Winbond W91570DN Series User manual

W91570DN SERIES
23-MEMORY TONE/PULSE DIALER WITH
AUTOREDIAL RTC AND LCD DISPLAY FUNCTIONS
Publication Release Date: May 1997
- 1- Revision A2
GENERAL DESCRIPTION
The W91570DN series ICs are Si-gate CMOS ICs that provide the signals needed for either pulse or
tone dialing. They feature 23 number memories and a 16-digit LCD driver for displaying telephone
numbers and calling time. A real time clock is included to display the time of day. The W91570DN
series is fabricated using CMOS technology providing good performance in low voltage, low power
applications.
FEATURES
•Three by 32 digits for redial, save and mercury memory
•Twenty by 16 digits for one-touch direct or two-touch indirect repertory memory
•Uses 6 ×10 keyboard
•Pause, Pulse-to-tone (*/T) and flash can be stored as a digit in memory
•Minimum tone output duration: 87 mS
•Minimum intertone pause: 87 mS
•Tone/Pulse mode pin selectable
•Make/Break ratio pin selectable
•Dialing rate (10 or 20 ppS) pin selectable
•Pause time (2.0 or 3.6 Sec) selectable by keypad
•Flash break time (100, 300, or 600 mS) selectable by keypad
•Built-in 12 or 16-digit LCD driver (1/4 duty, 1/3 bias) selectable by mask option
•Built-in calling timer from [00:00] to [59:59]
•Uses 3.579545 MHz TV quartz crystal or ceramic resonator
•Uses 32768 Hz crystal as RTC frequency base
•Packaged in 80-pin plastic QFP with RTC
•Provides one-key-redial and auto-redial functions
•Switchable 24-hour clock or 12-hour clock with p.m. mode
•0 or 9 dialing inhibition pin for PABX systems or long distance dialing lock out
•On-hook debounce: 150 msec in normal mode and 20 msec in lock mode
•Off-hook delay 300 mS in lock mode (i.e.
DP
will keep low for 300 mS while off hook)
•First key-in delay: 300 msec in lock mode
•MUTE key for speech mute
•Cascade and mixed dialing allowed
•The functions of the different dialers in the W91570DN series are shown in the following table:
PRODUCT NO. LCD DIGITS LOCK RTC BATTERY
W91572DNF 16 √1.5V
W91574DNF 16 √3V
W91576DNF 12 √1.5V
W91578DNF 12 √3V
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W91570DN SERIES
- 2-
PIN CONFIGURATION
1
25
41
65
80
PIN NAME QFP-80 PIN NAME QFP-80 PIN NAME QFP-80 PIN NAME QFP-80
SEG29 1COL2 21
TESTL
41 SEG9 61
SEG30 2COL3 22 APSET 42 SEG10 62
SEG31 3COL4 23 XT2 43 SEG11 63
SEG32 4COL5 24
XT2
44 SEG12 64
TEST 5COL6 25 VLCD 45 SEG13 65
KMUTE
6COL7 26 VRTC2 46 SEG14 66
KT 7COL8 27 CN 47 SEG15 67
TEST
1
8COL9 28 CP 48 SEG16 68
VDD 9ROW1 29 COM1 49 SEG17 69
NC/
LOCK
10 ROW2 30 COM2 50 SEG18 70
B/M 11 ROW3 31 COM3 51 SEG19 71
DTMF 12 ROW4 32 COM4 52 SEG20 72
SET
RTC 13 ROW5 33 SEG1 53 SEG21 73
VSS 14 XT1 34 SEG2 54 SEG22 74
H/P MUTE 15
XT1
35 SEG3 55 SEG23 75
T/P
MUTE
16
HKS
36 SEG4 56 SEG24 76
HFO 17
HFI
37 SEG5 57 SEG25 77
DP
/
C10
18 VRTC1 38 SEG6 58 SEG26 78
MODE 19
TEST
2
39 SEG7 59 SEG27 79
COL1 20 ARD 40 SEG8 60 SEG28 80
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W91570DN SERIES
Publication Release Date: May 1997
- 3- Revision A2
PIN DESCRIPTION
SYMBOL PIN NO. I/O FUNCTION
Row,
Column
Inputs
29−33
and
20−28
IThe keyboard inputs may be used with either the standard 6×10
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.
