Winbond Electronics W91550DNH-1, W91550DNH, W91550DNF-1, W91550DNF Datasheet
W91550DN SERIES
13-MEMORY TONE/PULSE DIALER
WITH LCD AND LOCK FUNCTIONS
GENERAL DESCRIPTION
The W91550DN series are Si-gate CMOS IC tone/pulse switchable dialers containing 13 number
memories and a 10-digit LCD driver for displaying telephone numbers and calling time, including a
16-digit × 3 one-touch memory, 16-digit × 10 two-touch memory dialing, and 32-digit × 2 redial and
save memory. These dialers also provide a secrecy key, flash, two-way handfree dialing, one-key
redial, hold and lock functions.
FEATURES
• Tone/pulse switchable dialer
• Two by 32-digit redial and save memory (or mercury memory)
• Three by 16-digit one-touch direct repertory memory
• Ten by 16-digit two-touch indirect repertory memory
• Memory check function
• Save/mercury function selected by pin option
• Typical interdigit pause (IDP): 800 msec (10 ppS) in pulse mode
• Uses 4 × 7 keyboard
• Mute key for secrecy control
• Minimum tone output duration/inter-tone pause: 87/87 mS
• Flash pause time: 1.2 sec.
• Flash break time (98, 300, 600 msec) selectable by keypad
• Pause time (2.0, 3.6, 4.0 sec.) selectable by mask option
• Pulse-to-tone (*/T) keypad for long distance call operation
• 0 or 9 dialing inhibition pin for PABX system or long distance dialing lock out
• Make/break ratio selected by pin option
• Built-in 10-digit LCD driver for telephone number display and calling time (1/3 duty, 1/2 bias)
• Built-in calling time from (00:00) to (59:59)
• On-chip power-on reset and clear LCD
• On hook debounce: 250 msec in normal mode (20 msec in lock mode)
• First key-in delay: 300 msec in lock mode
• Uses 3.579545 MHz crystal or ceramic resonator
• Packaged in 64-pin QFP
• The different dialers in the W91550DN series are shown in the following table:
TYPE NO. FUNCTION PACKAGE
W91550DNF Default pause time is 3.6 sec. and all F1, F2, F3 are first priority. QFP
W91550DNF-1 Same as W91550DN except F3 can be stored as a digit. QFP
W91550DNH Default pause time is 3.6 sec. and all F1, F2, F3 are first priority. Chip
W91550DNH-1 Same as W91550DN except F3 can be stored as a digit. Chip
Publication Release Date: November 1998
- 1 - Revision A3
PIN CONFIGURATION
KMUTE
TEST
XT
MUTE
HKS
HFI
M42DP
LOCK
52
W91550DN SERIES
33
64
1
20
NO. NAME NO. NAME NO. NAME NO. NAME
1
17 5C 33 10C 49 C6
2 COM3 18 6A 34 VSS 50 R1
3 1A 19 6B 35 DTMF 51 R2
4 1B 20 6C 36 B/M 52 R3
5 1C 21 7A 37
53 R4
6 2A 22 7B 38 VDD 54 XT
7 2B 23 7C 39 HPM MUTE 55
8 2C 24 8A 40
T/P
56
9 3A 25 8B 41 ATS 57
10 3B 26
S/
58 HFO
11 3C 27 8C 43 MODE 59 VLCD
12 4A 28 9A 44 C1 60 CP
13 4B 29 9B 45 C2 61 CN
14 4C 30 9C 46 C3 62 COM1
15 5A 31 10A 47 C4 63 COM2
16 5B 32 10B 48 C5 64
- 2 -
PIN DESCRIPTION
XT
MUTE
MUTE
KMUTE
KMUTE
HKS
HKS
HKS
HKS
DP
SYMBOL PIN I/O FUNCTION
W91550DN SERIES
Column,
Row
Inputs
XT,
T/P
HPM MUTE 39 O The HPM MUTE is a conventional CMOS inverter output. During
MODE 43 I Pulling mode pin to VSS places the dialer in tone mode.
44−49
&
50−53
54, 55 I, O A built-in inverter provides oscillation with an inexpensive
40 O
1 O
I
The keyboard input may be used with either the standard 4 × 7
keyboard, an inexpensive single contact (form A) keyboard or
electronic input.
A valid key entry is defined by a single row being connected to a
single column.
