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參數資料
| 型號： | W91580C |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | 24-Memory Tone/Pulse Switchable Dialer With Handfree And Hold Functions(具有24個數碼存儲器、免提和保持功能的音頻/脈沖可變換撥號器) |
| 中文描述： | TELEPHONE DIALER CKT, PDIP28 |
| 封裝： | PLASTIC, DIP-28 |
| 文件頁數： | 3/19頁 |
| 文件大小： | 216K |
| 代理商： | W91580C |
W91580 SERIES
Publication Release Date: Auguest 1995
- 3 -
Revision A3
Pin Description, continued
SYMBOL
22-PIN
24-PIN
28-PIN
I/O
FUNCTION
MODE
15
17
19
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, M/B = 2:3).
Leaving mode pin floating places the dialer in
pulse mode (10 ppS, M/B = 1:2).
HKS
12
14
16
I
Hook switch input.
HKS = 1: On-hook state. Chip in sleep mode, no
operation.
HKS = 0: Off-hook state. Chip enabled for normal
operation.
HKS pin is pulled to V
DD
by internal resistor.
DP/C9
13
15
17
O
N-channel open drain dialing pulse output
(see Figure 1).
Flash key causes DP to go active when in pulse
mode and tone mode.
NC
17
19
22
-
No connection.
DTMF
14
16
18
O
In pulse mode, remains in low state at all times. In
tone mode, outputs a dual or single tone. Detailed
timing diagram for tone mode is shown in Figure 2.
OUTPUT FREQUENCY
Specified
Actual
Error %
R2
R3
R4
C1
C2
C3
697
770
852
941
1209
1336
1477
699
766
848
948
1216
1332
1472
+0.28
-0.52
-0.47
+0.74
+0.57
-0.30
-0.34
R1
V
DD,
V
SS
16, 8
18, 8
20, 10
I
Power input pins.
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