Winbond Electronics W91590L, W91590CL, W91590C, W91590BL, W91590B Datasheet
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W91590 SERIES
24-MEMORY TONE/PULSE SWITCHABLE DIALER
WITH HANDFREE, HOLD AND LOCK FUNCTIONS
GENERAL DESCRIPTION
The W91590 series dialers Si-gate CMOS IC tone/pulse switchable dialers with a 24-channel
automatic dialing memory, including a 16-digit × 3 emergency dialing memory, a 16-digit × 20
channel repertory memory that provides one-touch and three-touch dialing, and a 32-digit mercury
memory. These dialers also provide flash, clear, hold, and one-key redial functions.
FEATURES
• DTMF/Pulse switchable dialer
• 32-digit LNB (last number buffer) memory (both tone and pulse mode)
• 32-digit mercury memory (tone/pulse mode)
• 16-digit × 3 one-touch direct repertory memory (tone/pulse mode)
• 16-digit × 20 direct or indirect repertory memory (tone/pulse mode)
• Uses 9 × 5 keyboard
• Flash time: 98 mS, 305 mS, or 600 mS (selectable by keypad option)
• Pause time: 3.6 sec.
• Pause P→T (pulse-to-tone) can be stored as a digit in memory
• Minimum tone output duration: 93 mS
• Minimum intertone pause: 93 mS
• On-chip power-on reset
• Uses 3.579545 MHz crystal or ceramic resonator
• Packaged in 22, 24 or 28-pin plastic DIP
• The different dialers in the W91590 series are shown in the following table:
TYPE NO. PULSE
(ppS)
MEMORY MERCURY
MEMORY
HOLD HANDFREE LOCK
FUNCTION
PACKAGE
W91590 10 20 - - - - 22
W91590L 10 20 - - - Yes 22
W91590A 10 20 - - Yes - 24
W91590AL 10 20 - - Yes Yes 24
W91590B 10/20 24 Yes Yes Yes - 28
W91590BL 10/20 24 Yes Yes Yes Yes 28
W91590C 10/20 24 Save Memory Yes Yes - 28
W91590CL 10/20 24 Save Memory Yes Yes Yes 28
Publication Release Date: July 1995
- 1 - Revision A3
PIN CONFIGURATIONS
W91590A
W91590AL
W91590L
W91590 SERIES
T/P MUTE
T/P MUTE
C2
C3
C4
C5
C6C76
V
SS
XT
XT
C2
C3
C4
C5
C6C76
V
SS
XT
XT
1
2
3
4
5 18
7
8
9 14
10
11 12
W91590
1
2
3
4
5 18
7
8
9 14
10
11 12
C1
1
2
C2
C3
1
R5
22C1
R4
21
20
R3
R2
19
R1
17
NC
V
16
DD
15
MODE
DTMF
13
DP/C9
HKS
T/P MUTE
C2
C3
C4
C5
C6C76
V
SS
XT
XT
HFI
2
3
4
5 20
7
8
9 16
10
11
12
R5
24C1
R4
23
22
R3
R2
21
R1
19
NC
V
18
DD
17
MODE
DTMF
15
DP/C9
14
HKS
13
HFO
T/P MUTE
3
4
C4
5 24
C5
C6C76
7
C8
8
KT
9 20
V
SS
10
11
XT
12 17
XT
13
14 1516HFO
HFI
R5
28
R4
27
R3
26
R2
25
R1
HPM MUTE
23
NC
22
DRS
21
V
DD
MODE
19
DTMF
18
DP/C9
HKS
W91590B/C
1
2
C2
3
T/P MUTE
C3
4
C4
5 24
C5
C6
C767
8
C8
KT
9 20
V
SS
10
11
XT
12 17
XT
13
14 1516HFO
HFI
1
R5
22C1
R4
21
R3
20
R2
19
R1
17
LOCK
V
DD
16
15
MODE
DTMF
13
DP/C9
HKS
T/P MUTE
C2
C3
C4
C5
C6C76
V
SS
XT
XT
HFI
2
3
4
5 20
7
8
9 16
10
11
12
R5
24C1
R4
23
R3
22
R2
21
R1
19
LOCK
V
18
DD
17
MODE
DTMF
15
DP/C9
14
HKS
13
HFO
R5
28C1
R4
27
26
R3
R2
25
R1
HPM MUTE
23
22
LOCK
21
DRS
V
DD
MODE
19
DTMF
18
DP/C9
HKS
W91590BL/CL
- 2 -
W91590 SERIES
XT
MUTE
MUTE
HKS
HKS
HKS
HKS
DP/C9
PIN DESCRIPTION
SYMBOL 22-PIN 24-PIN 28-PIN I/O FUNCTION
Column-
Row
Inputs
XT,
T/P
HPM
MUTE
MODE 15 17 19 I Pulling mode pin to VSS places the dialer in
NC 17
1−7
&
18−22
9, 10 9, 10 11, 12 I, O A built-in inverter provides oscillation with an
11 11 13 O
- - 23 O The HPM MUTE is a conventional inverter
12 14 16 I Hook switch input.
