Page 1
W91350N SERIES
13-MEMORY TONE/PULSE DIALER WITH
HANDFREE AND HOLD FUNCTIONS
GENERAL DESCRIPTION
The W91350N series are tone/pluse switchable telephone dialers with thirteen memories, hold
function, and a handfree dialing control circuit. Fabricated using CMOS technology, the W91350N series
offer good performance in low-voltage and low-power applications.
FEATURES
• DTMF/pulse switchable dialer
• Two by 32-digit redial memory and save memory
• Three by 16-digit one-touch direct repertory memory
• Ten by 16-digit two-touch direct repertory memory
• Cascaded dialing allowed, with unlimited dialing length
• Pulse-to-tone (*/T) keypad for long distance call operation
• Uses 5 × 5 keyboard
• Easy operation with redial, flash, pause, and */T keypads
• Pause, P→T (pulse-to-tone) can be stored as a digit in memory
• Dialing rate (10 ppS or 20 ppS) is selectable by bonding option
• On-hook debounce time: 150 msec.
• Minimum tone output duration: 93 msec. (W91354AN: 87 mS)
• Minimum intertone pause: 93 msec. (W91354AN: 87 mS)
• Flash break time (73, 100, 300, 600 msec) selectable by keypad; pause time is 1.0 sec.
• Make/break ratio (40:60 or 33.3:66.7) selectable by MODE pin
• On-chip power-on reset
• Uses 3.579545 MHz crystal or ceramic resonator
• Packaged in 18 or 20-pin plastic DIP
The different dialers in the W91350N series are shown in the following table:
•
TYPE NO. REPLACEMENT
TYPE NO.
W91350N W91350 10 600/300/73/100 Pin - 18
W91351
W91352N W91352 20 600/300/73/100 Pin - 18
W91350AN W91350A 10 600/300/73/100 Pin Yes 20
W91351A
W91352AN W91352A 20 600/300/73/100 Pin Yes 20
W91354AN New type 10 600/300/73/100 Pin Yes 20
PULSE
(ppS)
FLASH
(mS)
M/B HANDFREE
DIALING
PACKAGE
(PINS)
Note: The W91354AN is for use in France only. The pause time is not added in pulse-to-tone function mode.
Publication Release Date: May 1997
- 1 - Revision A2
Page 2
PIN CONFIGURATIONS
XT
234
789
10
HFI
HKS
DTMF
MODE
R4
R3
R2
R1
13
18
19
16
15
14
12
11
HFO
XT
XT12
3
4
7
8
9
HKS
DTMF
MODE
R4R3R2
R1
12
18
16
15
14
10
11
13
XT
MUTE
MUTE
HKS
HKS
HKS
HKS
C1
C2
C3
C4
H/P MUTE
V
SS
W91350N SERIES
1
C1
17
5
6
V
DD
C2
C3
C4
H/P MUTE
V
SS
5
6
20
17
V
DD
T/P MUTE
XT
DP/C5
W91350N/352N W91350AN/352AN/354AN
T/P MUTE
DP/C5
PIN DESCRIPTION
SYMBOL 18-PIN 20-PIN I/O FUNCTION
Column-
Row Inputs
XT,
T/P
1−4
&
15−18
1−4
&
17−20
7, 8 7, 8 I, O A built-in inverter provides oscillation with an inexpensive
9 9 O
MODE 13 15 I Pulling mode pin to VSS places the dialer in tone mode.
10 12 I Hook switch input.
The keyboard inputs may be used with either a standard
5 × 5 keyboard or an inexpensive single contact (Form A)
I
keyboard. Electronic input from a µC can also be used.
A valid key in 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 dialing sequence
and flash break time. Otherwise, it is switched off.
Pulling mode pin to VDD places the dialer in pulse mode
with M/B ratio of 40:60 (10 ppS, except for
W91352N/352AN = 20 ppS).
Floating mode pin places the dialer in pulse mode with M/B
ratio of 33.3:66.7 (10 ppS, except for W91352N/352AN =
20 ppS).
= VDD: On-hook state. Chip in sleeping mode, no
operation.
= VSS: Off-hook state. Chip is enabled for normal
operation.
pin is pulled to VDD by an internal resistor.
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Page 3
W91350N SERIES
DP/C5
R1
R3
R4
C1
C2
C3
HFI
HFI
CURRENT STATE
Input
HFO
Dialing
HFI
Pin Description, continued
SYMBOL 18-PIN 20-PIN I/O FUNCTION
11 13 O N-channel open drain dialing pulse output.
Flash key will cause DP/C5 to be active in either tone
mode or pulse mode.
The timing diagram for pulse mode is shown in Figure 1(a, b, c).
VDD, VSS 14, 6 16, 6 I Power input pins.
DTMF 12 14 O In pulse mode, this pin remains in low state at all times.
