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W91410 SERIES
TONE/PULSE DIALER WITH
SAVE FUNCTION
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
Publication Release Date: January 1995
- 1 - Revision A3
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PIN CONFIGURATION
XT
MUTE
MUTE
HKS
HKS
HKS
HKS
W91410 SERIES
C1
C3
C4
B/M
V
XT
XT
T/P MUTE
1
2
3
4
5
SS
6
7
8
9
18
17
16
15
14
13
12
11
10
R4
R3C2
R2
R1
DD
V
MODE
DTMF
DP
HKS
PIN DESCRIPTION
SYMBOL PIN I/O FUNCTION
Column-
Row Inputs
1−4
&
15−18
XT,
T/P
7, 8 I, O A built-in inverter provides oscillation with an inexpensive
9 O
MODE 13 I Pulling mode pin to VSS places the dialer in tone mode. Pulling
10 I Hook switch input.
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 µC can also be used. A valid key entry is defined as a
single row being connected to a single column.
3.579545 MHz crystal or ceramic resonator.
The T/P
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 pin to VDD places the dialer in pulse mode (10 ppS).
Leaving mode pin floating places the dialer in pulse mode (20 ppS).
= 1: On-hook state. Chip in sleeping mode, no operation.
= 0: Off-hook state. Chip enabled for normal operation.
The
pin is pulled to VDD by an internal resistor.
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W91410 SERIES
DP
Pin Description, continued
SYMBOL PIN I/O FUNCTION
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 %
R1
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
VDD, VSS 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.
Publication Release Date: January 1995
- 3 - Revision A3
Page 4
BLOCK DIAGRAM
W91410 SERIES
XT
XT
ROW
(R1 to R4)
COLUMN
(C1 to C4)
DTMF
KEYBOARD
INTERFACE
D/A
CONVERTER
HKS
B/M
MODE
READ/WRITE
COUNTER
RAM
LOCATION
LATCH
ROW & COLUMN
PROGRAMMABLE
COUNTER
SYSTEM CLOCK
GENERATION
CONTROL
LOGIC
PULSE
CONTROL
LOGIC
DATA LATCH
& DECODER
T/P MUTE
DP
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1 C2 C3 C4
1 2 3 SAVE R1
4 5 6 F R2
7 8 9
* 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
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P→T
R3
Page 5
Normal Dialing
W91410 SERIES
OFF HOOK , D1 , D2
1. D1, D2, ..., Dn will be dialed out.
2. Dialing length is unlimited, but redial is inhibited if length oversteps 32 digits.
, …,
Dn
Redialing
OFF HOOK , D1 , D2
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.
, …,
Dn BUSY, COME ON HOOK , OFF HOOK , R/P
Access Pause
OFF HOOK , D1 , D2 , R/P , D3
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.
, …,
Dn
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,
(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.
P→T
D1, D2, ..., Dn,
Publication Release Date: January 1995
- 5 - Revision A3
Page 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.
W91410 SERIES
OFF HOOK , D1 , D2
1. If the dialing of D1 to Dn is finished and
copied to the SAVE memory.
ON HOOK , OFF HOOK , SAVE
2. D1 to Dn will be dialed out after the SAVE key is pressed.
, …,
Dn , SAVE
SAVE key is pressed, D1 to Dn will be
the
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL RATING UNIT
DC Supply Voltage VDD−VSS -0.3 to +7.0 V
Input/Output Voltage VIL VSS -0.3 V
VIH VDD +0.3 V
VOL VSS -0.3 V
VOH VDD +0.3 V
Power Dissipation PD 120 mW
Operating Temperature TOPR -20 to +70
Storage Temperature TSTG -55 to +125
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability
of the device.
