W91312N monolithic that provide necessary signals either pulse tone di
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Preliminary W91312N TONE/PULSE DIALER WITH REDIAL FUNCTION
W91312N monolithic that provide necessary signals either pulse tone dialing. W91312 feature redial memory.
DTMF/Pulse switchable dialer digits redial memory Pulse-to-tone (PT) keypad long distance call operation Break/Make ratio selectable option Uses keyboard Easy operation with redial, flash, pause, keypads Pause, (pulse-to-tone) stored digit memory Minimum tone output duration: Minimum intertone pause: On-chip power-on reset Uses 3.579545 crystal ceramic resonator Packaged 18-pin plastic different dialers W91310 series shown following table: TYPE W91312N PULSE (ppS) 10/20 FLASH (mS) 600/100/300/73 FLASH PAUSE PAUSE 3.6/2.0
CONFIGURATION
MUTE
MODE DTMF
Publication Release Date: 2000 Revision
Preliminary W91312N
DESCRIPTION
SYMBOL ColumnRow Inputs 15-18 FUNCTION keyboard input from either standard keyboard inexpensive single contact (form keyboard. Electronic input from also used. valid entry defined single being connected single column. built-in inverter provides oscillation with inexpensive 3.579545 crystal ceramic resonator. MUTE conventional CMOS N-channel open drain output. output transistor switched during pulse tone mode dialing sequence flash break. Otherwise, switched off. Pulling mode places dialer tone mode. Pulling mode places dialer pulse mode ppS). Leaving mode floating places dialer pulse mode ppS). Hook switch input. On-hook state. Chip sleeping mode, operation. Off-hook state. Chip enabled normal operation. pulled internal resistor. N-channel open drain dialing pulse output (Figure Flash will cause active both pulse mode tone mode. pulse mode, remains state times. tone mode, outputs dual single tone. Detailed timing diagram tone mode shown Figure 2(a,
OUTPUT FREQUENCY Specified 1209 1336 1477 Actual 1216 1332 1472 Error +0.28 -0.52 -0.47 +0.74 +0.57 -0.30 -0.34
MUTE
MODE
DTMF
VDD,
Power input pins. break make ratio 60:40 66.6:33.3 This function DTMF mode.
Preliminary W91312N
BLOCK DIAGRAM
MODE
SYSTEM CLOCK GENERATION
READ/WRITE COUNTER KEYBOARD INTERFACE
CONTROL LOGIC PULSE CONTROL LOGIC
MUTE
COLUMN
LOCATION LATCH
DTMF
CONVERTER
COLUMN PROGRAMMABLE COUNTER
DATA LATCH DECODER
FUNCTIONAL DESCRIPTION Keyboard Operation
R/P2
R/P1
R/P1, R/P2: Redial pause function key, sec. sec. tone mode pulse mode Flash keys, flash break time One-key redial function
R/P: R/P1 R/P2.
Notes: D1', Dn': */T,
Publication Release Date: 2000 Revision
Preliminary W91312N
Normal Dialing
HOOK will dialed out. Dialing length unlimited, redial inhibited length oversteps digits.
Redialing
HOOK BUSY, COME HOOK HOOK
execute redial function only first key-in after off-hook; otherwise, will
execute pause function.
Access Pause
HOOK pause function stored memory. pause function executed normal dialing memory dialing. pause function timing diagram shown Figure
Pulse-to-tone (*/T)
HOOK mode switch pulse mode, then output signal will Pause, D1', D2', (Pulse) (Tone)
mode switch tone mode, then output signal will (Tone) (Pause) (Tone)
dialer remains tone mode when digits have been dialed reset pulse mode only going on-hook. function timing diagram shown Figure
Flash
HOOK Flash can't stored digit memory. system will return initial state after break time finished. flash function timing diagram shown Figure
Preliminary W91312N
ABSOLUTE MAXIMUM RATINGS
PARAMETER Supply Voltage Input/Output Voltage SYMBOL VDD-VSS Power Dissipation Operating Temperature Storage Temperature TOPR TSTG RATING -0.3 +7.0 -0.3 +0.3 -0.3 +0.3 +125 UNIT
Note: Exposure conditions beyond those listed under Absolute Maximum Ratings adversely affect life reliability device.