3.579545MHz crystal. Most crystals do not vary by more than 0.02%.
The oscillator oscillates in off-hook or handfree mode but oscillation
ceases in on-hook mode or when the handfree mode is released.
The T/P
output. The output transistor is switched on during pulse and tone
mode dialing sequences and flash breaks. Otherwise, it is switched
off.
pulse dialing, flash break, hold, and mercury mute functions, this pin
will output an active high. Otherwise, it remains in a low state.
The
transistor is switched on only during the mute function. Otherwise, it is
switched off.
Pulling mode pin to VDD places the dialer in pulse mode.
Pulse or tone mode can be selected any time.
is a conventional CMOS N-channel open drain
is a CMOS N-channel open drain output. The output
56 I Hook switch input.
= VDD: On-hook state. Chip in sleeping mode, no operation.
= VSS: Off-hook state. Chip enable for normal operation.
pin is pulled to VDD by internal resistor.
42 O This pin is a CMOS inverter output. The timing diagram is shown as
Figure 1(a), 1(b), 1(c), 1(d). Flash key will cause DP to go active in
either pulse mode or tone mode.
Publication Release Date: November 1997
- 3 - Revision A3
W91550DN SERIES
M
Pin Description, continued
SYMBOL PIN I/O FUNCTION
DTMF 35 O In pulse mode, this pin remains in low state at all times.
In tone mode, it will output a dual or single tone. A detailed timing
diagram for tone mode is shown in Figure 2(a), 2(b), 2(c) 2(d).
Output Frequency
Specified Actual Error %
R1
R2
R3
R4
C1
C2
C3
697
770
852
941
1209
1336
1477
VDD, VSS 38, 34 I Power input pins.
B/M 36 I Make: Break ratio select pin.
If B/M = VDD, the M/B ratio is 40:60.
If B/M = VSS, the M/B ratio is 33.3:66.7.
B/M pin is pulled to VDD by internal resistor.
699
766
848
948
1216
1332
1472
+0.28
-0.52
-0.47
+0.74
+0.57
-0.30
-0.34
S/
26 I Save and mercury select pin.
If S/M = VDD, the save function is selected.
If S/M = VSS, the mercury function is selected.
S/M pin is pulled to VDD by internal resistor.
ATS 41 I If ATS = VDD, the auto timer function is enabled.
If ATS = VSS, the auto timer function is disabled.
ATS pin is pulled to VDD by internal resistor.
- 4 -
Pin Description, continued
HFI
HFI
HFI
LOCK
LOCK
LOCK
TEST
TEST
TEST
SYMBOL PIN I/O FUNCTION
W91550DN SERIES
, HFO
57, 58 I, O
64 I
Handfree control pins. A low pulse on the
input pin toggles the
handfree control state.
Status of the handfree control is listed in the following table:
CURRENT STATE
Hook SW.
−
On Hook High
Off Hook
On Hook
Off Hook
Off Hook High On Hook High
HFO
Low
High
Low
HFI
HFI
HFI
Off Hook
−
On Hook
Input
NEXT STATE
HFO
High
Low
Low Yes
Low
Low
Dialing
Yes
No
Yes
No
Yes
pin is pulled to VDD by internal resistor.
Detailed timing diagram is shown in Figure 4.
The
pin is used to prevent "0" or "9" dialing under PABX
system long distance call control. When the first key input after reset
is "0" or "9", all the key inputs, including "0" or "9" key, become
invalid, and the chip generates no output.
The telephone is reinitialized by a reset.
The following table describes the functions of the
pin:
37 I
LOCK PIN
Floating
VDD
V
SS
In normal operation, pulling the
tone. In testing operation, pulling the
FUNCTION
Normal dialing
"0", "9" dialing inhibited
"0" dialing inhibited
pin to VDD inhibits the single
pin to VSS enables a
single tone to be created by pressing two keys simultaneously, and all
of the timing parameters for pulse dialing are faster than in normal
operation.
VLCD 59 I Power supply pin for LCD driver.
A 1µF capacitor is connected between VLCD and VSS.
CP, CN 60, 61 I CP is the voltage control capacitor positive pin.
CN is the voltage control capacitor negative pin.
A 1 µF capacitor is connected between these two pins.
