if length exceeds 32-digit the redial function is inhibited Pulse-to-tone (*/T) keypad for long distance call operation Uses 5 x 5 keyboard Easy operation with redial, flash, pause and */T keypads Flash, pause, PT (pulse-to-tone) can be stored as a digit in memory Dialing rate (10, 20 ppS ) selected by bonding option On-hook debounce time: 150 msec. Minimum tone output duration: 93 msec. Minimum intertone pause: 93 msec. Flash break time (73, 100, 300, 600 msec.) selectable by keypad; pause time is 1.0 sec. On-chip power-on reset Uses 3.579545 MHz crystal or ceramic resonator Packaged in 18-pin plastic DIP The different dialers in the W91460N series are shown in the following table:
TYPE NO. REPLACEMENT TYPE NO. W91462 W91462N W91463 W91464 W91465 W91466N W91466 W91467 20 600/300/73/100 3.6 Pin 10 600/300/73/100 3.6 Pin PULSE (ppS) FLASH (mS) PAUSE (S) M/B
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Publication Release Date: May 1997 Revision A2
W91460N SERIES
PIN CONFIGURATION
C1 C2 C3 C4 C5 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 HKS
PIN DESCRIPTION
SYMBOL ColumnRow Inputs PIN 1-5 & 15-18 I/O I FUNCTION The keyboard inputs may be used with either a standard 5 x 5 keyboard or an inexpensive single contact (Form A) keyboard. Electronic input from a C can also be used. A valid key-in is defined as a single row being connected to a single column. I, O O 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. 13 I 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 40:60 (10 ppS for W91462N and 20 ppS for W91466N). Floating mode pin places the dialer in pulse mode with M/B ratio 33.3:66.7 (10 ppS for W91462N and 20 ppS for W91466N).
XT, XT T/P MUTE MODE
7, 8 9
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W91460N SERIES
Pin Description, continued
SYMBOL HKS
PIN 10
I/O I Hook switch input.
FUNCTION
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. DP 11 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 DTMF 14, 6 12 I O Power input pins. In pulse mode, this pin remains in low state at all times. In 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
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Publication Release Date: May 1997 Revision A2
W91460N SERIES
BLOCK DIAGRAM
XT
XT
SYSTEM CLOCK GENERATOR
HKS
ROW (R1 to R4, Vx) KEYBOARD INTERFACE COLUMN (C1 to C5) LOCATION LATCH
READ/WRITE COUNTER
CONTROL LOGIC
MODE
RAM
PULSE CONTROL LOGIC
T/P MUTE
DP
DTMF
D/A CONVERTER
ROW & COLUMN PROGRAMMABLE COUNTER
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 R/P
C5 M1 M2 M3 SAVE R1 R2 R3 R4 VX
S: Store function key R/P: Redial and pause function key SAVE: Save function key /T: in tone mode and PT in pulse mode M1, ..., M3: One-touch memory F1, ..., F4: Flash keys, F1 = 600 mS, F2 = 300 mS, F3 = 73 mS, F4 = 100 mS
Note: D1, ..., Dn, D1', ..., Dn': 0, ..., 9, */T, #; Mn: M1, ..., M3; Fn: F1, ..., F4
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W91460N SERIES
Normal Dialing
OFF HOOK , 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 2. The R/P , D1 , D2 , ..., Dn Busy, Come ON HOOK , OFF HOOK , R/P 1. The redial memory content will be dialed out. key can execute the redial function only as the first key-in after off-hook; otherwise, it executes the pause function. 3. If redialing length exceeds 32 digits, the redialing function will be inhibited.
Number Store
OFF HOOK , D1 , D2 , ..., Dn , S, S, Mn
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 , S, D1 , D2 , ..., Dn , S, Mn
S
will be ignored.
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. In store mode, is the pulse to tone function key. R/P is the pause
function key;
*/T
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 , Mn
Access Pause
OFF HOOK , D1 , D2 , R/P , D3 , ..., Dn 1. The pause function can be stored as a digit in memory. 2. The pause function is executed in normal dialing, redial dialing, or memory dialing. 3. A detailed timing diagram for the pause function is shown in Figure 3.
Pulse-to-tone (*/T)
Publication Release Date: May 1997 Revision A2
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W91460N SERIES
OFF HOOK , D1 , D2 , ..., Dn , */T , D1' , D2' , ..., Dn'
1. If the mode switch is set to pulse mode, then the output signal will be: D1, D2, ..., Dn, Pause (3.6 sec.), D1', D2', ..., Dn' (Pulse) 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 4. (Tone ) 2. If the mode switch is set to tone mode, then the output signal will be as follows:
Flash
OFF HOOK , 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 can be stored as a digit in memory; however, only one flash will be released to users. 4. The system will return to the initial state after the flash pause time is finished. 5. The timing diagram of flash function is shown in Figure 5.
Save
OFF HOOK , D1 , D2 , ..., Dn , SAVE
1. If the dialing of
D1
to
Dn
is finished, pressing the
SAVE
key will cause D1 to Dn to
be copied to the save memory. OFF HOOK , SAV E
2. D1 to Dn will be dialed out after the save key is pressed.
Cascaded Dialing
1. Normal Dialing + 2. Repertory Dialing 3. Redialing + Repertory Dialing + Normal Dialing + + + Normal Dialing Repertory Dialing
Normal
Repertory Dialing
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W91460N SERIES
Dialing Redialing is valid as first key-in only.