XT1,
XT
34, 35 I,
OA built-in inverter provides oscillation with an inexpensive
3.579545 MHz crystal or ceramic resonater.
The oscillator ceases when a keypad input is not sensed after
chip enable and dialing is finished. The crystal frequency
deviation is ±0.02%.
T/P
MUTE
16
O
The T/P
MUTE
is a conventional CMOS N-channel open drain
output.
The output transistor is switched on low level during the dialing
sequence (both pulse and tone mode), one-key redial break,
auto redial break and flash break. Otherwise, it is switched off.
H/P MUTE 15 OThe H/P MUTE is a conventional CMOS inverter output. During
pulse dialing, one-key redial break, auto redial break, flash
break, hold, and mercury functions, this pin will output an active
high. It remains in a low state at all other times.
KMUTE
6OThe
KMUTE
is a CMOS N-channel open drain output. The
output transistor is switched on only during mute function.
Otherwise, it is switched off.
HKS
36 IHook switch input.
HKS
= VDD or floating: On-hook state. Chip in sleeping mode,
no operation.
HKS
= VSS: Off-hook state. Chip enable for normal operation.
HKS
pin is pulled to VDD by internal resistor.
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W91570DN SERIES
- 4-
Pin Description, continued
SYMBOL PIN NO. I/O FUNCTION
HFI
, HFO 37, 17 I,
OHandfree control pins. A low pulse on the
HFI
input pin toggles
the handfree control state.
Status of the handfree control is listed in the following table:
CURRENT STATE
Input HFO Dialing
High Yes
On Hook High Low No
Off Hook High Low Yes
On Hook Off Hook Low Yes
Off Hook Low On Hook Low No
Off Hook High On Hook High Yes
Low
Hook SW. HFO
NEXT STATE
HFI
HFI
HFI
The
HFI
pin is pulled to VDD by internal resistor.
Detailed timing diagrams are shown in Figure 4(a), 4(b).
DP
/
C10
18 OThis pin is a CMOS N-channel open drain output. The flash key
will cause
DP
/
C10
to go active in either pulse mode or tone
mode. In lock mode, the
DP
/
C10
keeps low for 300 mS during
off-hook delay time (If first off-hook occured after power-on
reset, the
DP
/
C10
will keep high for 100ms then go low 200
mS. It will be recovered when first key-in was accepted). The
timing diagram is shown as Figure 1(a), 1(b), 1(c), 1(d).
DTMF 12 OIn 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), 2(b), 2(c), 2(d).
Specified Actual Error %
OUTPUT FREQUENCY
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
MODE 19 IPulling the mode pin to VSS places the dialer in tone mode.
Pulling the mode pin to VDD places the dialer in pulse mode
and the dialing rate is 10 ppS.
Floating the mode pin places the dialer in pulse mode and the
dialing rate is 20 ppS.
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W91570DN SERIES
Publication Release Date: May 1997
- 5- Revision A2
Pin Description, continued
SYMBOL PIN NO. I/O FUNCTION
B/M 11 IMake: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.
The B/M pin is pulled to VDD by internal resistor.
LOCK
10
(for all lock
version)
IThe
LOCK
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
LOCK
pin:
LOCK PIN
Floating
VDD
SS
V
FUNCTION
Normal dialing
"0", "9" dialing inhibited
"0" dialing inhibited
COM1 to
COM4 49 to 52 OCOM1 to COM4 are the common signal output terminal for the
1/4 duty LCD.
SEG1 to
SEG32 53 to 80,
1 to 4 OSEG1 to SEG32 are the 16-digit segment signal outputs.
VLCD 45 OPower supply pin for LCD driver.
A 0.1 µF capacitor is connected between VLCD and VSS.
CP, CN 48, 47 ICP is the voltage control capacitor positive pin.
CN is the voltage control capacitor negative pin.
A 0.1µF capacitor is connected between these two pins.
VDD, VSS 9, 14 IPower input pins.
XT2,
XT2
43, 44 I,
OA quartz crystal oscillator provides an RTC frequency time base
of 32.768 KHz.
VRTC1,
VRTC2 38, 46 IEither VRTC1 should be connected to a 1.5V battery
(W91572DN/576DN) or VRTC2 should be connected to a 3.0V
battery(W91574DN/578DN), which supplies the power source
for the RTC.