Publication Release Date: November 1997
- 5 - Revision A3
Pin Description, continued
SYMBOL PIN I/O FUNCTION
W91550DN SERIES
COM1−
62, 63, 2 O
COM3
1(A, B, C)−
10(A, B, C)
3−33
(unless
26-pin)
BLOCK DIAGRAM
ROW
(R1 ~ R4)
COLUMN
(C1 ~ C6)
O
KEYBOARD
INTERFACE
COM1−COM3 are common signal output terminals for the 1/3 duty
LCD.
1(A, B, C) −10(A, B, C) are 10-digit segment signal output terminals.
XT XT
HKS
B/M
MODE
LOCK
TEST
ATS
S/M
HFI
T/P MUTE
HPM MUTE
KMUTE
DP
HFO
LOCATION
LATCH
READ/WRITE
COUNTER
RAM
SYSTEM CLOCK
GENERATOR
CONTROL
LOGIC
PULSE
CONTROL
LOGIC
DTMF
D/A
CONVERTER
ROW & COLUMN
PROGRAMMABLE
COUNTER
BACKPLAN SIGNAL
GENERATOR
COM1 COM2
COM3
- 6 -
DATA LATCH
& DECODER
SEGMENT OUTPUT
DECODER
L.C.D.
FUNCTIONAL DESCRIPTION
M
HFI
¡õ
HFI
¡õ
HFI
¡õ
Keyboard Operation
C1 C2 C3 C4 C5 C6 Vss
1 2 3 E M1 TIM R1
4 5 6 CHK M2 F1 MUTE R2
7 8 9 A M3 F2 H R3
∗/T
• E: Store digit
• CHK: a. Check dialing number
b. Memory check (except mercury)
• A: Indirect repertory memory dialing function key
• R/P: Redial and pause function key
• ∗/T: ∗ in tone mode and P→T in pulse mode
• M1 to M3: One touch memory
0 # R/P
∗SAVE
W91550DN SERIES
F3 R R4
• *SAVE: Save function key, If the S/
pin = VDD
MER, Mercury code dialing, If the S/M pin = VSS
• TIM: Timer display key
• F1, F2, F3: Flash keys
• MUTE: Secrecy control key
• H: Hold function key
• R: One-key redial function
Notes:
D1, ..., Dn, D1', ..., Dn': 0, ..., 9, ∗/T, #
Mn: Direct memory location M1, M2, M3
Lm, Ln, Lp: Indirect memory location 0, ..., 9
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 in normal dialing.
3. The dialing mark (the dot of digit_1) will be lit until dialing is finished.
), D1 , D2 , ..., Dn
Redialing
1. OFF HOOK (or ON HOOK &
), D1 , D2 , ..., Dn Busy
Come ON HOOK , OFF HOOK (or ON HOOK &
- 7 - Revision A3
), R/P
Publication Release Date: November 1997
W91550DN SERIES
HFI
¡õ
DP
HFI
¡õ
HFI
¡õ
HFI
¡õ
HFI
¡õ
a. The R/P key can execute the redial function only as the first key-in after off-hook; otherwise,
it will invoke the pause function.
b. The redial memory content will be D1, D2, D3, ..., Dn.
c. If redialing length oversteps 32 digits, the redialing function will be inhibited.
2. OFF HOOK (or ON HOOK &
a. The one key redialing function timing diagram is shown in Figure 3.
b. If the dialing of D1 to Dn is finished, pressing the R key will cause the pulse output pin
to go low for 2.2 seconds break time and 0.6 seconds pause time will be added
automatically.
c. If the pulses of the dialed digits D1 to Dn have not finished, R will be ignored.
), D1 , D2 , ..., Dn , Busy, R
Number Store
1. OFF HOOK , (or ON HOOK
same as one time), Mn (or A , Ln , or Ln ), ON HOOK
D1, D2, ..., Dn will be stored in memory location Mn (or Ln) and will be dialed out.
2. OFF HOOK , (or ON HOOK
(could be skipped), Mn , ON HOOK
OFF HOOK (or ON HOOK
A (could be skipped), Ln , ON HOOK
a. D1, D2, ..., Dn will be stored in memory location Mn (or Ln) but will not be dialed out.