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Publication Release Date: May 1997 Revision A2
W91460N SERIES
ABSOLUTE MAXIMUM RATINGS
PARAMETER DC Supply Voltage Input/Output Voltage SYMBOL VDD-VSS VIL VIH VOL VOH Power Dissipation Operation 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 +150 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. = 3.579545 MHz, TA = 25 C, All outputs unloaded)
PARAMETER SYMBOL 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 THD VTDC ITL IPL IML VDD IOP ISB IMR VTO
CONDITIONS MIN. Tone, Unloaded Pulse, Unloaded HKS = VSS, No load & No key entry HKS = VDD, VDD = 1.0V Row group, RL = 5 K Col/Row, VDD = 2.0 to 5.5V RL = 5 K, VDD = 2.0 to 5.5V RL = 5 K, VDD = 2.0 to 5.5V VTO = 0.5V VPO = 0.5V VTMO = 0.5V 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 A A mVrms dB dB V mA mA mA
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W91460N SERIES
DC Characteristics, continued
PARAMETER Keypad Input Drive Current Keypad Input Sink Current HKS I/P Pull-high Resistor Keypad Resistance
SYMBOL IKD IKS RHK RK
CONDITIONS VI = 0.0V VI = 2.5V -
MIN. 30 200 -
TYP. 400 300 -
MAX. 5.0
UNIT A A K K
AC CHARACTERISTICS
(VDD-VSS = 2.5V, FOSC. = 3.579545 MHz, TA = 25 C, All outputs unloaded)
PARAMETER Key-in Debounce Key Release Debounce Pre-digit Pre-digit Pause1 Pause2
SYMBOL TKID TKRD TPDP1 10 ppS TPDP2 20 ppS TIDP M:B TTD TITP TFB
CONDITIONS Mode = VDD Mode = Floating Mode = VDD Mode = Floating 10 ppS 20 ppS Mode = VDD Mode = Floating Auto dialing Auto dialing F1 F2 F3 F4
MIN. -
TYP. 20 20 40 33.3 20 16.7 800 500 40:60 33.3:66.7 93 93 600 300 73 100 1.0 3.6 150
MAX. -
UNIT mS mS mS mS mS % mS mS mS
Interdigit Pause (Auto Dialing) Make/Break Ratio Tone Output Duration Intertone Pause Flash Break Time
Flash Pause Time Pause Time On-hook Debounce Time
Notes:
TFP TP TOHD
F1, F2, F3, F4 -
S S mS
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.
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Publication Release Date: May 1997 Revision A2
W91460N SERIES
TIMING WAVEFORMS
HKS TKRD KEY IN DP T/P MUTE 3 TKID TIDP
MB
4
2
MB
2 TKID
TIDP TPDP
TIDP TPDP
TIDP
DTMF
Low
OSC.
OSCILLATION
OSCILLATION
Figure 1(a) Normal Dialing Timing Diagram
HKS TKRD KEY IN DP T/P MUTE R/P TKID
MB MB
TTIDP TPDP
TIDP
TIDP
DTMF
Low
OSC.
OSCILLATION
Figure 1(b) Pulse Mode Auto Dialing Timing Diagram
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W91460N SERIES
Timing Waveforms, continued
HKS TKRD KEY IN DP T/P MUTE R/P TKID
MB MB
T > T OHD
TIDP TPDP
TIDP
DTMF
Low
OSC.
OSCILLATION
Figure 1(c) Pulse Mode Auto Dialing Timing Diagram
HKS TKRD KEY IN DTMF TTD T/P MUTE TITP TITP TITP 3 TKID 4 2 5
DP
High
OSC.
OSCILLATION
OSCILLATION
Figure 2(a) Tone Mode Normal Dialing Timing Diagram
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Publication Release Date: May 1997 Revision A2
W91460N SERIES
Timing Waveforms, continued
HKS TKRD KEY IN DTMF TTD T/P MUTE TITP TITP R/P TKID TDP
High
OSC.
OSCILLATION
Figure 2(b) Tone Mode Auto Dialing Timing Diagram
HKS T KRD KEY IN DTMF TTD T/P MUTE TITP R/P TKID T > T OHD
DP
High
OSC.
OSCILLATION
Figure 2(c) Tone Mode Auto Dialing Timing Diagram
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W91460N SERIES
Timing Waveforms, continued
HKS KEY IN DP T/P MUTE
2 R/P 3
TKID
MB MB
TIDP TPDP TP
TPDP
DTMF
Low
OSC.
OSCILLATION
Figure 3. Pause Function Timing Diagram
HKS KEY IN DP TPDP T/P MUTE 2 TKID
MB
*/T
3
TIDP TP
DTMF
OSC.
OSCILLATION
Figure 4. Pulse-to-tone Timing Diagram
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Publication Release Date: May 1997 Revision A2
W91460N SERIES
Timing Waveforms, continued
HKS KEY IN F TKID DP T/P MUTE TFP F
Low 3 T FB T FP
DTMF T ITP
OSC.
OSCILLATION
Figure 5. Flash Timing Diagram
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W91460N 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.
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