W91410 SERIES
TONE/PULSE DIALER WITH
SAVE FUNCTION
Publication Release Date: January 1995
- 1 -
Revision A3
GENERAL DESCRIPTION
The W91410 series are monolithic ICs that provide the necessary signals for either pulse or tone
dialing. The W91410 series feature a redial and save memory.
FEATURES
DTMF/Pulse switchable dialer
Two by 32 digits for redial and save memory
Pulse-to-tone (P
T) keypad for long distance call operation
Break/Make ratio is selectable by pin option
Uses 4
4 keyboard
Easy operation with redial, flash, pause, and P
T keypads
Flash, pause, P
T (Pulse-to-tone) can be stored as a digit in memory
Minimum tone output duration: 100 mS
Minimum intertone pause: 100 mS
On-chip power-on reset
Uses 3.579545 MHz crystal or ceramic resonator
Packaged in 18-pin plastic DIP
The different dialers in the W91410 series are shown in the following table:
TYPE NO.
PULSE (ppS)
FLASH (mS)
FLASH PAUSE (mS)
PAUSE (S)
W91412/A
10/20
600/300
600/300
2.0
W91414/A
10/20
73/100
140/100
3.6
W91416
10/20
600
600
3.6
W91410 SERIES
- 2 -
PIN CONFIGURATION
1
16
R3
C2
C3
C4
2
3
4
5
6
11
12
13
14
15
R1
R2
DTMF
DD
V
7
8
9
10
17
18
XT
C1
R4
V
SS
XT
T/P MUTE
MODE
DP
B/M
HKS
PIN DESCRIPTION
SYMBOL
PIN
I/O
FUNCTION
Column-
Row Inputs
1
-
4
&
15
-
18
I
The keyboard input may be from either the standard 4
4 keyboard
or an inexpensive single contact (form A) keyboard. Electronic
input from a
C can also be used. A valid key entry is defined as a
single row being connected to a single column.
XT, XT
7, 8
I, O
A built-in inverter provides oscillation with an inexpensive
3.579545 MHz crystal or ceramic resonator.
T/P MUTE
9
O
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 sequence and flash break. Otherwise, it is switched
off.
MODE
13
I
Pulling mode pin to V
SS
places the dialer in tone mode. Pulling
mode pin to V
DD
places the dialer in pulse mode (10 ppS).
Leaving mode pin floating places the dialer in pulse mode (20 ppS).
HKS
10
I
Hook switch input.
HKS = 1: On-hook state. Chip in sleeping mode, no operation.
HKS = 0: Off-hook state. Chip enabled for normal operation.
The HKS pin is pulled to V
DD
by an internal resistor.
W91410 SERIES
Publication Release Date: January 1995
- 3 -
Revision A3
Pin Description, continued
SYMBOL
PIN
I/O
FUNCTION
DP
11
O
N-channel open drain dialing pulse output (Figure 1). Flash key will
cause DP to go active in both pulse and tone mode.
DTMF
12
O
In pulse mode, remains in low state at all times. 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
Actual
Error %
R2
R3
R4
C1
C2
C3
697
770
852
941
1209
1336
1477
699
766
848
948
1216
1332
1472
+0.28
-0.52
-0.47
+0.74
+0.57
-0.30
-0.34
R1
V
DD
, V
SS
14, 6
I
Power input pins.
B/M
5
I
The break make ratio is 60:40 if B/M = 1 and is 66.6:33.3 if B/M =
0. This pin has no function in DTMF mode.
W91410 SERIES
- 4 -
BLOCK DIAGRAM
HKS
T/P MUTE
COLUMN
ROW
XT XT
DP
(R1 to R4)
DTMF
SYSTEM CLOCK
GENERATION
READ/WRITE
COUNTER
RAM
LOCATION
LATCH
ROW & COLUMN
PROGRAMMABLE
COUNTER
DATA LATCH
& DECODER
KEYBOARD
INTERFACE
(C1 to C4)
D/A
CONVERTER
PULSE
CONTROL
LOGIC
CONTROL
LOGIC
MODE
B/M
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1
C2
C3
C4
1
2
3
SAVE
R1
4
5
6
F
R2
7
8
9
P
T
R3
*
0
#
R/P
R4
F: Flash key
R/P: Redial and pause function key
P
T: Pulse mode to tone mode
SAVE: Save memory key
W91410 SERIES
Publication Release Date: January 1995
- 5 -
Revision A3
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 oversteps 32 digits.
