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參數資料
| 型號： | W91473B |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | 14-Memory Tone/Pulse Switchable Dialer With Handfree And Lock Functions(具有14個數碼存儲器、免提和上鎖功能的音頻/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： | 3/20頁 |
| 文件大小： | 236K |
| 代理商： | W91473B |
W91473 SERIES
Publication Release Date: February 1995
- 3 -
Revision A3
PIN DESCRIPTION
SYMBOL
22-PIN
24-PIN
28-PIN
I/O
FUNCTION
Column-
Row
Inputs
1
7
&
18
22
1
7
&
20
24
1
8
&
24
28
I
The keyboard input may be used with
either the standard 7
×
5 keyboard or an
inexpensive single contact (form A)
keyboard. Electronic input with
μ
C can
also be used.
A valid key entry is defined by a single
row being connected to a single column.
XT, XT
9, 10
9, 10
11, 12
I, O
A built-in inverter provides oscillation with
an inexpensive 3.579545 MHz crystal or
ceramic resonator.
T/P
MUTE
11
11
13
O
The T/P MUTE is a conventional CMOS
N-channel open drain output. The output
transistor is switched on during pulse and
tone mode dialing sequence and flash
break. Otherwise, it is switched off.
DP
13
15
17
O
N-channel open drain dialing pulse output
(Figure 1).
Flash key causes DP to go active when in
pulse mode and tone mode.
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.
相關PDF資料 |
PDF描述 |
|---|---|
| W91473AL | 14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473BL | 14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473 | 14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473A | 14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473C | 14-Memory Tone/Pulse Switchable Dialer With Handfree And Lock Functions(具有14個數碼存儲器、免提和上鎖功能的音頻/脈沖可變換撥號器) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W91473BL | 制造商:WINBOND 制造商全稱:Winbond 功能描述:14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473C | 制造商:WINBOND 制造商全稱:Winbond 功能描述:14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473CL | 制造商:WINBOND 制造商全稱:Winbond 功能描述:14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473D | 制造商:WINBOND 制造商全稱:Winbond 功能描述:14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| W91473DL | 制造商:WINBOND 制造商全稱:Winbond 功能描述:14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
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