In tone mode, it will output a dual or single tone. Detailed
timing diagram for tone mode is shown in Figure 2(a, b, c).
Output Frequency
Specified Actual Error %
+0.28
-0.52
-0.47
+0.74
+0.57
-0.30
-0.34
R2
697
770
852
941
1209
1336
1477
699
766
848
948
1216
1332
1472
, HFO
- 10, 11 I, O Handfree control pins. The handfree control state is toggled
on by a low pulse on the
input pin. The status of the
handfree control state is described in the following table:
NEXT STATE
Hook SW.
On Hook
Off Hook
On Hook
Off Hook
Off Hook
HFO
Low
High
High
Low
High
HFI
HFI
HFI
Off Hook
On Hook Low
On Hook High
High
Low
Low
Low
Yes
No
Yes
Yes
No
Yes
pin is pulled to VDD by an internal resistor.
Detailed timing diagram is shown in Figure 3.
H/P MUTE 5 5 O The H/P MUTE is a conventional inverter output. During
pulse dialing, flash break or hold period, this output is active
high; otherwise, it remains in low state.
Publication Release Date: May 1997
- 3 - Revision A2
Page 4
BLOCK DIAGRAM
DP/C5
W91350N SERIES
XT XT
ROW
(R1 to R4, Vx)
COLUMN
(C1 to C4)
DTMF
KEYBOARD
INTERFACE
D/A
CONVERTER
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1 C2 C3 C4
1 2 3 S M1 R1
4 5 6 F4 M2 R2
7 8 9 A M3 R3
∗/T
0 # R/P SAVE R4
F1 F2 F3 H VX
LOCATION
LATCH
ROW & COLUMN
PROGRAMMABLE
COUNTER
READ / WRITE
COUNTER
RAM
DATA LATCH
& DECODER
SYSTEM CLOCK
GENERATOR
CONTROL
LOGIC
PULSE
CONTROL
LOGIC
HKS
HFI
MODE
H/P MUTE
T/P MUTE
DP/C5
HFO
• S: Store function key
• H: Hold function key
• A: Indirect repertory memory dialing function key
• R/P: Redial and pause function key
• SAVE: Save function key
• ∗/T: ∗ in tone mode and P→T in pulse mode
• M1, ..., M3: One-touch memory
• F1, ..., F4: Flash keys, F1 = 600 mS, F2 = 300 mS, F3 = 73 mS, F4 = 100 mS
Notes:
D1, ..., Dn, D1', ..., Dn': 0, ..., 9, */T, #
Mn: M1 , ..., M3 ; Ln: 0, ..., 9; Fn: F1, ..., F4
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Page 5
Normal Dialing
HFI
¡õ
HFI
¡õ
HFI
¡õ
HFI
¡õ
HFI
¡õ
HFI
¡õ
HFI
¡õ
W91350N SERIES
OFF HOOK , (or ON HOOK
1. D1, D2, ..., Dn will be dialed out.
2. Dialing length is unlimited, but redial is inhibited if length exceeds 32 digits in normal dialing.
&
),
D1 , D2 ,
Dn
...,
Redialing
OFF HOOK , (or ON HOOK
ON HOOK , OFF HOOK , (or ON HOOK
1. The redial memory content will be dialed out.
2. The R/P key can execute the redial function only as the first key-in after off-hook; otherwise, it
executes pause function.
3. If redialing length exceeds 32 digits, the redialing function will be inhibited.
&
),
D1 , D2 , ..., Dn Busy, Come
&
),
R/P
Number Store
OFF HOOK , (or ON HOOK
Mn ( or Ln )
1. If the sequence of the dialed digits D1, D2, ..., Dn has not
finished,
2. D1, D2, ..., Dn will be dialed out and stored in memory location.
&
),
D1 , D2 ,
Dn , S , S ,
...,
S will be ignored.
OFF HOOK , (or ON HOOK &
Mn ( or Ln )
3. D1, D2, ..., Dn will be stored in memory location but will not be dialed out.
4. R/P and */T keys can be stored as a digit in memory.
In store mode, R/P is the pause function key.
5. The store mode is released after the store function is executed or when the state of the hook
switch changes.
), S , D1 , D2 , ..., Dn , S ,
Repertory Dialing
OFF HOOK , (or ON HOOK &
OFF HOOK , (or ON HOOK &
), Mn
), A , Ln
Access Pause
Publication Release Date: May 1997
- 5 - Revision A2
Page 6
W91350N SERIES
HFI
¡õ
HFI
¡õ
HFI
¡õ
HFI
¡õ
OFF HOOK , (or ON HOOK
1. The pause function can be stored as a digit in memory.
2. The pause function is executed in normal dialing, redial dialing, or memory dialing.
3. A detailed timing diagram for the pause function is shown in Figure 4.
&
),
D1 , D2 , R/P , D3 , ..., Dn
Pulse-to-tone (*/T)
OFF HOOK , (or ON HOOK
, D2' , ..., Dn'
1. If the mode switch is set to pulse mode, then the output signal will be:
D1, D2, ..., Dn, Pause (3.6 sec.), D1', D2', ..., Dn'
(Pulse) (Tone )
The pause time will be added in all versions except for the W91354AN.
