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參數資料
| 型號： | W91F820N |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | 13-FLASH MEMORY TONE/PULSE DIALER WITH HANDFREE, LOCK AND HOLD FUNCTIONS |
| 中文描述： | TELEPHONE DIALER CKT, PDIP20 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-20 |
| 文件頁數： | 4/20頁 |
| 文件大小： | 231K |
| 代理商： | W91F820N |
Preliminary W91F820N SERIES
- 4 -
Pin Description, continued
SYM.
H/P MUTE
20-PIN 22-PIN
6
I/O
I
FUNCTION
6
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
12
14
O
DTMF
14
15
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
15, 7
17, 7
I
Power input pins for the dialer chip. V
DD
is the power and V
SS
is
the ground.
I, O Handfree control pins.
A low pulse on the HFI input pin toggles the handfree control
state. The status of the handfree control state is listed in the
following table:
HFI, HFO
-
11, 12
HOOK SW.
-
On Hook
Off Hook
On Hook
Off Hook
Off Hook
CURRENT STATE
NEXT STATE
HFO
Low
High
High
-
Low
High
INPUT
HFI
HFI
HFI
Off Hook
On Hook
On Hook
HFO
High
Low
Low
Low
Low
High
DIALING
Yes
No
Yes
Yes
No
Yes
The HFI pin is pulled to V
DD
by an internal resistor.
A detailed timing diagram is shown in Figure 3.
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| W91F822N | 13-FLASH MEMORY TONE/PULSE DIALER WITH HANDFREE, LOCK AND HOLD FUNCTIONS |
| W91F840N | 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) |
| W91F841ALN | 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) |
| W91F841AN | 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) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W91F820NSERIES | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:13-FLASH MEMORY TON/PULSE DIALER WITH HANDFREE. LOCK AND HOLD FUNCTIONS |
| W91F822AN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:13-FLASH MEMORY TONE/PULSE DIALER WITH HANDFREE, LOCK AND HOLD FUNCTIONS |
| W91F822N | 制造商:WINBOND 制造商全稱:Winbond 功能描述:13-FLASH MEMORY TONE/PULSE DIALER WITH HANDFREE, LOCK AND HOLD FUNCTIONS |
| W91F840ALN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| W91F840AN | 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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