LM3S1958 Datasheet, PDF (412/435 Pages) List of Unclassifed Manufacturers – Microcontroller

Electrical Characteristics
Figure 19-8. JTAG Test Access Port (TAP) Timing
TCK
TMS
TDI
TDO
J7
J8
J7
J8
TMS Input Valid
TMS Input Valid
J9
J10
J9
J10
TDI Input Valid
TDI Input Valid
J11
J12
J13
TDO Output Valid
TDO Output Valid
Figure 19-9. JTAG TRST Timing
TCK
TRST
J14
J15
19.2.9
General-Purpose I/O
Note: All GPIOs are 5 V-tolerant.
Table 19-14. GPIO Characteristics
Parameter Parameter Name
Condition
Min Nom Max Unit
t_GPIOR GPIO Rise Time (from 20% to 80% of V_DD)
2-mA drive
4-mA drive
- 17 26 ns
9 13 ns
8-mA drive
6 9 ns
8-mA drive with slew rate control
10 12 ns
t_GPIOF GPIO Fall Time (from 80% to 20% of V_DD)
2-mA drive
4-mA drive
- 17 25 ns
8 12 ns
8-mA drive
6 10 ns
8-mA drive with slew rate control
11 13 ns
19.2.10 Reset
Table 19-15. Reset Characteristics
Parameter No. Parameter Parameter Name
R1
V_TH Reset threshold
Min Nom Max Unit
- 2.0 - V
412
June 14, 2007
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