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W9145 SERIES 15-MEMORY TONE/PULSE DIALER WITH LOCK AND HANDFREE FUNCTIONS
GENERAL DESCRIPTION
The W9145 series are Si-gate CMOS ICs that provide the necessary signals for either pulse or tone dialing. The W9145 series feature a key tone function, handfree dialing, a lock function, thirteen 16digit automatic dialing memories, and two by 32-digit for redial and save memory.
FEATURES
* * * * * * * * * * * * * * * * * * * * *
DTMF/Pulse switchable dialer Two by 32 digits for redial and save memory Three by 16 digits for one-touch direct repertory Ten by 16 digits for two-touch indirect repertory Unlimited dialing length (redial inhibited if dialing length exceeds 32 digits in normal dialing) Auto Pause Access for PBX and toll service operations (3.1 seconds per pause) Easy operation with redial, store, auto and pause keypads Key tone output for recognition of valid keypad entry Call disconnect (CD) key for line break operation Mute key for speech mute Flash time: 98 mS, 305 mS or 600 mS Minimum tone output duration: 93 mS Minimum intertone pause: 93 mS 0 or 9 dialing inhibition pin for PABX system or long distance dialing lock out Automatic switching from pulse mode to tone mode by */T key operation Break/make ratio pin selectable Uses Form A keyboard or standard 5 x 5 matrix keyboard Uses inexpensive 3.579545 MHz television color-burst crystal Internally generated power-on reset Packaged in 22/24-pin DIP The different dialers in the W9145 series are shown in the following table: TYPE NO. W9145 W9145A W9145L W9145AL PULSE (ppS) 10 10 10 10 FLASH 98/305/600 98/305/600 98/305/600 98/305/600 B/M Pin Pin Pin Pin HANDFREE No Yes No Yes LOCK No No Yes Yes
PIN CONFIGURATIONS
Publication Release Date: August 1996 Revision A4
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W9145 SERIES
C1 C1 C2 C3 C4 VSS XT XT T/P MUTE HKS DP/C5 DTMF 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 VDD B/M TEST MODE X MUTE KT C2 C3 C4 VSS XT XT T/P MUTE HKS DP/C5 DTMF 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 VDD B/M TEST MODE X MUTE KT HFO
W9145
W9145A
C1 C1 C2 C3 C4 VSS XT XT T/P MUTE HKS DP/C5 DTMF 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 VDD B/M LOCK MODE X MUTE KT C2 C3 C4 VSS XT XT T/P MUTE HKS DP/C5 DTMF 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 VDD B/M LOCK MODE X MUTE KT HFO
W9145L
W9145AL
PIN DESCRIPTION
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W9145 SERIES
SYMBOL ColumnRow Inputs 22-PIN 1-4 & 18-22 24-PIN 1-4 & 20-24 I/O I FUNCTION Keyboard inputs may be connected to either a standard keyboard, an inexpensive signal contact (Form A) keyboard, or electronic input from a C. A valid key entry is defined by a single row being connected to a single column. A built-in inverter provides oscillation by means of an inexpensive 3.579545 MHz crystal or ceramic resonator. The T/P MUTE is a conventional CMOS inverter that pulls to VDD in the absence of keypad input and pulls to VSS when an address keypad entry is sensed (excluding the * and # keypads in pulse mode). When any keypad in row 5 and column 5 is pushed, the mute out remains at high level. Pull to VSS to enable tone mode. Pull to VDD to enable pulse mode (10 ppS). Hook switch input. When pulled to high, chip is in on-hook state (no operation). When pulled to low, chip is in offhook state (enabled for normal operation). This pin is pulled to VDD by internal resistor. Note: This pin operates in conjunction with the handfree control pins; for further information see description of handfree control pins below. B/M = 1: Break/Make ratio is 60:40. B/M = 0: Break/Make ratio is 67:33. This pin has no function in tone mode. VDD, VSS X MUTE 17, 5 13 19, 5 15 I O Power input pins. The X MUTE is a conventional CMOS inverter that in tone mode is active while a DTMF signal is being transmitted. In pulse mode, this output remains low at all times.
