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參數(shù)資料
| 型號(hào)： | W91080A |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 無(wú)繩電話/電話 |
| 英文描述： | Tone/Pulse Dialer With Handfree And Keytone Fuctions And One Number Memory(具有一個(gè)數(shù)碼存儲(chǔ)器免提和主鍵音功能的音頻/脈沖撥號(hào)器) |
| 中文描述： | TELEPHONE DIALER CKT, PDIP20 |
| 封裝： | PLASTIC, DIP-20 |
| 文件頁(yè)數(shù)： | 3/12頁(yè) |
| 文件大小： | 93K |
| 代理商： | W91080A |
W91080 SERIES
Publication Release Date: June 1994
- 3 -
Revision A3
Pin Description, continued
SYMBOL
18-PIN
20-PIN
I/O
FUNCTION
HKS
10
12
I
Hook switch input.
HKS = 1: On-hook state. Chip in sleeping mode, no
operation.
HKS = 0: Off-hook state. Chip enabled for normal operation.
This pin must be set in conjunction with
HFI
, HFO.
Refer to description of
HFI
, HFO pins. HKS pin is pulled to
V
DD
by internal resistor.
DP/C5
11
13
O
N-channel open drain dialing pulse output (Figure 1). Flash
key will cause DP to be active in either tone mode or pulse
mode.
DTMF
12
14
O
In pulse mode, remains in low state.
In tone mode, outputs a dual or single tone.
Detailed timing diagram for tone mode is shown in Figure 2
(a, b).
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
14, 6
16, 6
I
Power input pins.
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