EM91401CP

Manufacturer Part NumberEM91401CP
DescriptionTone/pulse switchable dialer with LCD interface and dual tone melody generator
ManufacturerELAN Microelectronics Corp
EM91401CP datasheet
 


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Page 10/23:

ABSOLUTE MAXIMUM RATINGS

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phone handset to prevent that the dialing signal (DTMF) is coupling by the Microphone of the phone handset.
(such as pocket dialer)
i. In idle state, HKS is from “High” to “Low” (pick up handset action).
ii. In idle state, turn on handfree function.
iii. The flash operation ( F key ).

ABSOLUTE MAXIMUM RATINGS

Items
Power supply voltage
Input voltage range
Operating temperature
Storage temperature
Power consumption
ELECTRICAL CHARACTERISTICS
(Ambient temperature is 25 C, V
=2.5V unless otherwise noted, all voltages referenced to V
DD
Parameter
Operating voltage
Operating current(HKS=0)
Memory retention current
Standby current
HKS, HFI & DRING
pins: input voltage
HFO & HDO pins source current
PO, HFO, XMUTE, RMUTE
& SDO pins: sink current
PO, XMUTE, RMUTE and SDO
pins: leakage current
HFI pin input resistance
DRING pin input resistance
Keyboard scanning pins
output current (except COL4/KT)
COL4/KT source current
sink current
* This specification are subject to be changed without notice.
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
(Ambient temperature is 25 C, all voltages referenced to V
Sym.
Rating
V
6.0 Vdc
DD
V
V
-0.3V ~ V
IN
SS
T
-25 ~ +70
OPR
T
-55 ~ 150
STO
P
500
D
Sym.
Min.
Typ.
Pulse
2.0
-
Tone
2.0
-
Pulse
Idd
-
0.15
Tone
-
0.3
Pulse
-
0.15
Tone
-
0.3
Imrt
-
0.001
HKS=1 Istby
-
0.001
HKS=0
-
1
HKS=1
-
0.001
HKS=0
-
10
ViH
0.8Vdd
-
ViL
Vss
-
IoH
0.2
-
IoL
-0.2
-
IoH
-
-
Rhfi
-
200
Rdring
-
100
IoH
2
10
IoL
200
400
IoH
0.2
-
IoL
0.2
-
EM91401 SERIES
)
SS
Unit
V
+0.3V
V
DD
C
C
mW
, Fosc=3.579545 MHz)
SS
Max. Unit
Condition
5.5
V
unload
5.5
0.3
unload
0.5
mA
0.3
with pull up/down
0.5
resistor * 8
0.1
uA
HKS=1,Vdd=1V
0.1
unload
10
uA
0.1
with pull up/down
30
resistor * 8
Vdd
V
0.2Vdd
-
mA
Vo = 2.0 V
-
mA
Vo = 0.5 V
0.001 uA
Vo = Vdd
-
K
Vhfi = Vss
-
K
Vdeing=Vss
50
uA
Vksn=Vss
800
Vksn=Vdd
-
mA
Vo=2.0V
-
Vo=0.5V
10.1.1997
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