2. If the mode switch is set to tone mode, then the output signal will be:
D1, D2, ..., Dn, *, D1', D2', ..., Dn'
(Tone) (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 pulse-to-tone function timing diagram is shown in Figure 5(a, b).
&
),
D1 , D2 , ..., Dn , */T , D1'
Flash
OFF HOOK , (or ON HOOK
1. Fn = F1, ..., F4
2. The dialer will execute a flash break time of 600 mS (F1), 300 mS (F2), 73 mS (F3), or 100 mS
(F4).
In each case the flash pause time is 1.0 sec. before the next digit is dialed out.
3. Flash key cannot be stored as a digit in memory, and it has first priority among keyboard functions.
4. The system will return to the initial state after the flash pause time is finished.
5. The flash function timing diagram is shown in Figure 6.
&
),
Fn
Save
OFF HOOK , (or ON HOOK
If the dialing
of
copied to the save memory.
D1 to Dn is finished, pressing the SAVE key will cause D1 to Dn to be
&
),
D1 , D2 , ..., Dn , SAVE
Cascaded Dialing
1. Normal Dialing + Repertory Dialing + Normal Dialing
2. Repertory Dialing + Normal Dialing + Repertory Dialing
- 6 -
Page 7
W91350N SERIES
HKS
HKS
DP
3. Redialing + Normal Dialing + Repertory Dialing
Redialing and save dialing are valid as first key-in only.
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL RATING UNIT
DC Supply Voltage
Input/Output Voltage VIH VDD +0.3 V
Power Dissipation PD 120 mW
Operation Temperature TOPR -20 to +70
Storage Temperature TSTG -55 to +150
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability
of the device.
VDD−VSS
VIL VSS -0.3 V
VOL VSS -0.3 V
VOH VDD +0.3 V
-0.3 to +7.0 V
°C
°C
DC CHARACTERISTICS
(VDD−VSS = 2.5V, FOSC. = 3.579545 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, Unloaded - 0.4 0.6 mA
Pulse, Unloaded - 0.2 0.4
Standby Current ISB
Memory Retention Current IMR
DTMF Output Voltage VTO
Pre-emphasis - Col/Row,
DTMF Distortion THD
DTMF Output DC Level VTDC
DTMF Output Sink Current ITL VTO = 0.5V 0.2 - - mA
Output Sink Current
IPL VPO = 0.5V 0.5 - - mA
= VSS, No load &
No key entry
= VDD, VDD =
1.0V
Row group, RL = 5 KΩ
VDD = 2.0 to 5.5V
RL = 5 KΩ,
VDD = 2.0 to 5.5V
RL = 5 KΩ,
VDD = 2.0 to 5.5V
- - 15
- - 0.2
130 150 170 mVrm
1 2 3 dB
- -30 -23 dB
1.0 - 3.0 V
µA
µA
s
Publication Release Date: May 1997
- 7 - Revision A2
Page 8
W91350N SERIES
MUTE
HKS
T/P
Output Sink
IML VMO = 0.5V 0.5 - - mA
Current
H/P Mute Output IHPH VHPH = 2.0V 0.5 - - mA
Drive/Sink Current IHPL VHPL = 0.5V 0.5 - - mA
DC Characteristics, continued
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
HFO Drive/Sink Current IHFH VHFH = 2.0V 0.5 - - mA
IHFL VHFL = 0.5V 0.5 - - mA
Keypad Input Drive Current IKD VI = 0.0V 30 - Keypad Input Sink Current IKS VI = 2.5V 200 400 -
I/P Pull-high Resistor
RHK - - 300 -
Keypad Resistance RK - - - 5.0
AC CHARACTERISTICS
(VDD−VSS = 2.5V, FOSC. = 3.579545 MHz, TA = 25° C, All outputs unloaded)
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
Key-in Debounce TKID - - 20 - mS
Key Release Debounce TKRD - - 20 - mS
On-hook Debounce TOHD - - 150 - mS
Pre-digit Pause
Pre-digit Pause
Interdigit Pause TIDP 10 ppS - 800 - mS
(Auto Dialing) 20 ppS - 500 Make/Break Ratio M/B Mode = VDD - 40:60 - %
Tone Output Duration TTD Auto dialing - 93 - mS
Intertone Pause TITP Auto dialing - 93 - mS
Flash Break Time TFB F2
1
TPDP1 Mode = VDD - 40 - mS
10 ppS Mode = Floating - 33.3 -
2
TPDP2 Mode = VDD - 20 - mS
20 ppS Mode = Floating - 16.7 -
Mode = Floating - 33.3:66.7 -
W91354AN Only - 87 -
W91354AN Only
F1
-
-
-
87 600 300 - mS
F3 73
F4
-
100 -
µA
µA
KΩ
KΩ
- 8 -
Page 9
W91350N SERIES
Flash Pause Time TFP F1, F2, F3, F4
Pause Time TP R/P
Notes:
1. Crystal parameters suggested for proper operation are Rs<100 ohms, 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.
