參數(shù)資料
型號: W91040
文件頁數(shù): 2/11頁
文件大?。?/td> 202K
代理商: W91040
W91210 SERIES
- 2 -
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
DD
V
R4
R3
DTMF
R2
R1
HKS
14
15
16
11
12
13
10
C3
SS
V
MODE
XT
XT
T/P MUTE
C1
C2
DP/C4
W91212/W91214/W91214A/W91216
PIN DESCRIPTION
SYMBOL
16-PIN
I/O
FUNCTION
Column-
Row Inputs
1
3
&
13
16
I
The keyboard input may be from either the standard 4
×
4 keyboard
or an inexpensive single contact (form A) keyboard. Electronic
input from a
μ
C can also be used. A valid key entry is defined by a
single row being connected to a single column.
XT, XT
6, 7
I, O
A built-in inverter provides oscillation with an inexpensive 3.579545
MHz crystal or ceramic resonator.
T/P MUTE
8
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 sequences and flash break. Otherwise, it is switched
off.
MODE
4
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).
If the mode pin is left floating, the dialer is in pulse mode
(10 ppS, M/B = 1:2).
相關(guān)PDF資料
PDF描述
W91212 Tone/Pulse Dialer With Redial Function(具有重撥功能的音頻/脈沖撥號器)
W91214 Tone/Pulse Dialer With Redial Function(具有重撥功能的音頻/脈沖撥號器)
W91214A Tone/Pulse Dialer With Redial Function(具有重撥功能的音頻/脈沖撥號器)
W91216 Tone/Pulse Dialer With Redial Function(具有重撥功能的音頻/脈沖撥號器)
W91210SERIES Tone/Pulse Dialer With Redial Function
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