SET
RTC 13 IIn the chip enable state, pulling
SET
RTC
to VSS toggles the
RTC set function on/off, when the set function is toggled on, the
RTC can be set using the "HOUR" and "MIN" keypads.
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W91570DN SERIES
- 6-
Pin Description, continued
SYMBOL PIN NO. I/O FUNCTION
APSET 42 IIf APSET = VDD or floating, 24-hour clock mode.
If APSET = VSS, 12-hour clock with p.m. mode.
ARD 40 IAuto redial function selection.
ARD BREAK PAUSE WAIT INTERVAL REPEAT TIMES
V
V
Floating
DD 4 secs
30 secs
4 secs 1 sec
1 sec
1 sec
25 secs
30 secs
10
10
1
-
SS
When ARD is left floating, the one-key redial function is
enabled.
KT 7OThe key tone output is a conventional CMOS inverter.
The key tone is generated as any valid key pressed, as the KT
pin generates a 1.2 KHz square wave which keeps on 35 mS;
otherwise, it remain in low state.
TEST,
TEST
1
,
TEST
2
,
TESTL
5, 8, 39,
41 IFor testing only.
NC 10
(for
W91572/574/
W91576/578)
-No connection.
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W91570DN SERIES
Publication Release Date: May 1997
- 7- Revision A2
BLOCK DIAGRAM
ROW
COLUMN
DTMF
XT1 XT1
RAM
COUNTER
SYSTEM CLOCK
GENERATOR
LOCATION
LATCH
D/A ROW & COLUMN
PROGRAMMABLE
COUNTER
DATA LATCH
& DECODER
READ/WRITE
(R1 to R5)
(C1 to C9)
CONTROL
LOGIC
PULSE/
CONTROL
LOGIC
KEYBOARD
INTERFACE
CONVERTER
SEGMENT OUTPUT
DECODER
BACKPLANE SIGNAL
GENERATOR
COM2COM1 COM3 L.C.D.
COM4
XT2 XT2
REAL TIME CLOCK
GENERATOR
TONE
HKS
MODE
B/M
HFI
H/P MUTE
HFO
LOCK
DP/C10
KT
T/P MUTE
ARD
KMUTE
AP SET
SET RTC
VDD SSV
VRTC1
VRTC2
VLCD
CP CN
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1
C2
C3
C4
C5
C6
C7
C8
C9
DP /C10
1 2 3 EHOUR M0 M5 M10 M15 HOLD1 R1
4 5 6 MUTE MIN M1 M6 M11 M16 HOLD2 R2
7 8 9 A2 SAVE M2 M7 M12 M17 MER R3
*/T 0 # R/P1 OKR M3 M8 M13 M18 A1 R4
F1 F2 F3 CHK TIM M4 M9 M14 M19 RTC R5
R/P2 -ICON12 ICON13 ICON14 ICON15 ICON16 VDD/VX/R6
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W91570DN SERIES
- 8-
•E: Store digit
•MUTE: Mute key
•F1, F2, F3: Flash keys
•SAVE: Save memory key
•MER: Mercury memory key
•OKR: One-key redial function
•RTC: Real time clock toggle key
•HOLD1, HOLD2: Hold function keys
•R/P1, R/P2: Redial and pause function keys, P1 is 3.6 sec. and P2 is 2.0 sec.
•TIM: a. Display last calling time
b. Start and/or stop counting up calling time
•HOUR and MIN: Active when setting mode is operated after off-hook
•A1, A2: Indirect repertory memory dialing function keys, A1 for page 1 and A2 for page 2
If Lp = 0 to 9, Mp = M0 to M9, and Mq = M10 to M19, then
a. A1 + Lp (or Mp) the memory location M0 to M9 will be selected
b. A2 + Lp (or Mp) the memory location M10 to M19 will be selected
c. A1 (or A2) + Mq the memory location M10 to M19 will be selected
•*/T: * in tone mode and P→T in pulse mode
•CHK: a. Check dialing number
b. Check last dialing time
c. Memory check (except mercury)
•ICON12, ..., ICON16: Keys reserved for user, can be toggled on any time when the chip is enabled