Redialing
OFF HOOK
,
D1
,
D2
,
...
,
Dn
BUSY, COME
ON HOOK
,
OFF HOOK
,
R/P
The
R/P
key can execute the redial function only as the first key-in after off-hook; otherwise, it
will execute the pause function.
Access Pause
OFF HOOK
,
D1
,
D2
,
R/P
,
D3
,
...
,
Dn
1. The pause function can be stored in memory.
2. The pause function is executed in normal dialing or memory dialing.
3. The pause function timing diagram is shown in Figure 3.
Pulse-to-tone (P
T)
OFF HOOK
,
D1
,
D2
,
...
,
Dn
,
P
T
,
D1'
,
D2'
,
...
,
Dn'
1. If the mode switch is set to pulse mode, then the output signal will be:
D1, D2, ..., Dn, Pause, D1', D2', ..., Dn'
(Pulse)
(Tone)
2. If the mode switch is set to tone mode, then the output signal will be:
D1, D2, ..., Dn,
P
T
D1, D2, ..., Dn,
(Tone)
(Pause)
(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 P
T function timing diagram is shown in Figure 4.
W91410 SERIES
- 6 -
Flash
OFF HOOK
,
F
1. Flash key can be stored as a digit in memory.
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.
OFF HOOK
,
D1
,
D2
,
...
,
Dn
,
SAVE
1. If the dialing of
D1
to
Dn
is finished and
the
SAVE
key is pressed, D1 to Dn will be
copied to the SAVE memory.
ON HOOK
,
OFF HOOK
,
SAVE
2. D1 to Dn will be dialed out after the SAVE key is pressed.
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATING
UNIT
DC Supply Voltage
V
DD
-
V
SS
-0.3 to +7.0
V
Input/Output Voltage
V
IL
V
SS
-0.3
V
V
IH
V
DD
+0.3
V
V
OL
V
SS
-0.3
V
V
OH
V
DD
+0.3
V
Power Dissipation
P
D
120
mW
Operating Temperature
T
OPR
-20 to +70
C
Storage Temperature
T
STG
-55 to +125
C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability
of the device.
W91410 SERIES
Publication Release Date: January 1995
- 7 -
Revision A3
DC CHARACTERISTICS
(V
DD
-
V
SS
= 2.5V, Fosc. = 3.58 MHz, T
A
= 25
C, all outputs unloaded)
PARAMETER
SYMBOL
CONDITIONS
MIN. TYP
.
MAX.
UNIT
Operating Voltage
V
DD
2.0
-
5.5
V
Operating Current
I
OP
Tone
-
0.3
0.5
mA
Pulse
-
0.15
0.3
mA
Standby Current
I
SB
HKS = 0, No load,
& No key entry
-
-
15
A
Memory Retention
Current
I
MR
HKS = 1, V
DD
= 1.0V
-
-
0.2
A
DTMF Output
Voltage
V
TO
Row group, R
L
= 5 K
130
150
170
mVrms
Pre-emphasis
Col/Row, V
DD
= 2.0 to 5.5V
1
2
3
dB
DTMF Distortion
T
HD
R
L
= 5 K
, V
DD
= 2.0 to 5.5V
-
-30
-23
dB
DTMF Output DC
Level
V
TDC
R
L
= 5 K
, V
DD
= 2.0 to 5.5V
1.0
-
3.0
V
DTMF Output Sink
Current
I
TL
V
TO
= 0.5V
0.2
-
-
mA
DP Output Sink
Current
I
PL
V
PO
= 0.5V
0.5
-
-
mA
T/P MUTE Output
Sink Current
I
ML
V
MO
= 0.5V
0.5
-
-
mA
HKS I/P Pull-high
Resistor
R
KH
-
300
-
K
Keypad Input Drive
Current
I
KD
V
I
= 0V
30
-
-
A