-
-
1.0
3.6
-
-
S
S
Publication Release Date: May 1997
- 9 - Revision A2
Page 10
TIMING WAVEFORMS
HKS
KEY IN
DP
T/P MUTE
H/P MUTE
W91350N SERIES
T
3
T
KID
4
B
M
T
IDP
T
PDP
2
M
B
T
IDP
T
IDP
KRD
2
T
KID
T
IDP
T
PDP
HKS
KEY IN
T/P MUTE
H/P MUTE
DTMF
DTMF
OSC.
DP
Low
OSCILLATION
Figure 1(a). Normal Dialing Timing Diagram
T
R/P
BM
KRD
T
KID
M B
T
PDP
T
Low
IDP
T
IDP
T
< T
OSCILLATION
OHD
T
IDP
OSC.
OSCILLATION
Figure 1(b) Pulse Mode Auto Dialing Timing Diagram
- 10 -
Page 11
Timing Waveforms, continued
W91350N SERIES
HKS
KEY IN
T/P MUTE
H/P MUTE
DTMF
OSC.
HKS
KEY IN
DTMF
T/P MUTE
DP
T
R/P
BM
KRD
T
KID
M B
T
T
PDP
IDP
Low
OSCILLATION
Figure 1(c) Pulse Mode Auto Dialing Timing Diagram
43
T
KID
T
TD
2
T
ITP
T
ITP
T > T
5
OHD
T
KRD
T
ITP
H/P MUTE
OSC.
DP
Low
High
OSCILLATION
Figure 2(a) Tone Mode Normal Dialing Timing Diagram
Publication Release Date: May 1997
- 11 - Revision A2
OSCILLATION
Page 12
Timing Waveforms, continued
W91350N SERIES
HKS
KEY IN
DTMF
T/P MUTE
H/P MUTE
OSC.
HKS
KEY IN
DTMF
T/P MUTE
DP
T < T
T
KRD
OHD
R/P
T
KID
T
TD
T
ITP
Low
High
OSCILLATION
Figure 2(b) Tone Mode Auto Dialing Timing Diagram
R/P
T
KRD
T
KID
T
TD
T
ITP
T
> T
OHD
T
ITP
H/P MUTE
OSC.
DP
Low
High
OSCILLATION
Figure 2(c) Tone Mode Auto Dialing Timing Diagram
- 12 -
Page 13
Timing Waveforms, continued
HKS
W91350N SERIES
KEY IN
MODE
DP
DTMF
T/P
MUTE
H/P MUTE
HFI
HFO
OSC
1 2
H
H H
H
H
HKS
KEY IN
T/P MUTE
H/P MUTE
DTMF
OSC.
DP
Figure 3. Handfree Function Timing Diagram
2
R/P 3
T
KID
B
M
T
PDP
T
P
Low
OSCILLATION
Figure 4. Pause Function Timing Diagram
- 13 - Revision A2
T
M
IDP
B
T
PDP
Publication Release Date: May 1997
Page 14
Timing Waveforms, continued
HKS
KEY IN
DP
T/P MUTE
H/P MUTE
DTMF
2
T
KID
BM
T
PDP
*/T 3
T
IDP
W91350N SERIES
T
P
T
ITP
OSC.
OSCILLATION
Figure 5(a). Pulse-to-tone Timing Diagram (All Versions Except W91354AN)
HKS
KEY IN
DP
T/P MUTE
H/P MUTE
DTMF
OSC.
4
T
KID
BM
T
PDP
OSCILLATION
*/T
T
IDP
T
ITP
T
KRD
2
T
KID
T
ITP
OSCILLATION
Figure 5(b). Pulse-to-tone Timing Diagram (W91354AN Only)
- 14 -
Page 15
Timing Waveforms, continued
W91350N SERIES
HKS
KEY IN
DP
HFI
HFO
T/P MUTE
H/P MUTE
DTMF
OSC.
Low
F
T
KID
T
F
T
FB
KID
T
FP
F
T
FB
OSCILLATION
3
T
FP
T
KID
T
ITP
Figure 6. Flash Timing Diagram
Publication Release Date: May 1997
- 15 - Revision A2
Page 16
W91350N 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.
- 16 -
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
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