Winbond Electronics W91316, W91314A, W91314, W91312A, W91312 Datasheet
W91310 SERIES
TONE/PULSE DIALER WITH
REDIAL FUNCTION
GENERAL DESCRIPTION
The W91310 series are monolithic ICs that provide the necessary signals for either pulse or tone
dialing. The W91310 series feature a redial memory.
FEATURES
• DTMF/Pulse switchable dialer
• 32 digits for redial memory
• Pulse-to-tone (P→T) keypad for long distance call operation
• Break/Make ratio is selectable by pin option
• Uses 4 × 4 keyboard
• Easy operation with redial, flash, pause, and P→T keypads
• Flash, pause, P→T (pulse-to-tone) can be stored as a digit in memory
• Minimum tone output duration: 100 mS
• Minimum intertone pause: 100 mS
• On-chip power-on reset
• Uses 3.579545 MHz crystal or ceramic resonator
• Packaged in 18-pin plastic DIP
• The different dialers in the W91310 series are shown in the following table:
TYPE NO. PULSE (ppS) FLASH (mS) FLASH PAUSE (mS) PAUSE (S)
W91312/A 10/20 600/300 600/300 2.0
W91314/A 10/20 73/100 140/100 3.6
W91316 10/20 600 600 3.6
Publication Release Date: January 1995
- 1 - Revision A3
PIN CONFIGURATION
XT
MUTE
MUTE
HKS
HKS
HKS
HKS
W91310 SERIES
C1
C2
C3
C4
B/M
V
XT
XT
T/P MUTE
1
2
3
4
5
SS
6
7
8
9
18
17
16
15
14
13
12
11
10
R4
R3
R2
R1
DD
V
MODE
DTMF
DP
HKS
PIN DESCRIPTION
SYMBOL PIN I/O FUNCTION
Column-
Row Inputs
1−4
&
15−18
XT,
T/P
7, 8 I, O A built-in inverter provides oscillation with an inexpensive
9 O
MODE 13 I Pulling mode pin to VSS places the dialer in tone mode. Pulling
10 I
I
The keyboard input may be from either the standard 4 × 4 keyboard
or an inexpensive single contact (form A) keyboard. Electronic
input from a µC can also be used. A valid key entry 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 pulse and tone
mode dialing sequence and flash break. Otherwise, it is switched
off.
mode pin to VDD places the dialer in pulse mode (10 ppS). Leaving
mode pin floating places the dialer in pulse mode (20 ppS).
Hook switch input.
no operation.
operation. The
= 1: On-hook state. Chip in sleeping mode,
= 0: Off-hook state. Chip enabled for normal
pin is pulled to VDD by an internal resistor.
- 2 -
W91310 SERIES
DP
Pin Description, continued
SYMBOL PIN I/O FUNCTION
11 O N-channel open drain dialing pulse output (Figure 1). Flash key will
cause DP to go active in both pulse mode and tone mode.
DTMF 12 O In pulse mode, remains in 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.
B/M 5 I The break make ratio is 60:40 if B/M = 1 and is 66.6:33.3 if B/M =
0. This pin has no function in DTMF mode.
Publication Release Date: January 1995
- 3 - Revision A3
BLOCK DIAGRAM
W91310 SERIES
XT
XT
ROW
(R1 to R4)
COLUMN
(C1 to C4)
DTMF
KEYBOARD
INTERFACE
D/A
CONVERTER
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1 C2 C3 C4
HKS
B/M
MODE
READ/WRITE
COUNTER
RAM
LOCATION
LATCH
ROW & COLUMN
PROGRAMMABLE
COUNTER
SYSTEM CLOCK
GENERATION
CONTROL
LOGIC
PULSE
CONTROL
LOGIC
DATA LATCH
& DECODER
T/P MUTE
DP
1 2 3 R1
4 5 6 F R2
7 8 9
P→T
R3
* 0 # R/P R4
• F: Flash key
• R/P: Redial and pause function key
• P→T: Pulse mode to tone mode
Normal Dialing
OFF HOOK , D1 , D2 , ..., Dn
1. D1, D2, ..., Dn will be dialed out.
2. Dialing length is unlimited, but redial is inhibited if length oversteps 32 digits.
- 4 -
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