&
&
&
), D1 , D2 , ..., Dn , E (many times
), E , D1 , D2 , ..., Dn , E
), E , D1 , D2 , ..., Dn , E
b. R/P and */T keys can be stored as a digit in memory, but R/P key cannot be the first
digit. In store mode, R/P is the pause function key.
c. The store mode is released after the store function is executed or when the state of the hook
switch changes or the flash function is executed.
3. OFF HOOK ,
The redial content will be copied to memory location Mn (or Ln).
E , Mn
, (or A , Ln , or Ln )
Save
If the S/M pin = VDD, the save function is selected:
1. OFF HOOK , (or ON HOOK
E , D1' , D2' , ..., Dn' , SAVE
&
), D1 , D2 , ..., Dn , CONVERSATION,
- 8 -
W91550DN SERIES
HFI
¡õ
HFI
¡õ
HFI
¡õ
HFI
¡õ
HFI
¡õ
HFI
¡õ
HFI
¡õ
HFI
¡õ
D1', D2', ..., Dn' will be stored in save memory but will not be dialed out.
2. OFF HOOK , (or ON HOOK
a. D1, D2, ..., Dn will be dialed out before the SAVE key is pressed.
b. The D1, D2, ..., Dn will be copied to save memory when the SAVE key is pressed after
D1, D2, ..., Dn dialing is finished.
3. OFF HOOK , (or ON HOOK
a. D1, D2, ..., Dn will be dialed out when the SAVE key is pressed.
b. All of the sequences will be displayed on the LCD.
&
&
), D1 , D2 , ..., Dn , SAVE
), SAVE
Mercury
If the S/M pin = VSS, the mercury function is selected:
1. OFF HOOK , (or ON HOOK
E , D1' , D2' , ..., Dn' , MER
D1', D2', ..., Dn' will be stored in mercury memory but will not be dialed out.
2. MERCURY memory content = D1', D2', ..., Dn'
a. OFF HOOK , (or ON HOOK
D1, D2, ..., Dn will be dialed out but the MER's contents can't be dialed out.
&
&
), D1 , D2 , ..., Dn , CONVERSATION,
), D1 , D2 , ..., Dn , MER
b. OFF HOOK , (or ON HOOK
D1', D2', ..., Dn' will be dialed out, and the mercury mark (the dot of digit_10) will be blinking during
mercury dialing. Detailed timing diagram is shown in Figure 5.
c. The MER key can be used to execute the mercury function only when it is the first key-in in
dialing mode after off-hook state or first priority flash operation (except W91550DN-1's F3).
d. With the exception of the mercury mark, the contents of mercury memory will not be displayed
on the LCD.
e. Mercury memory cannot be checked in memory check mode.
&
), MER
Repertory Dialing
1. One-touch direct repertory dialing.
a. OFF HOOK , (or ON HOOK
b. OFF HOOK , (or ON HOOK
2. Two-touch indirect repertory dialing.
OFF HOOK , (or ON HOOK
&
&
&
), Mn
), SAVE (or MER )
), A , Ln
Publication Release Date: November 1997
- 9 - Revision A3
Access Pause
HFI
¡õ
HFI
¡õ
HFI
¡õ
HFI
¡õ
W91550DN SERIES
OFF HOOK (or ON HOOK &
1. The pause function can be stored in memory.
2. The pause function is executed in normal dialing, redialing, or memory dialing.
3. The pause function timing diagram is shown in Figure 6.
), 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)
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 7.
), D1 , D2 , ..., Dn , */T , D1' ,
TIM
OFF HOOK , (or ON HOOK
or Repertory dialing ), CONVERSATION, TIM
1. If no key is pressed after dialing and ATS pin = 1, the LCD will automatically display counting time
after 6 seconds.
2. The timer will count after the TIM key is pressed from 00:00.
&
), D1 , D2 , ..., Dn (or Redialing
Flash (F = F1, F2, F3)
OFF HOOK , (or ON HOOK
1. The dialer will execute flash break times of 600 mS (F1), 300 mS (F2), or 98 mS (F3) and a pause
time of 1.2 sec. before the next digit is dialed out.
2. The flash key cannot be stored as a digit in memory and it has the first priority among keyboard
functions (except for the F3 key of W91550DN-1).
3. The system will return to the initial state after pause time is finished.
4. Keyboard functions are inhibited during flash and when flash break is being executed.
5. The flash timing diagram is shown in Figure 8 and 12.
&
), F
- 10 -
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