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參數(shù)資料
| 型號(hào)： | W9145A |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | 15-MEMORY TONE/PULSE DIALER WITH LOCK AND HANDFREE FUNCTION |
| 中文描述： | TELEPHONE DIALER CKT, PDIP24 |
| 封裝： | DIP-24 |
| 文件頁數(shù)： | 3/18頁 |
| 文件大小： | 209K |
| 代理商： | W9145A |
W9145 SERIES
Publication Release Date: August 1996
- 3 -
Revision A4
SYMBOL
22-PIN
24-PIN
I/O
FUNCTION
Column-
Row
Inputs
1
4
&
18
22
1
4
&
20
24
I
Keyboard inputs may be connected to either a standard
keyboard, an inexpensive signal contact (Form A)
keyboard, or electronic input from a
μ
C. A valid key entry
is defined by a single row being connected to a single
column.
XT,
XT
6, 7
6, 7
I, O
A built-in inverter provides oscillation by means of an
inexpensive 3.579545 MHz crystal or ceramic resonator.
T/P
MUTE
8
8
O
The T/P MUTE is a conventional CMOS inverter that
pulls to V
DD
in the absence of keypad input and pulls to
V
SS
when an address keypad entry is sensed (excluding
the * and # keypads in pulse mode). When any keypad in
row 5 and column 5 is pushed, the mute out remains at
high level.
MODE
14
16
I
Pull to V
SS
to enable tone mode. Pull to V
DD
to enable
pulse mode (10 ppS).
HKS
9
9
I
Hook switch input. When pulled to high, chip is in on-hook
state (no operation). When pulled to low, chip is in off-
hook state (enabled for normal operation). This pin is
pulled to V
DD
by internal resistor.
Note: This pin operates in conjunction with the handfree
control pins; for further information see description of
handfree control pins below.
B/M
16
16
I
B/M = 1: Break/Make ratio is 60:40.
B/M = 0: Break/Make ratio is 67:33.
This pin has no function in tone mode.
V
DD
,
V
SS
X MUTE
17, 5
19, 5
I
Power input pins.
13
15
O
The X MUTE is a conventional CMOS inverter that in tone
mode is active while a DTMF signal is being transmitted.
In pulse mode, this output remains low at all times.
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| W9145AL | 15-MEMORY TONE/PULSE DIALER WITH LOCK AND HANDFREE FUNCTION |
| W9145L | 15-MEMORY TONE/PULSE DIALER WITH LOCK AND HANDFREE FUNCTION |
| W91460N | 3-MEMORY TONE/PULSE DIALER WITH SAVE FUNCTION |
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| W9145AL | 制造商:WINBOND 制造商全稱:Winbond 功能描述:15-MEMORY TONE/PULSE DIALER WITH LOCK AND HANDFREE FUNCTION |
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| W91460N | 制造商:WINBOND 制造商全稱:Winbond 功能描述:3-MEMORY TONE/PULSE DIALER WITH SAVE FUNCTION |
| W91460NS | 制造商:WINBOND 制造商全稱:Winbond 功能描述:Telephone Dialer |
| W91462 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Tone/Pulse Telephone Dialer |
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