Notes: D1, ..., Dn, D1', ..., Dn': 0, ..., 9, ∗/T, #
R/P: R/P1 or R/P2
An: A1, A2
Ln: 0, ..., 9, map to indirect memory location 0, ..., 9
Mn: Direct memory location M0, ..., M19
Normal Dialing
OFF HOOK (or ON HOOK &
HFI
¡õ
), D1 ,D2 , ..., Dn
1. D1, D2, ..., Dn will be dialed out.
2. Dialing length is unlimited, but redial is inhibited if the length oversteps 32 digits in normal dialing.
Redialing
If ARD pin = floating, the one-key redial function is selected:
1. OFF HOOK (or ON HOOK &
HFI
¡õ
), D1 ,D2 ,Check Memory (or
Number Store ), D3 , ..., Dn , Busy, ON HOOK ,OFF (or
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W91570DN SERIES
Publication Release Date: May 1997
- 9- Revision A2
Come HOOK
ON HOOK &
HFI
¡õ
), R/P
a.
The R/P key can execute the redial function only as the first dialing after off-hook; otherwise,
it
will invoke the pause
function.
b. The redial memory contents will be D3, ..., Dn.
c. Redial memory can be checked in memory check mode.
d. If redialing length oversteps 32 digits, the redialing function will be inhibited.
2. OFF HOOK (or ON HOOK &
HFI
¡õ
), D1 ,D2 , ..., Dn , Busy, OKR
a. If the dialing
of D1 to Dn is finished, pressing the OKR key will cause the pulse output
pin
DP
/
C10
to go low for 2.2 seconds break time and 0.6 seconds pause time will be added
automatically.
b. If the pulses of the dialed digits D1 to Dn have not finished, OKR will be ignored.
c. The one-key redialing function timing diagram is shown in Figure 3.
Number Entry
1. OFF HOOK (or ON HOOK &
HFI
¡õ
), D1 ,D2 ,
..., Dn ,E(many
times
same as one time), Mn (or An ,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 &
HFI
¡õ
), E,D1 ,D2 , ..., Dn ,E
(could be skipped), Mn (or An ,Ln ), ON HOOK
3. OFF HOOK (or ON HOOK &
HFI
¡õ
), E,D1 ,D2 , ..., Dn ,Mn
(or An ,Ln ), ON HOOK
a. D1, D2, ..., Dn will be stored in memory location Mn (or Ln) but will not be dialed out.
b. R/P and */T keys can be stored as a digit in memory, 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
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W91570DN SERIES
- 10 -
switch changes is executed.
4. OFF HOOK ,E,Mn (or An ,Ln )
The redial content excluding memory dialing will be copied to memory location Mn (or Ln).
5. The first 16 digits will be stored into memory, if the key-in number over 16 digits.
Save
1. OFF
HOOK (or ON HOOK &
HFI
¡õ
), D1 ,D2 , ..., Dn ,
CONVERSATION,
E,D1' ,D2' , ..., Dn' ,SAVE
D1', D2', ..., Dn' will be stored in save memory but will not be dialed out.
2. OFF
HOOK (or ON HOOK &
HFI
¡õ
), D1 ,D2 , ..., Dn ,SAVE
a. If the dialing sequence D1, D2, ..., Dn has not finished, SAVE will be ignored.
b. If the sequence off hook, D1, D2, ..., Dn (dialing finish), SAVE, SAVE is keyed in, D1, D2, ...,
Dn
will be copied to save memory and D1, D2, ..., Dn will be dialed out again.
c. If the sequence off hook, D1, D2 (dialing finish), SAVE, D3, D4 (dialing finish), SAVE is keyed
in,
D1, D2 will be copied to save memory and D3, D4 will not be copied to save memory.
d. All above sequences will be displayed on LCD.
Mercury
1. OFF
HOOK (or ON HOOK &
HFI
¡õ
), D1 ,D2 , ..., Dn ,
CONVERSATION,
E,D1' ,D2' , ..., Dn' ,MER
D1', D2', ..., Dn' will be stored in mercury memory and display on the LCD, but will not be dialed
out.
2. MERCURY memory content = D1', D2', ..., Dn'
OFF HOOK (or ON HOOK &
HFI
¡õ
), D1 ,D2 ,
..., Dn ,MER ,
ON HOOK ,
Come, OFF
HOOK (or ON HOOK &
HFI
¡õ
), MER
a. The dialing sequence will be D1, D2, ... Dn, on hook, off hook, D1', D2', ..., Dn'.
