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參數(shù)資料
| 型號： | W91521 |
| 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(shù)： | 2/16頁 |
| 文件大?。?/td> | 193K |
| 代理商： | W91521 |
W91520N SERIES
- 2 -
PIN CONFIGURATIONS
C4
1
2
3
4
5
6
7
8
9
10
HKS
DTMF
MODE
R4
R3
R2
R1
V
DD
13
18
20
19
17
16
15
14
12
11
HFO
W91520AN/W91521AN
C1
C2
C3
SS
V
XT
XT
T/P MUTE
HFI
H/P MUTE
DP/C5
W91520N/W91521N
1
2
3
4
5
6
7
8
9
HKS
DTMF
MODE
R4
R3
R2
R1
V
DD
12
18
17
16
15
14
10
11
13
C1
C2
C3
C4
SS
V
XT
XT
T/P MUTE
H/P MUTE
DP/C5
PIN DESCRIPTION
SYMBOL
18-PIN
20-PIN
I/O
FUNCTION
Column-
Row
Inputs
1
4
&
15
18
1
4
&
17
20
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
7, 8
I, O
A built-in inverter provides oscillation with an
inexpensive 3.579545 MHz crystal or ceramic
resonator.
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 during dialing
sequence, one-key redial break, and flash break time.
Otherwise, it is switched off.
MODE
13
15
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 (10 ppS; 20 ppS for W91521N/521AN, M/B =
40:60).
Floating mode pin places the dialer in pulse mode
(10 ppS; 20 ppS for W91521N/521AN, M/B =
33.3:66.7).
相關PDF資料 |
PDF描述 |
|---|---|
| W91521A | Tone/Pulse Telephone Dialer |
| W91520AN | TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION |
| W91520N | TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION |
| W91521AN | TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION |
| W91521N | TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| W91521A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Tone/Pulse Telephone Dialer |
| W91521AN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION |
| W91521N | 制造商:WINBOND 制造商全稱:Winbond 功能描述:TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION |
| W91530 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:13-MEMORY TONE/PULSE DIALER WITH SAVE, KEYTONE, LOCK,AND HANDFREE FUNCTION |
| W91530A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:Tone/Pulse Telephone Dialer |
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