EM91240AP EMC [ELAN Microelectronics Corp], EM91240AP Datasheet - Page 10

• Manufacturer Part Number: EM91240AP
• Description: TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
• Manufacturer: EMC [ELAN Microelectronics Corp]

ELECTRICAL CHARACTERISTIC
DTMF output frequency
* This specification are subject to be changed without notice.
(Ambient temperature is 25 C, V
Keyboard debounce time
Key tone signal:
frequency
present duration
Pause time and pulse to tone
Flash time
Flash pause 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
SDO every bit time
ROW1 (f1)
ROW2 (f2)
ROW3 (f3)
ROW4 (f4)
COL1 (f5)
COL2 (f6)
COL3 (f7)
Keyboard scan pin
Parameter
CCITT standard (Hz)
(fosc = 3.579545 MHz)
DD
=2.5V unless otherwise noted, all voltages referenced to Vss,Fosc=3.579545 MHz)
1209
1336
1477
697
770
852
941
Sym.
Tdb
Fkt
Tkt
Tp
Tpt
Tf
Tfp
PSR
MBR
Tidp
IoL
Vdc
Vdtmf
Twist
THD
ZL
T
Titp
Tbit
D
Min.
-0.2
142
0.5
3.8
96
88
81
96
88
81
1
5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
40:60
33:66
Typ.
600
100
300
300
800
500
600
160
-30
Actual output (Hz)
3.6
3.9
30
80
10
98
90
83
98
90
83
20
20
2
2
-
-
-
1215.8
1331.6
1471.8
699.1
766.2
847.4
947.9
Max. Unit
0.75
180 mVrms Row group
100
100
-23
4.1
92
85
92
85
3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
sec.
ms
ms
ms
Hz
ms
sec.
ms
pps
%
mA
Vdd
dB
dB
K
ms
ms
ms
COL2=R-Vss
Row3, Row4=NR, NR
Row3, Row4=NR, R-Vss
Row3, Row4=R-Vss,R-Vss
PSR = 10 pps
PSR = 20 pps
Column - Row
THD
Memory dialing
Memory dialing
COL2=NR
Row3, Row4=R-Vss, NR
Row1 = R-Vdd
Row1 = R-Vss
Row2 = NR
Row2 = R-Vss
Vdtmf = 0.5 V
Vdd = 2.0V ~ 5.5V
RL = 5 K
Deviation (%)
Condition
23dB
-0.32
-0.35
-0.53
0.30
0.49
0.73
0.56
EM91240 SERIES
10.1.1997
10