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參數資料
| 型號： | W91530A |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | Tone/Pulse Telephone Dialer |
| 中文描述： | 音頻/脈沖電話撥號器 |
| 文件頁數： | 3/19頁 |
| 文件大小： | 228K |
| 代理商： | W91530A |
W91530N SERIES
Publication Release Date: May 1997
- 3 -
Revision A3
PIN DESCRIPTION
SYMBOL
18-PIN
20-PIN
I/O
FUNCTION
Column-
Row Inputs
1
4
&
15
18
1
4
&
17
20
I
The keyboard input is compatible with a standard 5 x 5
keyboard, an inexpensive single contact (Form A)
keyboard, and electronic input.
In normal operation, any single button can be pushed to
produce dual tone, pulses, or functions. Activation of two or
more buttons will result in no response except for single
tone.
XT
7
7
I
A built-in inverter provides oscillation with an inexpensive
3.579545 MHz crystal. The oscillator ceases when a
keypad input is not sensed. The crystal frequency deviation
is 0.02%.
XT
8
8
O
Crystal oscillator output pin.
T/P MUTE
9
9
O
The T/P MUTE is a conventional CMOS N-channel open
drain output.
The output transistor is switched on low level during dialing
sequence (both pulse and tone mode). Otherwise, it is
switched off.
MODE
13
15
I
Pulling mode pin to V
SS
places dialer in tone mode.
Pulling mode pin to V
DD
places dialer in pulse mode (10
ppS) with M/B ratio of 40:60 (W91532/532AN is 20 ppS).
Leaving mode pin floating places dialer in pulse mode (10
ppS) with M/B ratio of 33.3:66.7 (W91532/532AN is 20
ppS).
HKS
10
12
I
The HKS (hook switch) input is used to sense whether the
handset is on-hook or off-hook.
In on-hook state, HKS = 1: chip is in sleeping mode, no
operation.
In off-hook state, HKS = 0: chip is enabled for normal
operation.
HKS pin is pulled to V
DD
by internal resistor.
The key tone output is a conventional CMOS inverter. The
key tone is generated when any valid key is pressed; the
KT pin generates a 1.2 KHz square wave at 35 mS. When
no key is pressed, the KT pin remains in low state.
KT
5
(except
W91531LN)
5
(except
W91531ALN)
O
相關PDF資料 |
PDF描述 |
|---|---|
| W91530NS | Telephone Dialer |
| W91531 | Tone/Pulse Telephone Dialer |
| W91531A | Tone/Pulse Telephone Dialer |
| W91532 | Tone/Pulse Telephone Dialer |
| W91532A | Tone/Pulse Telephone Dialer |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W91530AN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:13-MEMORY TONE/PULSE DIALER WITH SAVE, KEYTONE, LOCK,AND HANDFREE FUNCTION |
| W91530N | 制造商:WINBOND 制造商全稱:Winbond 功能描述:13-MEMORY TONE/PULSE DIALER WITH SAVE, KEYTONE, LOCK,AND HANDFREE FUNCTION |
| W91530NS | 制造商:WINBOND 制造商全稱:Winbond 功能描述:Telephone Dialer |
| W91531 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:Tone/Pulse Telephone Dialer |
| W91531A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:Tone/Pulse Telephone Dialer |
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