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參數資料
| 型號： | W91F842AN |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | 23-Flash Memory Tone/Pulse Dialer With Handfree,Hold And Lock Functions(具有23個閃速存儲器、免提、保持和上鎖功能的音頻/脈沖撥號器) |
| 中文描述： | TELEPHONE DIALER CKT, PDIP24 |
| 封裝： | 0.600 INCH, PLASTIC, DIP-24 |
| 文件頁數： | 4/23頁 |
| 文件大小： | 207K |
| 代理商： | W91F842AN |
W91F840N SERIES
- 4 -
Pin Description, continued
SYMBOL
22-PIN 24-PIN 28-PIN I/O
6
6
FUNCTION
LOCK
(W91F840LN/
F840ALN/
F841ALN only)
7
I
The function of this terminal is to prevent "0"
dialing and "9" dialing under PABX system long
distance call control. When the first key input after
reset is 0 or 9, all key inputs, including the 0 or 9
key, become invalid and the chip generates no
output. The telephone is reinitialized by a reset.
The function of the LOCK pin is shown below:
LOCK PIN
FUNCTION
V
DD
V
SS
Floating
"0", "9" dialing inhibited
Normal dialing Mode
"0" dialing inhibited
H/P MUTE
7
7
8
I
The H/P MUTE is a conventional inverter output.
During pulse dialing, flash break or hold period, this
output is active high; otherwise, it remains in low
state.
N-channel open drain dialing pulse output.
Flash key will cause
DP
to be active in either tone
mode or pulse mode.
The timing diagram for pulse mode is shown in
Figure 1(a, b).
During pulse dialing, this pin remains in a low state
regardless of the keypad input. In tone mode, it will
output a dual or single tone.
A detailed timing diagram for tone mode is shown in
Figure 2(a, b).
DP
13
15
18
O
DTMF
14
16
19
O
R1
R2
R3
R4
C1
C2
C3
Specified
697
770
852
941
1209
1336
1477
699
766
848
948
1216
1332
1472
Actual
+0.28
-0.52
-0.47
+0.74
+0.57
-0.30
-0.34
Error %
OUTPUT FREQUENCY
V
DD
, V
SS
16, 8
18, 8
21, 9
I
Power input pins for the dialer chip. V
DD
is the
power and V
SS
is the ground.
相關PDF資料 |
PDF描述 |
|---|---|
| W91F842N | 23-Flash Memory Tone/Pulse Dialer With Handfree,Hold And Lock Functions(具有23個閃速存儲器、免提、保持和上鎖功能的音頻/脈沖撥號器) |
| W91F843AN | 23-Flash Memory Tone/Pulse Dialer With Handfree,Hold And Lock Functions(具有23個閃速存儲器、免提、保持和上鎖功能的音頻/脈沖撥號器) |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| W91F842N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| W91F843AN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
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| W91S1D22-12 | 制造商:Magnecraft 功能描述: |
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