
Smart Machine Smart Decision
SIM68R_Hardware Design_V1.02
32
2013.01.22
5
Electrical, Reliability and Radio Characteristics
5.1
Absolute Maximum Ratings
The absolute maximum ratings stated in Table 7 are stress ratings under non-operating conditions. Stresses
beyond any of these limits will cause permanent damage to SIM68R.
Table 7: Absolute maximum ratings
Parameter
Min
Max
Unit
VCC
-
4.3
V
V_ANT
-5.5V
+5.5
V
RF_IN
-
3.08
V
V_BACKUP
-
4.6
V
I/O pin voltage
-
3.6
V
Storage temperature
-45
+125
℃
Operating Temperature
-40
+85
℃
5.2
Recommended Operating Conditions
Table 8: SIM68R operating conditions
Parameter
Symbol
Min
Typ
Max
Unit
Operating temperature range
-40
+25
+85
℃
Main supply voltage
VCC
2.8
3
4.3
V
VCC_RF
2.7
2.8
2.9
V
Active antenna supply voltage
output
Imax
20
mA
Backup battery voltage
V_BACKUP 2.3
3.6
V
Table 9: SIM68R standard IO features
Parameter
Symbol
Min
Typ
Max
Unit
Low level output voltage
Test conditions IOL = 2mA and 4.0mA
V
ol
-0.3
0.40
V
High level output voltage
Test conditions IOL = 2mA and 4.0mA
V
oh
2.4
3.1
V
Low level input voltage
V
il
-0.3
0.8
V
High level input voltage
V
ih
2.0
3.6
V
Input Pull-up resistance
R
PU
40
190
K
Ω
Input Pull-dowm resistance
R
PD
40
190
K
Ω
Input capacitance
C
in
5
pF