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W91570DN SERIES
Publication Release Date: May 1997
- 11 - Revision A2
b. 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 or first priority flash operation.
c. The contents of mercury memory will not be displayed on the LCD except for mercury mark.
d. If the sequence D1, D2, ..., Dn, MER, on-hook, off-hook, MER is keyed in, D1, D2, ..., Dn will not
be copied to mercury memory, D1', D2', ..., Dn' will be dialed out, and the mercury mark (icon 10)
will be blinking after off-hook. Detailed timing diagram is shown in Figure 5.
e. Mercury memory cannot be checked in memory check mode.
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W91570DN SERIES
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Repertory Dialing
1. One-touch direct repertory dialing.
a. OFF HOOK (or ON HOOK &
HFI
¡õ
), Mn (or R/P )
b. OFF HOOK (or ON HOOK &
HFI
¡õ
), SAVE (or MER )
c. OFF HOOK (or ON HOOK &
HFI
¡õ
), Mn (or R/P ), SAVE
2. Two-touch indirect repertory dialing.
OFF HOOK (or ON HOOK &
HFI
¡õ
), An ,Ln (or Mn )
Access Pause
OFF HOOK (or ON HOOK &
HFI
¡õ
), D1 ,D2 ,R/P ,D3 , ..., Dn
, Busy, Come, ON HOOK ,OFF
HOOK (or ON HOOK &
HFI
¡õ
), R/P
1. The first R/P functions as a pause key and the second as a first key-in redial key.
2. The pause function can be stored in memory, and only one R/P key can be released to the user.
3. The pause function is executed in normal dialing, redialing, or memory dialing.
4. The pause duration of 2.0 or 3.6 seconds per pause is selected through the keypad.
5. The default pause duration is 3.6 seconds after power on.
6. The pause function timing diagram is shown in Figure 6.
Pulse- to-tone (*/T)
OFF HOOK (or ON HOOK &
HFI
¡õ
), D1 ,D2 , ..., Dn ,*/T ,D1' ,
D2' , ..., Dn'
1. If the mode switch is set to pulse mode, then the output signal will be:
D1, D2, ... Dn, Pause (2.0 sec/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 after the digits have been dialed out and can be reset to pulse
mode only by going on-hook.
4. The pause time of pulse-to-tone is default to 3.6 seconds.
5. The pulse-to-tone function timing diagram is shown in Figure 7.
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W91570DN SERIES
Publication Release Date: May 1997
- 13 - Revision A2
Flash (F = F1, F2, F3)
OFF HOOK (or ON HOOK &
HFI
¡õ
), F
1. The dialer will execute a flash break time of 600 mS (F1), 300 mS (F2), or 100 mS (F3) and pause
time of 1S before the next digit (except flash key) is dialed out.
2. Flash keeps first priority in normal dialing but insert flash can be stored into memory when flash is
the first digit in memory. In this condition, only one flash key can be released to the user.
a. E, F1, D1, D2, D3, E, Mn then the digit stored in Mn will be F1, D1, D2, D3.
b. E, D1, F1, D2, D3, E, Mn then the digit stored in Mn will be D1, D2, D3.
c. F1, D1, D2, D3, E, Mn then the digit stored in Mn will be D1, D2, D3.
3. The system will return to the initial state after the flash pause time is finished.
4. Keyboard functions are inhibited when flash break is being executed.
5. The flash timing diagram is shown in Figure 8.
Mute
OFF HOOK (or ON HOOK &
HFI
¡õ
), MUTE
1. The MUTE is switched on and off by a toggle switch.
2. The function timing diagram is shown in Figure 9.
Hold Key
OFF HOOK (or ON HOOK &
HFI
¡õ
), HOLD1 (or HOLD2 )
1. The hold function is toggled on and off by Hold1 or Hold2 key. When the hold function is toggled
on, the hold mark (icon 4) will be lit and all key-ins (except hold keys and icon keys) will be
ignored.
2. The following are examples of hold function toggled on and off:
a. OFF HOOK ,HOLD1 (or HOLD2 ), HOLD1 (or HOLD2 )
b. OFF HOOK ,HOLD1 (or HOLD2 ),
HFI
¡õ
c. OFF HOOK ,HOLD1 (or HOLD2 ), ON HOOK ,
HFI
¡õ
d. ON HOOK &
HFI
¡õ
,HOLD1 (or HOLD2 ),
HFI
¡õ
3. Hold1 and Hold2 have the same function in off-hook state. The difference between Hold1 and
Hold2 are shown as follows:
a. If OFF HOOK ,HOLD1 (or HOLD2 ), ON HOOK ,HOLD1 is entered, then the
dialer will be off-line.
