em91401

Manufacturer Part Numberem91401
DescriptionTone/pulse Switchable Dialer With Lcd Interface And Dual-tone Melody Generator
ManufacturerELAN Microelectronics Corp
em91401 datasheet
 
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ELECTRICAL CHARACTERISTIC
(Ambient temperature is 25 C, V
=2.5V unless otherwise noted, all voltages referenced to Vss,Fosc=3.579545 MHz)
DD
Parameter
Keyboard debounce time
Key tone signal:
frequency
duration
Pause time
Pulse to Tone waiting time
Flash time
Pulse rate
Make/Break ratio
Inter-digit pause time
DTMF pin: sink current
DTMF signal DC level
DTMF signal: ac level
pre-emphase
distortion
load resistance
Minimum tone duration
Minimum inter-tone pause
Melody output signal:
main tone ac level
Sub-tone
HD key release hold function
debounce time
SDO every bit time
Off-Hook delay time
* This specification are subject to be changed without notice.
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
Sym.
Min.
Typ.
Max. Unit
Tdb
-
20
-
Fkt
-
600
-
Tkt
-
30
-
Tp
-
3.6
-
Tpt
-
3.6
-
Tf
-
600
-
-
100
-
-
80
-
-
300
-
PSR
-
20
-
-
10
-
MBR
-
40:60
-
-
33:66
-
Tidp
-
800
-
-
500
-
IoL
-0.2
-
-
Vdc
0.5
-
0.75
Vdtmf
142
160
180 mVrms Row group
Twist
1
2
3
THD
-
-30
-23
ZL
5
-
-
Tp
96
98
100
Titp
96
98
100
(-23.3)
(dBm)
Vmtac
48
53
58
mVrms Vdd =2.0V ~ 5.5V
(-25.3)
(dBm)
Vstac
37
42
47
mVrms Vdd =2.0V ~ 5.5V
Thdrdb
-
93
-
Tbit
3.8
3.9
4.1
Tdly
-
300
-
EM91401 SERIES
Condition
ms
Hz
ms
sec.
sec.
Row3B, Row4B=NR, NR
ms
Row3B, Row4B=NR, R-Vss
Row3B,Row4B=R-Vss, NR
Row3B,Row4B=R-Vss,R-Vss
pps
Row1 = R-Vdd
Row1 = R-Vss
%
Row2 = NR
Row2 = R-Vss
ms
PSR = 10 pps
PSR = 20 pps
mA
Vdtmf = 0.5 V
Vdd
Vdd = 2.0V ~ 5.5V
dB
Column - Row
dB
RL = 5 K
K
THD
23dB
ms
Memory dialing
ms
ms
ms
10.1.1997
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