Texas Instruments Development Kit for TM4C129x,Tiva™ ARM® Cortex™ -M4 Microcontroller DK-TM4C129X DK-TM4C129X 数据表
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DK-TM4C129X
Table 32-7. Recommended FAST GPIO Pad Operating Conditions (continued)
Unit
Max
Nom
Min
Parameter Name
Parameter
Fast GPIO High-level source current, V
OH
=2.4 V
b
I
OH
mA
-
-
2.0
2-mA Drive
mA
-
-
4.0
4-mA Drive
mA
-
-
8.0
8-mA Drive
mA
-
-
10.0
10-mA Drive
mA
-
-
12.0
12-mA Drive
Fast GPIO Low-level sink current, V
OL
=0.4 V
b
I
OL
mA
-
-
2.0
2-mA Drive
mA
-
-
4.0
4-mA Drive
mA
-
-
8.0
8-mA Drive
mA
-
-
10.0
10-mA Drive
mA
-
-
12.0
12-mA Drive
mA
-
-
18.0
12-mA Drive overdriven to 18-mA
a. Output/pull-up/pull-down disabled; only input enabled
b. I
O
specifications reflect the maximum current where the corresponding output voltage meets the V
OH
/V
OL
thresholds. I
O
current can exceed these limits (subject to absolute maximum ratings).
Table 32-8. Recommended Slow GPIO Pad Operating Conditions
Unit
Max
Nom
Min
Parameter Name
Parameter
V
4
-
0.65 * V
DD
Slow GPIO high-level input voltage
V
IH
nA
4.1
-
-
Slow GPIO high-level input current
a
I
IH
V
0.35 * V
DD
-
0
Slow GPIO low-level input voltage
V
IL
nA
-1
-
-
Slow GPIO low-level input current
a
I
IL
V
-
-
0.49
Slow GPIO Input Hysteresis
V
HYS
V
-
-
2.4
Slow GPIO High-level output voltage
V
OH
V
0.4
-
-
Slow GPIO Low-level output voltage
V
OL
High-level source current, V
OH
=2.4 V
b
I
OH
mA
-
-
2.0
2-mA Drive
Low-level sink current, V
OL
=0.4 V
b
I
OL
mA
-
-
2.0
2-mA Drive
a. Output/pull-up/pull-down disabled; only input enabled.
b. I
O
specifications reflect the maximum current where the corresponding output voltage meets the V
OH
/V
OL
thresholds. I
O
current can exceed these limits (subject to absolute maximum ratings).
32.3.2.1
GPIO Current Restrictions
Table 32-9. GPIO Current Restrictions
a
Unit
Max
Nom
Min
Parameter Name
Parameter
mA
110
-
-
Cumulative maximum GPIO current per side, left
b
I
MAXL
mA
116
-
-
Cumulative maximum GPIO current per side,
bottom
bottom
b
I
MAXB
mA
110
-
-
Cumulative maximum GPIO current per side, right
b
I
MAXR
December 13, 2013
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Texas Instruments-Advance Information
Electrical Characteristics