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W91570DN SERIES
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If OFF HOOK ,HOLD1 (or HOLD2 ), ON HOOK ,HOLD2 is entered, then
the dialer stay at hold function.
b. If ON HOOK &
HFI
¡õ
,HOLD1 (or HOLD2 ), HOLD1 is entered, then
the dialer will be off-line.
If ON HOOK &
HFI
¡õ
,HOLD1 , (or HOLD2 ), HOLD2 is entered, then
the dialer stay at hold function.
4. The function timing diagram is shown in Figure 10(a), 10(b), 10(c).
Adjusting Time Setting
OFF HOOK (or ON HOOK &
HFI
¡õ
),
SET
RTC
¡õ
,HOUR ,MIN ,
SET
RTC
¡õ
(or ON HOOK )
1. Only HOUR and MIN keys are valid in set RTC mode.
2. Hours and minutes count forward as long as the HOUR or MIN key is pressed.
3. The on/off function of
SET
RTC is toggled, and the dialer will go back to a previous state after the
toggle off
SET
RTC function.
4. If the dialing sequence D1, D2, ..., Dn (including flash and pause) has not finished,
SET
RTC (or
'RTC' key pressed) will be ignored.
RTC Display Mode
OFF HOOK (or ON HOOK &
HFI
¡õ
), RTC
1.The real time clock display mode can be toggled on and off by RTC key.
2. The icon display will not be changed when enter RTC display mode and set RTC mode.
Check Key
OFF HOOK (or ON HOOK &
HFI
¡õ
), CHK ,R/P (or OKR ,SAVE ,Mn
, ..., etc.)
The redial (or memory) content will be displayed on the LCD when either R/P or OKR
is keyed in.
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W91570DN SERIES
Publication Release Date: May 1997
- 15 - Revision A2
Auto Redial
If ARD pin = VDD or VSS, the auto redial function is selected:
OFF HOOK (or ON HOOK &
HFI
¡õ
), OKR
waiting interval
Time Zone (C)
Auto dialing
Time Zone (A)
Pause
Break
Time Time Pause
Break
Time Zone (A)
waiting interval
Auto dialing
Time Zone (B)
Time Time
repeat till
n-1 times.
Time Zone (B)
1. During time zone (B) the keypads are inhibited, and in time zone (A), (C) the auto redial can be
interrupted by pressing any keypad or by going off-hook.
2. The visible dialing number will be blinking during the waiting time interval.
3. If OKR is the first key-in after off-hook or handfree then the first break and pause time will be
ignored.
4. The following show examples to interrupt auto redial function:
OFF HOOK (or ON HOOK &
HFI
¡õ
), OKR ,Any Keypad (at break time and
waiting interval)
5. If ON HOOK &
HFI
¡õ
,OKR ,OFF HOOK
a. When in time zome (A) or (C), the auto-redial function will be interrupted and changed to hook
mode after OFF HOOK
b. When in time zome (B), the auto-redial functiion will continue and changed to hook mode after
OFF HOOK
6. If ON HOOK &
HFI
¡õ
,OKR ,
HFI
¡õ
(any time) is entered, the dialer will be off-line.
7. The auto redial function timing diagram is shown in Figure 11(a), 11(b).
8. The calling time will auto-count when the auto-redial function is interrupted in break time zone (A)
and (C).
TIM
OFF HOOK (or ON HOOK &
HFI
¡õ
), D1 ,D2 , ..., Dn (or Redialing or
Repertory dialing 1 ), CONVERSATION
1. If no key is pressed after dialing is finished, the LCD will display counting time after 6 seconds.
2. If the dialing sequence D1, D2, ..., Dn has not finished, TIM will be ignored.
3. The timer will be initialized by flash and auto redial.
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W91570DN SERIES
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Cascaded and Mixed Dialing
Cascaded Dialing
1. Definition of cascaded dialing:
In cascaded dialing, a new sequence may be pressed before the previous sequence has been sent
out completely. The following are examples of cascaded dialing:
Example 1: Normal dialing +Repertory dialing 1 +Repertory dialing 2 +...
Example 2: Repertory dialing 1 +Normal dialing +Repertory dialing 2 +...
