© Microhard Systems Inc.
Confidential
23
2.0 Hardware Description
2.4.2 Absolute Maximum Ratings
Stresses above the absolute maximum ratings listed in
Table 2-2: Voltage Characteristics
and
Table 2-3: Current Characteristics
may cause permanent damage to the device. These
are stress ratings only and functional operation of the device at these conditions is not
implied. Exposure to maximum rating conditions for extended periods may affect device
reliability.
2.4.3 Operating Conditions
2.4.3.1 Operating Conditions at Power-up / Power-down
The parameters given in
Table 2-4: Operating Conditions at Power-up/ Power-down
are
derived from tests performed under the ambient temperature ratings of the Pico Series.
2.4.3.2 Operating Conditions Voltage Characteristics
The parameters given in
Table 2-5: Operating Conditions Voltage Characteristics
are
derived from tests performed under the ambient temperature ratings of the Pico Series.
Symbol
Ratings
Min
Max
Unit
V
CC
/V
DD
External main supply voltage.
0
3.8
V
V
IN
Input voltage on any pin.
-0.3
V
DD
+0.3
Table 2-2 Voltage Characteristics
Symbol
Ratings
Max
Unit
I
VDD
Total current into Pico Series (source).
70
mA
I
VSS
Total current out of Pico Series (sink).
70
Output current sunk by any I/O and control pin.
20
I
IO
Output Current sourced by any I/O and control pin.
-8
Table 2-3 Current Characteristics
Symbol
Parameter
Min
Max
Unit
V
DD
rise time rate.
0
∞
µs/V
t
VDD
V
DD
fall time rate.
20
∞
Table 2-4 Operating Conditions at Power-up/Power-down
Symbol
Ratings
Min
Max
Unit
V
CC
External radio supply voltage.
3.3
(1)
3.6
V
V
DD
External digital supply voltage.
3.0
3.6
Table 2-5 Operating Conditions Voltage Characteristics
1.
The modem will not be able to transit at full power if V
CC
is less than 3.6VDC.
