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Si4320
GENERAL DEVICE SPECIFICATIONS
All voltages are referenced to V ss , the potential on the ground reference pin VSS.
Absolute Maximum Ratings (non-operating)
Symbol
V dd
V in
I in
ESD
T st
T ld
Parameter
Positive supply voltage
Voltage on any pin except open collector outputs
Input current into any pin except VDD and VSS
Electrostatic discharge with human body model
Storage temperature
Lead temperature (soldering, max 10 s)
Min
-0.5
-0.5
-25
-55
Max
6.0
V dd +0.5
25
1000
125
260
Units
V
V
mA
V
o C
o C
Recommended Operating Range
Symbol
V dd
T op
Parameter
Positive supply voltage
Ambient operating temperature
Min
2.2
-40
Max
5.4
85
Units
V
oC
ELECTRICAL SPECIFICATION
(Test Conditions: T op = 27 o C; V dd = V oc = 3.3 V)
DC Characteristics
Symbol
Parameter
Conditions/Notes
Min
Typ
Max
Units
315 / 433 MHz bands
9
11
I dd
Supply current
868 MHz band
10.5
12.5
mA
915 MHz band
12
14
I pd
I lb
I wt
Standby current
Low battery voltage detector current
consumption
Wake-up timer current consumption
(Note 1)
All blocks disabled
0.3
0.5
1.5
μA
μA
μA
I x
V lb
Idle current
Low battery detect threshold
Crystal oscillator and base band parts
are ON
Programmable in 0.1 V steps
2.25
3.0
3.5
5.35
mA
V
V lba
V il
V ih
Low battery detection accuracy
Digital input low level
Digital input high level
0.7*V dd
+/-3
0.3*V dd
%
V
V
I il
I ih
Digital input current
Digital input current
V il = 0 V
V ih = V dd , V dd = 5.4 V
-1
-1
1
1
μA
μA
V ol
V oh
Digital output low level
Digital output high level
I ol = 2 mA
I oh = -2 mA
V dd -0.4
0.4
V
V
Note 1:
Using the internal wake-up timer and counter reduces the overall current consumption, which should permit approximately 6 months
operation from a 1500mAh battery.
8
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