Example 3: Redialing +Normal dialing +Repertory dialing 1 +...
2. Normal dialing, redialing, or repertory dialing as represented by each rectangle above is treated as
one sequence.
3. At most 64 digits are allowed in cascaded dialing, but there is no limitation on the number of
sequences.
4. The content of cascaded dialing may a combination of normal dialing, redialing, and repertory
dialing. Redialing is vaild only as the first key-in, however.
5. If ON HOOK ,OFF HOOK ,OKR is entered, then the cascaded dialing sequence
described in the above examples will be dialed out only if there are not more than 32 digits. If the
sequence exceeds 32 digits then the redialing is inhibited.
Mixed Dialing
1. Definition of mixed dialing:
The examples of cascaded dialing given above are also examples of mixed dialing except that in
mixed dialing a new sequence may be accepted only when the previous sequence has been dialed
out completely.
2. There is no limitation on the number of digits and sequences in the mixed dialing.
3. The content of mixed dialing may be a combination of normal dialing, memory dialing, or one-key
redialing.
4. If ON HOOK ,OFF HOOK ,OKR is entered, then the mixed dialing sequence
described in the above examples will be dialed out only if the total number of digits does not
exceed 32. If the total exceeds 32 digits, then redialing is inhibited.
Combining of Cascaded and Mixed Dialing
1. Cascaded dialing and mixed dialing may be combined, and each follows the rules described
above.
2. To apply redialing to combinations of cascaded and mixed dialing:
ON HOOK ,OFF HOOK ,OKR then redialing will be executed only if the total number of
digits does not exceed 32. Otherwise, the redialing is inhibited.
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W91570DN SERIES
Publication Release Date: May 1997
- 17 - Revision A2
3. If there had been n cascaded sequences with a total of 60 digits dialed, then for the (n+1)th
cascaded sequence, one 4-digit normal dialing sequence or one complete repertory dialing
sequence (length up to 32 digits) can be dialed. The (n+2)th sequence will not be accepted for
cascaded dialing.
4. After a total of 64 digits of cascaded dialing have been completed, mixed dialing can be added.
ABSOLUTION MAXIMUM RATINGS
PARAMETER SYMBOL RATING UNIT
DC Supply Voltage VDD−VSS -0.3 to +7.0 V
VIL VSS −0.3
Input/Output Voltage VIH VDD + 0.3
V
VOL VSS −0.3
VOH VDD + 0.3
Power Dissipation PD120 mW
Operating Temperature TOPR -0.5 to +70 °C
Storage Temperature TSTG -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.
ELECTRICAL CHARACTERISTICS
DC CHARACTERISTICS
(VDD−VSS = 2.5V. FOSC = 3.58 MHz, TA= 25°C, all outputs unloaded.)
PARAMETER SYM. CONDITIONS MIN. TYP. MAX. UNIT
Operating Voltage VDD
-2.0 -5.5 V
Operating Current IOP Tone, Unloaded -0.5 0.7
mA
Pulse, Unloaded -0.4 0.5
Standby Current ISB
HKS
= 0, Unloaded
and no key entry - - 15 µA
Memory Retention Current IMR
HKS
= 1
VDD = 1.0V - - 0.5 µA
Tone Output Voltage VTO Row group
RL= 10 KΩ130 150 170 mVrm
s
Pre-emphasis Col/Row
VDD = 2.0 to 5.5V -2 3 dB
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W91570DN SERIES
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DC Characteristics, continued
PARAMETER SYM. CONDITIONS MIN. TYP. MAX. UNIT
DTMF Distortion THD RL= 10 KΩ
VDD = 2.0 to 5.5V --30 -23 dB
DTMF Output DC Level VTDC VDD = 2.0 to 5.5V 1.0 -3.0 V
DTMF Output Sink Current ITL VTO = 0.5V 0.2 - - mA
DP
Output Sink Current IPL VPO = 0.5V 0.5 - - mA
Common Output Voltage VCH
-4.2 4.5 4.8 V
VCL - - 00.3
Common Output Current ICH --20 - - µA
ICL -20 - -
Segment Output Voltage VSH -4.2 4.5 4.8 V
VSL -00.3
Segment Output Current ISH --5 - - µA
ISL -5- -
RMS Voltage Across a VON -2.34 2.6 -Vrms
Segment VOFF - - 1.5 1.65
Average DC Offset Voltage VDC - - - 100 mV
HFI
High Voltage VHFIH -0.8 VDD -VDD V
HFI
Low Voltage VHFIL - - - 0.2 VDD V
T/P
MUTE
Output Sink
Current ITML VTMO = 0.5V 0.5 - - mA
H/P MUTE Output Drive
Current IHMH VHMO = 2.5V 0.5 - - mA
H/P MUTE Output Sink
Current IHML VHMO = 0.5V 0.5 - - mA
K MUTE
Output Sink
Current IKML VTMO = 0.5V 0.5 - - mA
Keypad Input Drive Current IKD VI= 0V 4-80 µA
Keypad Input Sink Current IKS VI = 2.5V 200 -400 µA
Keypad Resistance RK- - - 5KΩ
Control Input Pull Up/Down
Resistor RCIP B/M,
HFI
100 - - KΩ
HKS
Input Pull High
Resistor RHK - - 500 2000 KΩ
AC CHARACTERISTICS
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W91570DN SERIES
Publication Release Date: May 1997
- 19 - Revision A2
(VDD−VSS = 2.5V, FOSC. = 3.58 MHz, TA= 25°C, all outputs unloaded.)
