SimCom SIM68R, Hardware Design, Page: 26 / 34

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