EM91401B EMC [ELAN Microelectronics Corp], EM91401B Datasheet - Page 10

• Manufacturer Part Number: EM91401B
• Description: TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
• Manufacturer: EMC [ELAN Microelectronics Corp]

ELECTRICAL CHARACTERISTICS
(Ambient temperature is 25 C, V
* This specification are subject to be changed without notice.
ABSOLUTE MAXIMUM RATINGS
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
Power supply voltage
Input voltage range
Operating temperature
Storage temperature
Power consumption
phone handset to prevent that the dialing signal (DTMF) is coupling by the Microphone of the phone handset.
(such as pocket dialer)
Parameter
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 ).
Items
sink current
DD
=2.5V unless otherwise noted, all voltages referenced to V
Pulse
Tone
Pulse
Tone
Pulse
Tone
HKS=1 Istby
HKS=0
HKS=1
HKS=0
Sym.
T
T
V
V
P
OPR
STO
DD
IN
D
(Ambient temperature is 25 C, all voltages referenced to V
Idd
Imrt
ViH
ViL
IoH
IoL
IoH
Rhfi
Rdring
IoH
IoL
IoH
IoL
Sym.
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
0.8Vdd
Min.
Vss
-0.2
200
2.0
2.0
0.2
0.2
0.2
2
-
-
-
-
-
-
-
-
-
-
-
-
V
SS
-0.3V ~ V
0.001
0.001
0.001
Typ.
Rating
-25 ~ +70
-55 ~ 150
0.15
0.15
200
100
400
0.3
0.3
6.0 Vdc
10
10
1
-
-
-
-
-
-
-
-
-
500
AND DUAL-TONE MELODY GENERATOR
0.2Vdd
DD
Vdd
Max. Unit
0.001 uA
800
5.5
5.5
0.3
0.5
0.3
0.5
0.1
0.1
0.1
+0.3V
10
30
50
-
-
-
-
-
-
V
mA
uA
uA
V
mA
mA
K
K
uA
mA
SS
, Fosc=3.579545 MHz)
unload
HKS=1,Vdd=1V
unload
with pull up/down
Vo = Vdd
Vhfi = Vss
Vdeing=Vss
Vksn=Vdd
Vo=0.5V
unload
resistor * 8
Vo = 2.0 V
Vo = 0.5 V
Vksn=Vss
Vo=2.0V
with pull up/down
resistor * 8
Condition
EM91401 SERIES
SS
)
mW
Unit
V
V
10.1.1997
C
C
10