PARAMETER SYM. CONDITIONS MIN. TYP. MAX. UNIT
Key-in Debounce TKID - - 20 -mS
Key Release Debounce TKRD - - 20 -mS
Off Hook Delay Time TOFD - - 300 -mS
First Key-in Delay Time TFKD - - 300 -mS
On Hook Debounce Time TOHD Unlock -150 -
mS
Lock -20 -
Key Tone Frequency FKT - - 1.2 -KHz
Key Tone Duration TKTD - - 35 -mS
Key Tone Delay TKD - - 20 -mS
Pulse Mute Delay TMD B/M = VDD -40 -mS
B/M = VSS -33.3 -
Pre-digit-pause (1) TPDP1 B/M = VDD -40 -mS
10 ppS B/M = VSS -33.3 -
Pre-digit-pause (2) TPDP2 B/M = VDD -20 -mS
20 ppS B/M = VSS -16.7 -
Inter-digit Pause TIDP1 10 ppS -800 -mS
(Auto Dialing) TIDP2 20 ppS -500 -
Make/Break Ratio
M:B
B/M = VDD -40:60 -%
B/M = VSS -33:67 -
Tone Output Duration TTD - - 87 -mS
Inter-tone Pause TITP -87 -mS
F1 -600 -
Flash Break Time TFB F2 -300 -mS
F3 -100 -
Flash Pause Time TFP F1, F2, F3 -1-S
Pause Time TPR/P1 -3.6 -
S
R/P2 -2.0 -
One Key Redialing Break Time TRB - - 4-S
One Key Redialing Pause Time TRP - - 1-S
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W91570DN SERIES
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AC Characteristics, continued
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
Auto Redialing TARB ARD = VDD -4-
S
Break Time ARD = VSS -30 -
Auto Redialing TAPR ARD = VDD -1-
S
Pause Time ARD = VSS -1-
Auto Redialing TWI ARD = VDD -25 -
S
Waiting Interval ARD = VSS -30 -
LCD Frame Frequency FLCD - - 32 -Hz
RTC DC CHARACTERISTICS
(VRTC = 1.5V, VSS = 0V , FOSC. = 32,768 Hz, TA = 25°C, all outputs unloaded.)
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
Supply Voltage VRTC
-1.2 1.5 1.8 V
Supply Current IRTC
No Load -2.0 4.0 µA
OSC. Starting Time TOSC - - - 3S
OSC. Output Built-in Cap. CO
Cl = 12.5 pF -25 -pF
OSC. in Trimmer Cap. CTRIM
-5-35 pF
Frequency Stability ∆f/f VDD−VSS = 1.3
to 1.6V - - 1ppM
SET
RTC Input High Voltage VSETH -VDD -0.3 -VDD V
SET
RTC Input Low Voltage VSETL -VSS -VSS +0.3 V
Notes :
1. Crystal parameters suggested for proper operation are Rs < 100Ω, Lm = 96 mH , Cm = 0.02 pF , Cn = 5 pF , Cl = 18 pF, and
Fosc. = 3.579545 MHz ±0.02%
2. Crystal oscillator accuracy directly affects these times.
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