XT, XT T/P MUTE
6, 7 8
6, 7 8
I, O O
MODE
HKS
14 9
16 9
I I
B/M
16
16
I
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Publication Release Date: August 1996 Revision A4
W9145 SERIES
Pin Description, continued
SYMBOL
HFI , HFO
22-PIN -
24-PIN 12, 13
I/O I, O
FUNCTION Handfree control pins. A low pulse on HFI toggles on the handfree control state. Status of the handfree control state is indicated in the following table:
CURRENT STATE HOOK SW. On Hook Off Hook On Hook Off Hook Off Hook HFO Low High High Low 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
KT
12
14
O
LOCK
15 (W9145L
only)
17 (W9145AL
only)
I
HFI pin is pulled to VDD by internal resistor. Key tone signal output. A 1.2 KHz key tone will be generated when any key is depressed in pulse mode or when function keys are depressed in tone mode. The function of this terminal is to prevent "0" dialing in and "9" dialing under PABX system long distance call control. When the first key input after reset is 0 or 9, all key inputs, including the 0 or 9 key, become invalid and the chip generates no output. The telephone is reinitialized by a reset.
LOCK PIN VDD Floating VSS FUNCTION Normal dialing mode "0," "9" dialing inhibited "0" dialing inhibited
TEST
15
(W9145 only)
17 (W9145A
only)
I
During normal operation, the TEST pin should be tied to VDD, thereby inhibiting the single tone and setting the pulse rate to 10 ppS. This pin is a CMOS inverter output. The timing diagram is shown in Figure 1. Flash key will cause DP / C5 to go active in either pulse or tone mode.
DP / C5
10
10
O
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W9145 SERIES
Pin Description, continued
SYMBOL DTMF
22-PIN 11
24-PIN 11
I/O O
FUNCTION In pulse mode, remains in low state at all times. In tone mode, will output a dual or single tone. Detailed timing diagram for tone mode is shown in Figure 2(a, b).
OUTPUT FREQUENCY (Hz) 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
BLOCK DIAGRAM
XT
XT
HKS MODE
SYSTEM CLOCK GENERATOR
B/M
HFI LOCK TEST READ/WRITE COUNTER ROW (R1 to R5) KEYBOARD INTERFACE RAM CONTROL LOGIC PULSE CONTROL LOGIC
X MUTE
T/P MUTE KT
HFO DP/C5
COLUMN (C1 to C4)
LOCATION LATCH
DTMF
D/A CONVERTER
ROW & COLUMN PROGRAMMABLE COUNTER
DATA LATCH & DECODER
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Publication Release Date: August 1996 Revision A4
W9145 SERIES
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1 1 4 7 */T RD
* * * * * * * * * *
C2 2 5 8 0 S
C3 3 6 9 # A
C4 M1 M2 M3 SAVE P
DP /C5
MUTE CD F1 F2 F3
R1 R2 R3 R4 R5
MUTE: Mute key CD: Call Disconnect */T: * & PT key RD: One-key Redial S: Store A: Auto dialing P: Pause M1 to M3: Memory 1 to 3 SAVE: Save Memory F1, F2, F3: 98/305/600 mS
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
1. OFF HOOK (or ON HOOK & HFI o ), D1 , D2 , ..., Dn , BUSY RD a. The one-key redialing function timing diagram is shown in Figure 4. b. Once dialing of D1 to Dn is finished, pressing D1 to Dn RD key will cause the pulse output pin finished, RD key will be ignored. to go low for 2.2 seconds break time and 600 mS pause will automatically be added. c. If the pulses of the dialed number have the not
2.
OFF HOOK (or ON HOOK
,
D1 &
,
D2
, ..., ),
Dn RD
BUSY, Come
ON HOOK
,
OFF HOOK
HFI o
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W9145 SERIES
Or ( ON HOOK , RD & HFI o ), D1 , D2 , ..., Dn , BUSY, HFI o , Come
HFI o If RD
is the first key after off-hook, only the redialing function will be executed and the pulse
output pin will not go low for the break time of 2.2 seconds.
Access Paus
OFF HOOK (or ON HOOK & HFI o ), D1 , D2 , P , D3 , ..., Dn
1. The pause function can be stored in memory. 2. The pause function may be executed in normal dialing, redialing, or repertory dialing. 3. The pause function timing diagram is shown in Figure 5.
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 (3.1S) 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 device can be reset to pulse mode only by going on-hook; device remains in tone mode when the digits have been dialed out. 4. The PT function timing diagram is shown in Figure 6.
Flash
OFF HOOK (or ON HOOK & HFI o ), F 1. Flash key cannot be stored as a digit in memory. 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 7.
