1009
SAM4CP [DATASHEET]
43051E–ATPL–08/14
45.3
Electrical Parameters Usage
The tables that follow further on in
Section 45.4 “I/O Characteristics”
,
Section 45.5 “Embedded Analog Peripherals
Characteristics”
,
Section 45.6 “Embedded Flash Characteristics”
and
Section 45.7 “Power Supply Current Consumption”
define the limiting values for several electrical parameters. Unless otherwise noted, these values are valid over the
ambient temperature range T
A
= [-40°C + 85°C]. Note that these limits may be affected by the board on which the MCU is
mounted. Particularly, noisy supply and ground conditions must be avoided and care must be taken to provide:
a PCB with a low impedance ground plane (unbroken ground planes are strongly recommended).
low impedance decoupling of the MCU power supply inputs. A 100nF Ceramic X7R (or X5R) capacitor placed very
close to each power supply input is a minimum requirement. See special recommendations regarding integrated
analog functions like voltage reference or voltage regulators in corresponding sections.
low impedance power supply decoupling of external components. This recommendation aims at avoiding current
spikes travelling into the PCB ground plane.
45.4
I/O Characteristics
45.4.1 I/O DC Characteristics
The following characteristics are applicable to the operating temperature range: T
A
= -40°C to 85°C, unless otherwise
specified.
Table 45-4.
Recommended Thermal Operating Conditions
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
T
A
Ambient temperature range
-40
—
85
°C
T
J
Junction temperature range
-40
—
100
R
JA
Junction-to-Ambient thermal resistance
LQFP 176 package
—
38
—
°C / W
P
D
Power dissipation
T
A
= 70 oC
T
A
= 85 oC
—
—
789
394
mW
Table 45-5.
I/O DC Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
V
IL
Low-level input voltage
3.0V < VDDIO < 3.6V
—
—
0.3 x VDDIO
V
V
IH
High-level input voltage
3.0V < VDDIO < 3.6V
0.7 x VDDIO
—
—
V
V
OH
High-level output voltage
3.0V < VDDIO < 3.6V
I
OH
~ 0
I
OH
> 0 (See I
OH
details below)
VDDIO
VDDIO - 0.4
—
—
V
V
OL
Low-level output voltage
3.0V < VDDIO < 3.6V
I
OL
~ 0
I
OL
> 0 (See I
OL
details below)
—
—
0
0.4
V