Winbond Electronics W9145L, W9145AL, W9145A, W9145 Datasheet
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 × 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. PULSE (ppS) FLASH B/M HANDFREE LOCK
W9145 10 98/305/600 Pin No No
W9145A 10 98/305/600 Pin Yes No
W9145L 10 98/305/600 Pin No Yes
W9145AL 10 98/305/600 Pin Yes Yes
PIN CONFIGURATIONS
Publication Release Date: August 1996
- 1 - Revision A4
W9145 SERIES
X MUTE
X MUTE
C1
C2
C3
C4
V
SS
XT
XT
T/P MUTE
HKS
DP/C5
DTMF
C1
C2
C3
C4
V
SS
XT
XT
T/P MUTE
HKS
DP/C5
DTMF
1
2
3
4
5
6
7
8
9
10 13
11
W9145
1
2
3
4
5
6
7
8
9
10 13
11
SS
XT
XT
1
2
3
4
5
6
7
8
9
10
11 14
12
C1
22
R5
R4
21
20
R3
19
R2
18
R1
V
17
16
15
14
12
DD
B/M
TEST
MODE
X MUTE
KT
C2
C3
C4
V
T/P MUTE
HKS
DP/C5
DTMF
HFI
24
R5
23
R4
R3
22
21
R2
20
R1
19
V
DD
18
B/M
17
TEST
MODE
16
15
KT
13
HFO
W9145A
SS
XT
XT
1
2
3
4
5
6
7
8
9
10
11 14
12
C1
22
R5
R4
21
20
R3
19
R2
18
R1
V
17
16
15
14
12
DD
B/M
LOCK
MODE
X MUTE
KT
C2
C3
C4
V
T/P MUTE
HKS
DP/C5
DTMF
HFI
24
R5
23
R4
R3
22
21
R2
20
R1
19
V
DD
B/M
18
17
LOCK
MODE
16
15
KT
13
HFO
PIN DESCRIPTION
W9145L
W9145AL
- 2 -
W9145 SERIES
XT
MUTE
MUTE
HKS
SYMBOL 22-PIN 24-PIN I/O FUNCTION
ColumnRow
Inputs
XT,
T/P
MODE 14 16 I Pull to VSS to enable tone mode. Pull to VDD to enable
B/M 16 16 I B/M = 1: Break/Make ratio is 60:40.
1−4
&
18−22
6, 7 6, 7 I, O A built-in inverter provides oscillation by means of an
8 8 O
9 9 I Hook switch input. When pulled to high, chip is in on-hook
1−4
&
20−24
I Keyboard inputs may be connected to either a standard
keyboard, an inexpensive signal contact (Form A)
keyboard, or electronic input from a µC. A valid key entry
is defined by a single row being connected to a single
column.
inexpensive 3.579545 MHz crystal or ceramic resonator.
The T/P
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.
pulse mode (10 ppS).
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 = 0: Break/Make ratio is 67:33.
This pin has no function in tone mode.
is a conventional CMOS inverter that
VDD, VSS 17, 5 19, 5 I Power input pins.
X MUTE 13 15 O 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.
Publication Release Date: August 1996
- 3 - Revision A4
Pin Description, continued
HFI
HFI
HFI
LOCK
TEST
TEST
DP/C5
SYMBOL 22-PIN 24-PIN I/O FUNCTION
,
HFO
- 12, 13 I, O Handfree control pins.
A low pulse on
toggles on the handfree control state.
Status of the handfree control state is indicated in the
following table:
W9145 SERIES
CURRENT STATE
HOOK SW.
On Hook
Off Hook
On Hook
Off Hook
Off Hook
pin is pulled to VDD by internal resistor.
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 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.
15
(W9145L
only)
17
(W9145AL
only)
The function of this terminal is to prevent "0" dialing in
I
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
V
DD
Floating
FUNCTION
Normal dialing mode
"0," "9" dialing inhibited
"0" dialing inhibited
15
(W9145
only)
17
(W9145A
only)
V
SS
I
During normal operation, the
VDD, thereby inhibiting the single tone and setting the
pulse rate to 10 ppS.
10 10 O 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.
- 4 -
pin should be tied to
W9145 SERIES
Pin Description, continued
SYMBOL 22-PIN 24-PIN I/O FUNCTION
DTMF 11 11 O 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)
R1
R2
R3
R4
C1
C2
C3
Specified
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
ROW
(R1 to R5)
COLUMN
(C1 to C4)
DTMF
KEYBOARD
INTERFACE
D/A CONVERTER
HKS
MODE
READ/WRITE
COUNTER
RAM
LOCATION
LATCH
ROW & COLUMN
PROGRAMMABLE
COUNTER
HFI
XT XT
SYSTEM CLOCK
GENERATOR
CONTROL
LOGIC
LOCK
TEST
DATA LATCH
& DECODER
B/M
PULSE
CONTROL
LOGIC
X MUTE
T/P MUTE
KT
HFO
DP/C5
Publication Release Date: August 1996
- 5 - Revision A4
FUNCTIONAL DESCRIPTION
DP/C5
HFI
¡õ
HFI
¡õ
HFI
¡õ
Keyboard Operation
C1 C2 C3 C4
1 2 3 M1 MUTE R1
4 5 6 M2 CD R2
7 8 9 M3 F1 R3
*/T 0 # SAVE F2 R4
RD S A P F3 R5
• MUTE: Mute key
• CD: Call Disconnect
• */T: * & P→T 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
W9145 SERIES
Normal Dialing
OFF HOOK (or ON HOOK &
1. D1, D2, ..., Dn will be dialed out.
2. Dialing length is unlimited, but redial is inhibited if length oversteps 32 digits.
), D1 , D2 , ..., Dn
Redialing
1. OFF HOOK (or ON HOOK &
a. The one-key redialing function timing diagram is shown in Figure 4.
b. Once dialing of D1 to Dn is finished, pressing RD key will cause the pulse output pin
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 D1 to Dn have not finished,
2. OFF HOOK , D1 , D2 , ..., Dn BUSY, Come ON HOOK , OFF HOOK
(or ON HOOK &
), RD
), D1 , D2 , ..., Dn , BUSY RD
RD key will be ignored.
the
- 6 -
Loading...