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參數資料
| 型號： | W91541 |
| 英文描述： | Tone/Pulse Telephone Dialer |
| 中文描述： | 音頻/脈沖電話撥號器 |
| 文件頁數： | 3/19頁 |
| 文件大?。?/td> | 222K |
| 代理商： | W91541 |
W91540N SERIES
Publication Release Date: May 1997
- 3 -
Revision A2
Pin Configurations, continued
C1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
C4
C3
C2
R4
R1
R2
R3
XT
T/P MUTE
MODE
DTMF
XT
HKS
DP/C5
V
SS
LOCK
V
DD
W91541LN
C1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
C4
C3
C2
R4
R1
R2
R3
XT
MODE
DTMF
HFO
XT
T/P MUTE
HFI
HKS
DP/C5
V
DD
V
SS
LOCK
W91541ALN
PIN DESCRIPTION
SYMBOL
18-PIN
20-PIN
I/O
FUNCTION
Column-Row
Inputs
1
4
&
15
18
1
4
&
17
20
I
The keyboard input is compatible with a standard
5
×
5 keyboard, an inexpensive single contact
(Form A) keyboard, and electronic input.
In normal operation, any single button can be
pushed to produce a dual tone, pulses, or a
function. Activation of two or more buttons will
result in no response except for single tone.
XT
7
7
I
A built-in inverter provides oscillation with an
inexpensive 3.579545 MHz crystal. The oscillator
ceases when a keypad input is not sensed. The
crystal frequency deviation is 0.02%.
XT
8
8
O
Crystal oscillator output pin.
T/P
MUTE
9
9
O
The T/P
MUTE
is a conventional CMOS N-
channel open drain output.
The output transistor is switched on low level
during dialing sequence (both pulse and tone
mode). Otherwise, it is switched off.
相關PDF資料 |
PDF描述 |
|---|---|
| W91541A | Tone/Pulse Telephone Dialer |
| W91542 | Tone/Pulse Telephone Dialer |
| W91542A | Tone/Pulse Telephone Dialer |
| W91541ALN | 10-MEMORY TONE/PULSE DIALER WITH SAVE, KEYTONE,LOCK AND HANDFREE FUNCTION |
| W91541LN | 10-MEMORY TONE/PULSE DIALER WITH SAVE, KEYTONE,LOCK AND HANDFREE FUNCTION |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W91541A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Tone/Pulse Telephone Dialer |
| W91541ALN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:10-MEMORY TONE/PULSE DIALER WITH SAVE, KEYTONE,LOCK AND HANDFREE FUNCTION |
| W91541LN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:10-MEMORY TONE/PULSE DIALER WITH SAVE, KEYTONE,LOCK AND HANDFREE FUNCTION |
| W91542 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Tone/Pulse Telephone Dialer |
| W91542A | 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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