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°C
°C
Page 7
W91410 SERIES
HKS
HKS
DP
MUTE
HKS
DC CHARACTERISTICS
(VDD−VSS = 2.5V, Fosc. = 3.58 MHz, TA = 25° C, all outputs unloaded)
PARAMETER SYMBOL CONDITIONS MIN. TYP.MAX. UNIT
Operating Voltage VDD 2.0 - 5.5 V
Operating Current IOP Tone - 0.3 0.5 mA
Pulse - 0.15 0.3 mA
Standby Current ISB
Memory Retention
Current
DTMF Output
Voltage
Pre-emphasis Col/Row, VDD = 2.0 to 5.5V 1 2 3 dB
DTMF Distortion THD
DTMF Output DC
Level
DTMF Output Sink
Current
Output Sink
Current
T/P
Sink Current
Resistor
Keypad Input Drive
Current
Output
I/P Pull-high
IMR
VTO
VTDC
ITL VTO = 0.5V 0.2 - - mA
IPL VPO = 0.5V 0.5 - - mA
IML VMO = 0.5V 0.5 - - mA
RKH - 300 -
IKD VI = 0V 30 - -
= 0, No load,
& No key entry
= 1, VDD = 1.0V
Row group, RL = 5 KΩ
RL = 5 KΩ, VDD = 2.0 to 5.5V
RL = 5 KΩ, VDD = 2.0 to 5.5V
- - 15
- - 0.2
130 150 170 mVrms
- -30 -23 dB
1.0 - 3.0 V
µA
µA
KΩ
µA
Keypad Input Sink
Current
Keypad Resistance - - 5.0
IKS VI = 2.5V 200 400 -
Publication Release Date: January 1995
- 7 - Revision A3
µA
KΩ
Page 8
W91410 SERIES
AC CHARACTERISTICS
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
Keypad Active in Debounce TKID - 20 - mS
Key Release Debounce TKRD - 20 - mS
Pre-digit Pause
Pre-digit Pause
1
TPDP1 B/M = 1 - 40 - mS
10 ppS B/M = 0 - 33.3 -
2
TPDP2 B/M = 1 - 20 - mS
20 ppS B/M = 0 - 16.7 -
Interdigit Pause (Auto
TIDP 10 ppS - 800 - mS
dialing)
20 ppS - 500 -
Make/Break Ratio M/B B/M = 1 - 40:60 - %
B/M = 0 - 33:67 DTMF Output Duration TTD Auto Dialing - 100 - mS
Intertone Pause TITP Auto Dialing - 100 - mS
Flash Break Time TFB W91414 - 73 - mS
W91414A - 100 -
W91412A - 300 -
W91412/W91416 - 600 Flash Pause Time TFP W91414A - 100 - mS
W91414 - 140 -
W91412A 300
W91412/W91416 - 600 Pause Time TP W91412 - 2.0 - S
W91414/A/W9141
- 3.6 -
6
Notes:
1. Crystal parameters suggested for proper operation are Rs < 100 Ω, 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.
Publication Release Date: January 1995
- 7 - Revision A3
Page 9
TIMING WAVEFORMS
HKS
W91410 SERIES
KEY IN
DP
T/P MUTE
DTMF
OSC.
HKS
KEY IN
4
T
KID
B M
T
PDP
2
T
IDP
LOW
OSCILLATION
NORMAL DIALING
T
IDP
Figure 1(a). Pulse Mode Timing Diagram
R/P
2
OSCILLATION
T
IDP
DP
T/P MUTE
DTMF
OSC.
B
M
T
PDP
T
IDP
LOW
ON HOOK
Figure 1(b). Pulse Mode Timing Diagram
- 8 -
OSCILLATION
AUTO DIALING
T
IDP T
IDP
Page 10
Timing Waveforms, continued
HKS
W91410 SERIES
KEY IN
DTMF
T/P MUTE
OSC.
KEY IN
DP
HKS
T
T
KID
T
TD
KRD
T
ITP
HIGH
OSCILLATION
NORMAL DIALING
Figure 2(a). Tone Mode Timing Diagram
R/P
T
KRD
T
ITP
T
KID
T
OSCILLATION
ITP
DTMF
T/P MUTE
DP
OSC.
T
KID
TTDT
ITP
HIGH
OSCILLATION
Figure 2(b). Tone Mode Auto Dialing Timing Diagram
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T
ITP
Page 11
Timing Waveforms, continued
HKS
W91410 SERIES
KEY IN
T/P MUTE
DTMF
OSC.
KEY IN
DP
HKS
4 2
T
KID
B M
T
PDP
T
LOW
R/P
IDP
OSCILLATION
2
M
B
T
IDP
Figure 3. Pause Function Timing Dragram
TP
TKID
84 2
B
M
T
IDP
T
P
DP
T/P MUTE
DTMF
OSC.
B M
TPDP
B
M
T
IDP
T
IDP
T
P
OSCILLATION
Figure 4. Pulse-to-Tone Function Timing Dragram
Publication Release Date: January 1995
- 11 - Revision A3
Page 12
W91410 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
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.
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
Publication Release Date: January 1995
- 13 - Revision A3
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