LM3S5R31 Datasheet, PDF (1205/1275 Pages) Texas Instruments – Stellaris® LM3S5R31 Microcontroller

Stellaris^® LM3S5R31 Microcontroller
26.10
Table 26-17. Sleep Modes AC Characteristics (continued)
Parameter
No
D3
Parameter
Parameter Name
T_{ENTER_DS}
Time to enter deep-sleep mode from sleep
request
Min Nom
-
0
Max
35^c
Unit
ms
a. Values in this table assume the IOSC is the clock source during sleep or deep-sleep mode.
b. Specified from registering the interrupt to first instruction.
c. Nominal specification occurs 99.9995% of the time.
Hibernation Module
The Hibernation module requires special system implementation considerations because it is intended
to power down all other sections of its host device, refer to “Hibernation Module” on page 301.
Table 26-18. Hibernation Module Battery Characteristics
Parameter
V_BAT
V_LOWBAT
Parameter Name
Battery supply voltage
Low battery detect voltage
Min
Nominal
Max
Unit
2.4
3.0
3.6
V
1.8
-
2.2
V
Table 26-19. Hibernation Module AC Characteristics
Parameter
No
Parameter
Parameter Name
Min Nom Max
H1
T_{HIB_LOW}
Internal 32.768 KHz clock reference rising edge to 20
-
-
HIB asserted
H2
T_{HIB_HIGH}
Internal 32.768 KHz clock reference rising edge to
-
30
-
HIB deasserted
H3
T_{WAKE_TO_HIB} WAKE assert to HIB desassert (wake up time),
internal Hibernation oscillator running during
hibernation^a
62
-
124
H4
T_{WAKE_TO_HIB} WAKE assert to HIB desassert (wake up time),
internal Hibernation oscillator stopped during
hibernation^a
-
-
10
H5
T_{WAKE_CLOCK} WAKE assertion time, internal Hibernation oscillator 62
-
-
running during hibernation
H6
T_{WAKE_NOCLOCK}
WAKE assertion time, internal Hibernation oscillator
stopped during hibernation^b
10
-
-
H7
T_{HIB_REG_ACCESS} Time required for a write to a non-volatile register in 92
-
-
the HIB module to complete
H8
T_{HIB_TO_HIB} HIB high time between assertions
100
-
-
H9
T_{ENTER_HIB} Time to enter Hibernate mode from hibernation
-
0
35^c
request
a. Code begins executing after the time period specified by T_IRPOR following the deassertion of HIB.
b. This mode is used when the PINWEN bit is set and the RTCEN bit is clear in the HIBCTL register.
c. Nominal specification occurs 99.998% of the time.
Unit
μs
μs
μs
ms
μs
ms
μs
ms
ms
January 20, 2012
Texas Instruments-Production Data
1205