Keypad Input Sink
Current
I
KS
V
I
= 2.5V
200
400
-
A
Keypad Resistance
-
-
5.0
K
W91410 SERIES
Publication Release Date: January 1995
- 7 -
Revision A3
AC CHARACTERISTICS
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Keypad Active in Debounce
T
KID
-
20
-
mS
Key Release Debounce
T
KRD
-
20
-
mS
Pre-digit Pause
1
T
PDP
1
B/M = 1
-
40
-
mS
10 ppS
B/M = 0
-
33.3
-
Pre-digit Pause
2
T
PDP
2
B/M = 1
-
20
-
mS
20 ppS
B/M = 0
-
16.7
-
Interdigit Pause (Auto
dialing)
T
IDP
10 ppS
-
800
-
mS
20 ppS
-
500
-
Make/Break Ratio
M/B
B/M = 1
-
40:60
-
%
B/M = 0
-
33:67
-
DTMF Output Duration
T
TD
Auto Dialing
-
100
-
mS
Intertone Pause
T
ITP
Auto Dialing
-
100
-
mS
Flash Break Time
T
FB
W91414
-
73
-
mS
W91414A
-
100
-
W91412A
-
300
-
W91412/W91416
-
600
-
Flash Pause Time
T
FP
W91414A
-
100
-
mS
W91414
-
140
-
W91412A
300
W91412/W91416
-
600
-
Pause Time
T
P
W91412
-
2.0
-
S
W91414/A/W9141
6
-
3.6
-
Notes:
1. Crystal parameters suggested for proper operation are Rs < 100
, Lm = 96 mH, Cm = 0.02 pF, Cn = 5 pF, Cl = 18 pF,
F
OSC.
= 3.579545 MHz
0.02%.
2. Crystal oscillator accuracy directly affects these times.
W91410 SERIES
- 8 -
TIMING WAVEFORMS
2
2
HKS
KEY IN
4
DP
T/P MUTE
B
M
T
PDP
T
IDP
T
IDP
T
IDP
OSCILLATION
NORMAL DIALING
DTMF
OSC.
LOW
OSCILLATION
T
KID
Figure 1(a). Pulse Mode Timing Diagram
HKS
KEY IN
R/P
DP
T/P MUTE
B
M
T
PDP
T
IDP
T
IDP
T
IDP
OSCILLATION
AUTO DIALING
DTMF
OSC.
ON HOOK
LOW
Figure 1(b). Pulse Mode Timing Diagram
W91410 SERIES
- 10 -
Timing Waveforms, continued
HKS
KEY IN
T/P MUTE
DTMF
T
KID
T
KRD
T
ITP
T
TD
T
KRD
T
ITP
T
KID
T
ITP
OSCILLATION
NORMAL DIALING
OSCILLATION
DP
OSC.
HIGH
Figure 2(a). Tone Mode Timing Diagram
R/P
HKS
KEY IN
DTMF
T/P MUTE
DP
T
KID
T
TD
T
ITP
T
ITP
HIGH
OSCILLATION
OSC.
Figure 2(b). Tone Mode Auto Dialing Timing Diagram
W91410 SERIES
Publication Release Date: January 1995
- 11 -
Revision A3
Timing Waveforms, continued
2
4
2
HKS
KEY IN
DP
T/P MUTE
B
M
B
T
KID
T
PDP
T
IDP
M
T
IDP
T
P
OSCILLATION
DTMF
OSC.
R/P
B
M
T
IDP
LOW
Figure 3. Pause Function Timing Dragram
8
4
2
HKS
KEY IN
DP
T/P MUTE
B
M
B
T
KID
T
PDP
T
IDP
M
T
IDP
T
P
OSCILLATION
DTMF
OSC.
T
P
Figure 4. Pulse-to-Tone Function Timing Dragram
W91410 SERIES
Publication Release Date: January 1995
- 13 -
Revision A3
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
Taipei Office
11F, No. 115, Sec. 3, Min-Sheng East Rd.,
Taipei, Taiwan
TEL: 886-2-7190505
FAX: 886-2-7197502
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
Note: All data and specifications are subject to change without notice.
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