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Publication Release Date: August 1996 Revision A4
W9145 SERIES
Number Store
1. OFF HOOK Mn (or Ln ) (or ON HOOK (or & HFI o ), & D1 , D2 ) , ..., Dn , S , S ,
ON HOOK
ON HOOK
HFI o
a. The dialing of D1, D2, ..., Dn must be finished before S key may be pressed. b. D1, D2, ..., Dn will be stored in memory location Mn or Ln and then dialed out. c. Mn = M1 to M3; Ln = 0 to 9, *, Pause. 2. OFF HOOK Mn (or Ln ) (or ON HOOK (or & HFI o ), & S , D1 ) , D2 , ..., Dn , S ,
ON HOOK
ON HOOK
HFI o
a. D1, D2, ..., Dn will be stored in memory location Mn or Ln but will not be dialed out. b. P and */T keys can be stored as a digit in memory. In store mode, P is the pause
function key. c. The store mode is released once the store function is completed or the state of the hook switch changes.
Repertory Dialing
1. 2. OFF HOOK OFF HOOK (or (or ON HOOK ON HOOK & & HFI o HFI o ), ), Mn A , Ln
Save Key
1. OFF HOOK (or D1 to ON HOOK Dn & HFI o ), D1 , D2 , ..., SAVE
If the dialing of 2. D1 ON HOOK to Dn
is finished, pressing the SAVE key will cause D1 to Dn to be
duplicated to the SAVE memory. Come OFF HOOK , SAVE
will be dialed out after the SAVE key is pressed.
Call Disconnect
OFF HOOK CD
The DP /C5 pin will go low (line break) when the CD key is pressed and the system will be reset to initial state.
Mute Key
OFF HOOK MUTE The mute output will be switched on as long as the MUTE key is depressed. -8-
W9145 SERIES
CD and MUTE key function timing diagram is shown in Figure 8.
Mixed Dialing
OFF HOOK 1. 2. 3. (or ON HOOK + + & HFI o + + ), Normal dialing Repertory dialing
Normal dialing
Repertory dialing Normal dialing +
Repertory dialing Redialing +
Normal dialing
Repertory dialing
a. Redialing and SAVE dialing are valid for first key-in only. b. The second sequence should not be performed until the first sequence is dialed out completely.
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 +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 = 2.5V, FOSC = 3.58 MHz, TA = 25 C, unless otherwise noted
PARAMETER Operating Voltage Operating Current Memory Retention Standby Current Tone Output
SYM. VDD IOP IMR IS VTO
CONDITIONS Tone Pulse Tone, Unloaded Pulse, Unloaded HKS = 1, TA = 25 C VDD = 1.0V HKS = 0, VDD = 2.5V Row Group, RL = 5 K
MIN. 2.0 2.0 130
TYP. 0.6 0.2 0.1 0.1 150
MAX. 5.5 5.5 2 0.5 0.2 5 170
UNIT V V mA mA A A Vrms
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Publication Release Date: August 1996 Revision A4
W9145 SERIES
DC Characteristics, continued
PARAMETER Pre-Emphasis DTMF Distortion HFO Drive/Sink Current Tone Output External Load Impedance Tone Output DC Level Tone Output Sink Current Pulse Output Drive/Sink Current T/P MUTE Output Drive/Sink Current Key Tone Output Drive/Sink Current X MUTE Drive/Sink Current Input Voltage Low Input Voltage High Keypad Input Drive/Sink Current Control Pin Input
SYM.
