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EM91465 Datasheet(PDF) 12 Page - ELAN Microelectronics Corp

Part # EM91465
Description  TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
PDF  24 Pages
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM91465 Datasheet(HTML) 12 Page - ELAN Microelectronics Corp

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EM91465 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND I.P.P. DETECT FUNCTION
12
* This specification are subject to be changed without notice.
9.24.1998
DTMF output frequency (fosc = 3.579545 MHz)
Keyboard scan pin
CCITT standard (Hz)
Actual output (Hz)
Deviation (%)
ROW1 (f1)
697
699.1
0.30
ROW2 (f2)
770
766.2
0.49
ROW3 (f3)
852
847.4
-0.53
ROW4 (f4)
941
947.9
0.73
COL1 (f5)
1209
1215.8
0.56
COL2 (f6)
1336
1331.6
-0.32
COL3 (f7)
1477
1471.8
-0.35
Keyboard debounce time
Tdb
-
20
-
ms
Key tone signal: frequency
Fkt
-
600
-
Hz
duration
Tkt
-
30
-
ms
Pause time
Tp
-
3.6
-
sec.
Pulse to Tone waiting time
Tpt
-
3.6
-
sec.
Flash time
Tf
-
600
-
Row3B, Row4B=NR, NR
-
100
-
ms
Row3B, Row4B=NR, R-Vss
-
80
-
Row3B,Row4B=R-Vss, NR
-
300
-
Row3B,Row4B=R-Vss,R-Vss
Pulse rate
PSR
-
20
-
pps
Row1 = R-Vdd
-
10
-
Row1 = R-Vss
Make/Break ratio
MBR
-
40:60
-
%
Row2 = NR
-
33:66
-
Row2 = R-Vss
Inter-digit pause time
Tidp
-
800
-
ms
PSR = 10 pps
-
500
-
PSR = 20 pps
Minimum tone duration
Tp
96
98
100
Minimum inter-tone pause
Titp
96
98
100
ms
Memory dialing
HD key release hold function
Thdrdb
-
93
-
ms
debounce time
SDO bit time
Tbit
3.8
3.9
4.1
ms
Off-Hook delay time
Tdly
-
300
-
ms
Parameter
Sym.
Min.
Typ.
Max. Unit
Condition
AC ELECTRICAL CHARACTERISTIC
(Ambient temperature is 25
°C, V
DD=2.5V unless otherwise noted, all voltages referenced to Vss,Fosc=3.579545 MHz)



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