hardware design v1.00

Smart Machine Smart Decision
SIM968_Hardware Design_V1.00 2013.02.25
50
Symbol Parameter Min Typ Max Unit
I
IH
High-level input current -10 - 10 uA
I
IL
Low-level input current -10 - 10 uA
V
IH
High-level input voltage 2.4 - - V
V
IL
Low-level input voltage - - 0.4 V
V
OH
High-level output voltage 2.7 - - V
V
OL
Low-level output voltage - - 0.1 V
z These parameters are for digital interface pins, such as keypad, GPIO, I
2
C, UART, LCD, PWMs and DEBUG.
Table 24: Digital interface characteristics of GNSS
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 KΩ
Input Pull-dowm resistance R
PD
40 190 KΩ
Input capacitance C
in
5 pF
Load capacitance C
load
8 pF
Tri-state leakage current I
OZ
-10 10 uA
6.4 SIM Card Interface Characteristics
Table 25: SIM card interface characteristics
Symbol Parameter Min Typ Max Unit
I
IH
High-level input current -10 - 10 uA
I
IL
Low-level input current -10 - 10 uA
1.4 - - V
V
IH
High-level input voltage
2.4 - - V
- - 0.4 V
V
IL
Low-level input voltage
2.4 V
1.7 - - V
V
OH
High-level output voltage
2.7 - - V
- - 0.1 V
V
OL
Low-level output voltage
- - 0.1 V
6.5 VDD_EXT Characteristics
Table 26: VDD_EXT characteristics