CHARACTERISTICS
(VDD-VSS 2.5V, Fosc. 3.58 MHz, outputs unloaded)
PARAMETER Operating Voltage Operating Current Standby Current Memory Retention Current DTMF Output Voltage Pre-emphasis DTMF Distortion DTMF Output Level DTMF Output Sink Current Output Sink Current MUTE Output Sink Current
Pull-high Resistor
SYM. VTDC Tone Pulse
CONDITIONS
MIN.
TYP. 0.15
MAX.
UNIT mVrms
load, entry 1.0V group, Col/Row, 5.5V 5.5V 5.5V 0.5V 0.5V 0.5V
Publication Release Date: 2000 Revision
Preliminary W91312N
Characteristics, continued
PARAMETER Keypad Input Drive Current Keypad Input Sink Current Keypad Resistance
SYMBOL
CONDITIONS 2.5V
MIN.
TYP.
MAX.
UNIT
CHARACTERISTICS
PARAMETER Keypad Active Debounce Release Debounce Pre-digit Pre-digit Pause1 Pause2 SYMBOL TKID TKRD TPDP1 TPDP2 Interdigit Pause (Auto dialing) Make/Break Ratio DTMF Output Duration Intertone Pause Flash Break Time TIDP TITP Auto Dialing Auto Dialing Flash Pause Time Pause Time Pause Pause
Notes: Crystal parameters suggested proper operation 0.02 FOSC. 3.579545 ±0.02%. Crystal oscillator accuracy directly affects these times.
CONDITIONS
MIN.
TYP. 33.3 16.7 40:60 33:67
MAX.
UNIT
Preliminary W91312N
TIMING WAVEFORMS
TIDP
MUTE
DTMF
OSC.
OSCILLATION NORMAL DIALING
OSCILLATION
Figure 1(a). Pulse Mode Timing Diagram
TIDP
TIDP
TIDP
MUTE DTMF
OSC. HOOK
OSCILLATION AUTO DIALING
Figure 1(b). Pulse Mode Timing Diagram
Publication Release Date: 2000 Revision
Preliminary W91312N
TIming Waveforms, continued
TKRD
TKID
TITP
DTMF
MUTE
HIGH
OSC.
OSCILLATION NORMAL DIALING
Figure 2(a). Tone Mode Timing Diagram
MUTE
OSC.
OSCILLATION
Figure 2(b). Tone Mode Auto Dialing Timing Diagram
Preliminary W91312N
TIming Waveforms, continued
TKID
MUTE
DTMF
OSC.
OSCILLATION
Figure Pause Function Timing Dragram
TPDP
TIDP
TIDP
MUTE DTMF
OSC.
OSCILLATION
Figure Pulse-to-tone Function Timing Dragram
Publication Release Date: 2000 Revision
Preliminary W91312N
TIming Waveforms, continued
TKID
TKID
MUTE DTMF TITP OSC. OSCILLATION
Figure Flash Function Timing Diagram
Headquarters
Winbond Electronics (H.K.) Ltd.
Unit 9-15, 22F, Millennium City, Creation III, Kwun Tong Science-Based Industrial Park, Kowloon, Hong Kong Hsinchu, Taiwan TEL: 852-27513100 TEL: 886-3-5770066 FAX: 852-27552064 FAX: 886-3-5792766 http://www.winbond.com.tw/ Voice Fax-on-demand: -2-27197006
Winbond Electronics North America Corp. Winbond Memory Lab. Winbond Microelectronics Corp. Winbond Systems Lab.
2727 First Street, Jose, 95134, U.S.A. TEL: 408-9436666 FAX: 408-5441798
Taipei Office
11F, 115, Sec. -Sheng East Rd., Taipei, Taiwan TEL: 886-2-27190505 FAX: 886-2-27197502
Note: data specifications subject change withou notice.
TYPICAL APPLICATION CIRCUIT
D1-D4 1N4004 250V
1N4148
RING HOOK HOOK
200K 100uF SPEECH NETWORK
1N4148
470K
C1815
300K
9013
0.1uF
PULSE TONE
VxR5 R/P2
R/P1
MODE DTMF
W91312N
3.58MHz MUTE 9013
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