13 15 17 O N-channel open drain dialing pulse output
(W91590)19(W91590A)22(W91590B/C)
1−7
&
20−24
1−8
&
24−28
I The keyboard input may be from either the
standard 9 × 5 keyboard or an inexpensive
single contact (form A) keyboard. Electronic
input from a µC can also be used.
A valid key entry is defined by a single row
being connected to a single column.
inexpensive 3.579545 MHz crystal or
ceramic resonator.
The T/P
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.
output. During pulse dialing, flash, hold, and
mercury mute functions, this pin will output
an active high. It remains in a low state at all
other times.
tone mode.
Pulling mode pin to VDD places the dialer in
pulse mode (M/B = 2:3).
Leaving mode pin floating places the dialer
in pulse mode (M/B = 1:2).
= 1: On-hook state. Chip in sleeping
mode, no operation.
= 0: Off-hook state. Chip enabled for
normal operation.
pin is pulled to VDD by internal resistor.
(Figure 1).
Flash key causes DP to go active when in
pulse mode and tone mode.
- No connection.
is a conventional CMOS
Publication Release Date: July 1995
- 3 - Revision A3
W91590 SERIES
LOCK
HFI
HFI
HFI
HFI
HFI
Pin Description, continued
SYMBOL 22-PIN 24-PIN 28-PIN I/O FUNCTION
17
(For
W91590L)
DTMF 14 16 18 O In pulse mode, remains in low state at all
19
(For
W91590AL)
22
(For
W91590BL/CL)
I The function of this pin is as follows:
LOCK PIN
V
DD
Floating
V
SS
FUNCTION
"0","9" dialing inhibited
Normal dialing
"0" dialing inhibited
times. In tone mode, outputs a dual or single
tone. Detailed timing diagram for tone mode
is shown in Figure 2.
OUTPUT FREQUENCY
Specified Actual Error%
C3
R1
R2
R3
R4
C1
C2
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 16, 8 18, 8 20, 10 I Power input pins.
, HFO
- 12, 13 14, 15 I, O Handfree control pins. A low pulse on the
input pin toggles the handfree control
state. Status of the handfree control state is
listed in the following table:
CURRENT STATE
Hook SW.
-
On Hook
Off Hook
On Hook
Off Hook
Off Hook
HFO
Low
High
High
-
Low
High
Input
HFI
Off Hook
On Hook
On Hook
NEXT STATE
HFO
High
Low
Low
Low
Low
High
pin is pulled to VDD by internal resistor.
The detailed timing is shown in Fig 3.
KT - - 9 O Key tone signal output. A key tone will be
generated whenever a valid keys is pressed.
Frequency is 600 Hz and duration is 35 mS.
Dialing
Yes
No
Yes
Yes
No
Yes
- 4 -
W91590 SERIES
Pin Description, continued
SYMBOL 22-PIN 24-PIN 28-PIN I/O FUNCTION
DRS - - 21 I Dial rate selection.
This pin is pulled to VDD by an internal
resistor.
MODE
BLOCK DIAGRAM
DRS
1
2
PIN
V
Floating
V
V
Floating
V
DD
SS
DD
SS
TONE/PULSE
Pulse
Pulse
Tone
Pulse
Pulse
Tone
DIAL
RATE
10 ppS
10 ppS
10 ppS
20 ppS
M/B
2:3
1:2
1:2
1:2
ROW
(R1 to R5)
COLUNM
(C1 to C8)
DTMF
KEYBOARD
INTERFACE
D/A CONVERTER
HKS
LOCK
MODE
READ/WRITE
COUNTER
RAM
LOCATION
LATCH
ROW & COLUMN
PROGRAMMABLE
COUNTER
XT
SYSTEM CLOCK
GENERATOR
HFI
CONTROL
XT
LOGIC
DRS
PULSE
CONTROL
LOGIC
DATA LATCH
& DECODER
KT
T/P MUTE
HPM MUTE
HFO
DP/C9
Publication Release Date: July 1995
- 5 - Revision A3
W91590 SERIES
C1C2C3C4C5C6C7
DP/C9
C8
C9
HFI
FUNCTIONAL DESCRIPTION
Keyboard Operation
1 2 3 S M00 M05 M10 M15 EM1 R1
4 5 6 MEMO M01 M06 M11 M16 EM2 R2
7 8 9 CLR M02 M07 M12 M17 EM3 R3
*/T 0 # R/P M03 M08 M13 M18 H R4
F1 F2 F3 R M04 M09 M14 M19 *MER R5
MER location in W91590C/CL is SAVE memory.
• S: Store function key
• F1, F2, F3: Flash keys
• R: One-key redial
• H: Hold function key
•
: This key is connected to pin DP/C9 via a bipolar switching transistor and a diode
• M0j: Direct or indirect (MEMO + M0j = M1j) repertory memory
• M1j: Direct repertory dialing
• EMi: One-touch memory for emergency call
• */T: * & P→T
• CLR: Clear key
• R/P: Redial and pause function key
• MER: One-touch memory for mercury code dialing
• MEMO: Indirect repertory dialing function key
Note: Dn = 0 to 9, *, #, Mij = M00 to M19 (i = 0, 1; j = 0 to 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.
), D1 , D2
, …,
Dn
- 6 -
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