Winbond Electronics W91611, W91610 Datasheet
W91610 SERIES
TONE/PULSE DIALER WITH
TWO-STAGE REDIAL FUNCTION
GENERAL DESCRIPTION
The W91610 series are Si-gate CMOS ICs that provide the signals needed for either pulse or tone
dialing.
FEATURES
• DTMF/Pulse switchable dialer
• 32-digit redial memory
• Two-stage redial function
• Pulse-to-tone (P→T) keypad for long distance call operation
• Easy operation with redial, flash, pause and P→T keypads
• Pause, pulse-to-tone (P→T) can be stored as a digit in memory
• Tone output duration: as long as key is depressed or 90 mS minimum
• Minimum intertone pause: 90 mS
• Flash time: 100 mS
• Uses 4 × 5 keyboard
• On-chip power-on reset
• Uses 3.579545 MHz crystal or ceramic resonator
• Packaged in 18-pin DIP
• The different dialers in the W91610 series are shown in the following table:
TYPE NO. DIALING RATE PAUSE B:M FLASH
W91610
10 ppS 4 sec
2:1
100 mS
W91611 3:2
Publication Release Date: July 1996
- 1 - Revision A3
PIN CONFIGURATION
XT
MUTE
MUTE
W91610 SERIES
1 18 R4C1
C2
C3
C4
P MUTE
V
XT
XT
T/P MUTE
SS
2
3
4
5
6
7
8
9 10
17
16
15
14
13
12 DTMF
11
R3
R2
R1
V
DD
MODE
DP/C5
HKS
PIN DESCRIPTION
SYMBOL PIN NO. I/O FUNCTION
Column-
Row Inputs
1−4
&
15−18
I
Keyboard inputs are designed for use with either a standard 4 × 5
keyboard or an inexpensive single contact (Form A) keyboard.
Electronic input from a µC can also be used.
Valid key entry is defined by a connection between a single row
and a single column.
XT,
7, 8 I, O A built-in inverter provides oscillation with an inexpensive
3.579545 MHz crystal or ceramic resonator.
T/P
9 O
The T/P
is a conventional CMOS inverter output. It is low
during pulse and tone mode dialing sequence and flash break;
otherwise, it remains high.
MODE 13 I Pulling the mode pin to VSS place the dialer in tone mode.
Pull to VDD or leave floating: Pulse mode (10 ppS, M/B = 2:3 or
1:2)
- 2 -
Pin Description, continued
HKS
HKS
HKS
HKS
DP/C5
SYMBOL PIN NO. I/O FUNCTION
10 I Hook switch input. Conventional CMOS input with an internal
protection diode and a pull-high resistor to VDD.
= VDD: On-hook state. Chip in sleep mode, no operation.
= VSS: Off-hook state. Chip enabled for normal operation.
W91610 SERIES
During dialing, this input ignores
= VDD for durations of less
than 150 mS (i.e., dialing is not terminated).
11 O Open drain dialing pulse output (Figure 1).
Flash key causes DP/C5 to be active in both tone mode and pulse
mode.
DTMF 12 O During pulse dialing, maintains 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.
P MUTE 5 O The P MUTE is a conventional CMOS inverter output. It is high
during pulse dialing sequence and flash break. Otherwise, it
remains low.
Publication Release Date: July 1996
- 3 - Revision A3
BLOCK DIAGRAM
DP/C5
W91610 SERIES
XT
XT
ROW
(R1 to R4)
KEYBOARD
INTERFACE
COLUMN
(C1 to C4)
DTMF
D/A
CONVERTER
FUNCTIONAL DESCRIPTION
Keyboard Operation
HKS
MODE
READ/WRITE
COUNTER
RAM
LOCATION
LATCH
ROW & COLUMN
PROGRAMMABLE
COUNTER
SYSTEM CLOCK
GENERATOR
CONTROL
LOGIC
PULSE
CONTROL
LOGIC
DATA LATCH
& DECODER
T/P MUTE
P MUTE
DP/C5
C1 C2 C3 C4
1 2 3
P→T
4 5 6 F P R2
7 8 9 R3
* 0 # R R4
• F: Flash key
• P→T: In pulse mode, this key works as Pulse→Tone key
P→T key can be stored as a digit in pulse or tone mode
• R: Redial function key
• P: Pause key
Normal Dialing
OFF HOOK , D1 , D2 , ..., Dn
1. D1, D2, ..., Dn will be dialed out.
- 4 -
R1
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