EM91220 查看數據表（PDF） - ELAN Microelectronics
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EM91220 Datasheet PDF : 20 Pages
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EM91220 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
ABSOLUTE
MAXIMUM
RATINGS(Ambient
temperature
is
25
°C,
all
voltages
referenced
to
V)
SS
Items
Sym.
Rating
Unit
Power supply voltage
V
6.0 Vdc
V
DD
Input voltage range
V
V -0.3V ~ V +0.3V
V
IN
SS
DD
Operating temperature
TOPR
0~ +50
°C
Storage temperature
TSTO
-55 ~ 125
°C
Power consumption
PD
500
mW
ELECTRICAL CHARACTERISTICS
(Ambient
temperature
is
25
°C,
V =2.5V
DD
unless
otherwise
noted,
all
voltages
referenced
to
V,
SS
Fosc=3.579545
MHz)
Parameter
Sym. Min. Typ. Max. Unit Condition
Operating voltage
Operating current(HKS=0)
Memory retention current
Pulse
Tone
Pulse Idd
Tone
Pulse
Tone
Imrt
2.0 -
5.5 V unload
2.0 -
5.5
- 0.15 0.3
unload
- 0.3 0.5 mA
- 0.15 0.3
with pull up/down
- 0.3 0.5
resistor * 8
- 0.001 0.1 uA HKS=1,Vdd=1V
Standby current
HKS, HFI
HKS=1 Istby
- 0.001 0.1
unload
HKS=0
-
1
10 uA
HKS=1
-0.001 0.1
with pull up/down
HKS=0
- 10 30
resistor * 8
ViH 0.8Vdd - Vdd V
pins: input voltage
HFO & PM pins source current
PO, HFO, XMUTE,
ViL Vss - 0.2Vdd
IoH
0.2 -
- mA Vo = 2.0 V
IoL
-0.2 -
- mA Vo = 0.5 V
& PM, SDO pins: sink current
PO, XMUTE and SDO
IoH
-
- ±0.001 uA Vo = Vdd
pins: leakage current
HFI pin input resistance
Rhfi
- 200
- KΩ Vhfi = Vss
Keyboard scanning pins
IoH
2 10 50 uA Vksn=Vss
output current (except COL4/KT)
IoL
200 400 800
Vksn=Vdd
COL4/KT source current
IoH
0.2 -
- mA Vo=2.0V
sink current
IoL
0.2 -
-
Vo=0.5V
* This specification are subject to be changed without notice.
10.1.1997 9
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