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參數資料
| 型號： | W91440NS |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | Telephone Dialer |
| 中文描述： | 電話撥號器 |
| 文件頁數： | 2/14頁 |
| 文件大小： | 163K |
| 代理商： | W91440NS |
W91440N SERIES
- 2 -
PIN CONFIGURATION
C1
C2
C3
C4
SS
V
XT
XT
1
2
3
4
5
6
7
8
9
T/P MUTE
HKS
DTMF
MODE
R4
R3
R2
R1
VDD
DP
12
18
17
16
15
14
10
11
13
C5
PIN DESCRIPTION
SYMBOL
PIN
I/O
FUNCTION
Column-
Row
Inputs
1
5
&
15
18
I
The keyboard inputs may be used with either a standard 5
×
5
keyboard or an inexpensive single contact (Form A) keyboard.
Electronic input from a
μ
C can also be used.
A valid key in is defined as a single row being connected to a single
column.
XT, XT
7, 8
I, O
A built-in inverter provides oscillation with an inexpensive 3.579545
MHz crystal or ceramic resonator.
T/P
MUTE
9
O
The T/P MUTE is a conventional CMOS N-channel open drain output.
The output transistor is switched on during dialing sequence and flash
break time. Otherwise, it is switched off.
MODE
13
I
Pulling mode pin to V
SS
places the dialer in tone mode.
Pulling mode pin to V
DD
places the dialer in pulse mode with M/B ratio
40:60 (10 ppS only for W91442N and 20 ppS for W91443N).
Floating mode pin places the dialer in pulse mode with M/B ratio 33:67
(10 ppS only for W91442N and 20 ppS for W91443N).
相關PDF資料 |
PDF描述 |
|---|---|
| W9145 | 15-MEMORY TONE/PULSE DIALER WITH LOCK AND HANDFREE FUNCTION |
| W9145A | 15-MEMORY TONE/PULSE DIALER WITH LOCK AND HANDFREE FUNCTION |
| 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 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W91442 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Tone/Pulse Telephone Dialer |
| W91442N | 制造商:WINBOND 制造商全稱:Winbond 功能描述:10-MEMORY TONE/PULSE DIALER WITH SAVE FUNCTION |
| W91443 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Tone/Pulse Telephone Dialer |
| W91443N | 制造商:WINBOND 制造商全稱:Winbond 功能描述:10-MEMORY TONE/PULSE DIALER WITH SAVE FUNCTION |
| W91444 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:13-MEMORY TONE/PULSE DIALER WITH SAVE FUNCTION |
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