LM3S1651 Datasheet, PDF (972/1033 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Electrical Characteristics
23.3
Table 23-2. Recommended DC Operating Conditions (continued)
Parameter Parameter Name
Min
Nom
Max
Unit
V_OH
High-level output voltage
2.4
V_OL
Low-level output voltage
-
High-level source current, V_OH=2.4 V^a
2-mA Drive
-2.0
I_OH
4-mA Drive
-4.0
-
-
V
-
0.4
V
-
-
mA
-
-
mA
8-mA Drive
-8.0
-
-
mA
Low-level sink current, V_OL=0.4 V^a
2-mA Drive
2.0
-
-
mA
I_OL
4-mA Drive
4.0
-
-
mA
8-mA Drive
8.0
-
-
mA
8-mA Drive, V_OL=1.2 V
18.0
-
-
mA
a. 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).
Load Conditions
Unless otherwise specified, the following conditions are true for all timing measurements.
Figure 23-1. Load Conditions
pin
C_L = 50 pF
23.4
GND
JTAG and Boundary Scan
Table 23-3. JTAG Characteristics
Parameter
No.
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
Parameter
F_TCK
T_TCK
T_{TCK_LOW}
T_{TCK_HIGH}
T_{TCK_R}
T_{TCK_F}
T_{TMS_SU}
T_{TMS_HLD}
T_{TDI_SU}
T_{TDI_HLD}
Parameter Name
TCK operational clock frequency^a
TCK operational clock period
TCK clock Low time
TCK clock High time
TCK rise time
TCK fall time
TMS setup time to TCK rise
TMS hold time from TCK rise
TDI setup time to TCK rise
TDI hold time from TCK rise
Min Nom
0
-
100
-
-
t_TCK/2
-
t_TCK/2
0
-
0
-
20
-
20
-
25
-
25
-
Max
10
-
-
-
10
10
-
-
-
-
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
972
January 21, 2012
Texas Instruments-Production Data