LM3S617 Datasheet, PDF (369/379 Pages) List of Unclassifed Manufacturers – Microcontroller

19.2.7 General-Purpose I/O
Table 19-13. GPIO Characteristics^a
Parameter Parameter Name
t_GPIOR
GPO Rise Time
(from 20% to 80%
of V_DD)
t_GPIOF
GPO Fall Time
(from 80% to 20%
of V_DD)
a. All GPIOs are 5 V-tolerant.
Condition
2-mA drive
4-mA drive
8-mA drive
8-mA drive with slew rate control
2-mA drive
4-mA drive
8-mA drive
8-mA drive with slew rate control
19.2.8 Reset
LM3S617 Data Sheet
Min
Nom
Max
Unit
-
17
26
ns
9
13
ns
6
9
ns
10
12
ns
-
17
25
ns
8
12
ns
6
10
ns
11
13
ns
Table 19-14. Reset Characteristics
Parameter
No.
R1
R2
R3
R4
R5
R6
R7
Parameter
V_TH
V_BTH
T_POR
T_BOR
T_IRPOR
T_IRBOR
T_IRHWR
R8
T_IRSWR
R9
T_IRWDR
R10
T_IRLDOR
R11
T_VDDRISE
a. 20 * t_{MOSC_PER}
Parameter Name
Reset threshold
Brown-Out threshold
Power-On Reset timeout
Brown-Out timeout
Internal reset timeout after POR
Internal reset timeout after BOR^a
Internal reset timeout after hardware
reset (RST pin)
Internal reset timeout after
software-initiated system reset^a
Internal reset timeout after watchdog
reset^a
Internal reset timeout after LDO reset^a
Supply voltage (V_DD) rise time (0V-3.3V)
Min
-
2.85
-
-
15
2.5
15
2.5
2.5
2.5
Nom
2.0
2.9
10
500
-
-
-
-
-
-
Max
-
2.95
-
-
30
20
30
20
20
20
100
Unit
V
V
ms
µs
ms
µs
ms
µs
µs
µs
ms
May 4, 2007
369
Preliminary