N58 Hardware User Guide
Chapter 4 Module Pins
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19
4.2 Pin Description
The following table provides the IO type description and DC characteristics.
Table 4-1 IO type description and DC characteristics
IO Type Description
B
Digital input/output, COMS logic level.
DO
Digital output, COMS logic level.
DI
Digital input, COMS logic level.
PO
Power output.
PI
Power input.
AO
Analog output.
AI
Analog input.
AIO
Analog input/output.
DC characteristics description
Pin type
Pin type description
DC characteristics
P1
Dual voltage USIM interface
voltage type, 1.8 V or 3 V
1.8 V DC characteristics:
V
IH
= 1.26 V to 1.98 V
V
IL
= 0 V to 0.54 V
V
OH
= 1.44 V to 1.98 V
V
OL
= 0 V to 0.36 V
3 V DC characteristics:
V
IH
= 2.1 V to 3.3 V
V
IL
= 0 V to 0.9 V
V
OH
= 2.4 V to 3.3 V
V
OL
= 0 V to 0.6 V
P3
1.8 V digital I/O voltage type
V
IH min
= 1.26 V
V
IL max
= 0.54 V
V
OH min
= 1.44 V
V
OL max
= 0.36 V
Table 4-2 Pin description
Pin Name
Pin No.
I/O Type
Function
DC Characteristics Remarks
Power interface
VBAT
27, 28,
29
PI
Main power
supply input
of
the
module
V
min
= 3.4 V
V
norm
= 3.8 V
V
max
= 4.2 V
The external power
supplies at least 2.5 A
current to VBAT.
VDD_1P8
45
PO
1.8 V power
output
V
norm
= 1.8 V
I
max
= 50 mA
Used only for level
shifting. Leave this pin
floating if it is not used.