CONDITIONS Column Group/Row Group VDD = 2.0-5.5V
MIN. 1 0.5 0.5 5 1.0 0.2 -0.2 0.2 -0.2 2 -0.5 0.5 -0.2 0.2 GND 0.7 VDD
TYP. 2 -30 30 400 -
MAX. 3 -23 3.0 0.3 VDD VDD 80 25
UNIT dB dB mA mA K V mA mA mA mA mA mA mA mA mA V V A A A
THD IHFH IHFL RL VDC ITL IPH IPL IMH IML IKH IKL ILH IIL VIL VIH IKD IKS IIN
RL = 5 K VHFH = 2.0V VHFL = 0.5V THD < -23 dB VDD = 2.0-5.5V VTO = 0.5V VPO = 2.0V VPO = 0.5V VMO = 2.0V VMO = 0.5V VKO = 2.0V VKL = 0.5V VLO = 2.0V VLO = 0.5V
VI = 0V VI = 2.5V HKS , MODE, TEST , B/M
10 200 -
AC CHARACTERISTICS
PARAMETER Key-in Debounce Key-release Debounce Key tone Delay SYM. TKID TKRD TKD CONDITIONS MIN. TYP. 20 20 20 MAX. UNIT mS mS mS
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W9145 SERIES
AC Characteristics, continued
PARAMETER One-key Redial Break Time One-key Redial Break Pause Time Pulse Mute Delay Pre-digit Pause Pulse Rate Interdigit Pause Make/Break Ratio Tone Duration Intertone Pause Flash Break Time
SYM. TRB TRP TMD TPDP TPR TIDP M:B TTD TITP TFB
CONDITIONS
MIN. -
TYP. 2.2 600 40 33.3 40 33.3 10 800 40:60 33.3:66.7 93 93 98 305 600 3.1 1.2
MAX. -
UNIT S mS mS mS mS mS ppS mS % % mS mS mS mS mS S KHz
B/M = 1 B/M = 0 B/M = 1 B/M = 0 Mode = 1 B/M = 1 B/M = 0 Auto Dialing Auto Dialing F1 F2 F3
-
Pause Time Key Tone Frequency
TP f8
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Publication Release Date: August 1996 Revision A4
W9145 SERIES
TIMING WAVEFORMS
HKS
KEY IN
4 TKID
2 TKRD
R
KT
DP/C5 TPDP T/P MUTE DTMF X MUTE OSC.
TIDP
TMD LOW LOW
OSCILLATION MANUAL DIALING
OSCILLATION AUTO DIALING
Figure 1. Pulse Mode Dialing Timing Diagram
HKS KEY IN TKID DTMF TTD X MUTE TTD TITP TITP TKRD
TKID
TKRD
T/P MUTE DP/C5 TKD KT OSC.
OSCILLATION
OSCILLATION
Figure 2(a). Tone Mode Normal Dialing Diagram
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W9145 SERIES
Timing Waveforms, continued
HKS
KEY IN
R TKID
DTMF
TTD TITP TITP
X MUTE
T/P MUTE
DP/C5 KT OSC. ON HOOK OSCILLATION
Figure 2(b). Tone Mode Redialing Timing Diagram
HKS
OFF HOOK
ON HOOK
HFI DP/C5 HFO T/P MUTE X MUTE CHIP ENABLE LOW
Figure 3(a). Handfree Function Timing Diagram
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Publication Release Date: August 1996 Revision A4
W9145 SERIES
Timing Waveforms, continued
HKS
HFI DP/C5 HFO
T/P MUTE X MUTE CHIP ENABLE
LOW
Figure 3(b). Handfree Function Timing Diagram
HKS HFI DP/C5 HFO
ON HOOK
T/P MUTE X MUTE CHIP ENABLE
LOW
Figure 3(c). Handfree Function Timing Diagram
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W9145 SERIES
Timing Waveforms, continued
LOW
HKS KEY IN
R
DP/C5
T RB TRP TKID
BM TPDP TIDP
B TIDP
T/P MUTE X MUTE DTMF OSC.
LOW LOW
OSCILLATION
Figure 4. Pulse Mode Timing Diagram
HKS KEY IN
4 2 P 2
TKID
TIDP TIDP TIDP
DP/C5
TPDP
TIDP
T/P MUTE TIP DTMF X MUTE OSC.
LOW LOW
OSCILLATION
Figure 5. Pause Function Timing Diagram
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Publication Release Date: August 1996 Revision A4
W9145 SERIES
Timing Waveforms, continued
HKS
*/T
KEY IN DP/C5
4
2
2
TKID TIDP TIDP
TPDP T/P MUTE
TP DTMF X MUTE OSC.
OSCILLATION LOW
TITP
Figure 6. PT Operation Timing Diagram in Normal Dialing
HKS KEY IN
F
LOW
TKID DP/C5 TFB
T/P MUTE X MUTE DTMF OSC.
OSCILLATION LOW LOW
Figure 7. Flash Operation Timing Diagram
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W9145 SERIES
Timing Waveforms, continued
HKS
KEY IN
CD
MT
MT
CD
MT
HFI
DP/C5 HFO T/P MUTE X MUTE KT CHIP ENABLE
(MT = MUTE KEY)
Figure 8. Mute Key Operation Timing Diagram
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Publication Release Date: August 1996 Revision A4
W9145 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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