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SLAS826F – MARCH 2015 – REVISED MARCH 2017
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Specifications
Copyright © 2015–2017, Texas Instruments Incorporated
lists the latencies required to change between different active modes and LPM3 or LPM4
modes.
(1)
This is the latency from WFI instruction execution by CPU to LPM3 or LPM4 entry.
(2)
This is the latency from I/O wake-up event to MCLK clock start at device pin.
Table 5-5. LPM3, LPM4 Mode Transition Latencies
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
ORIGINAL
OPERATING MODE
FINAL OPERATING
MODE
TEST CONDITIONS
TYP
MAX
UNIT
t
AMLDO0_LPMx0
(1)
AM_LDO_VCORE0
LPM3_LPM4_VCORE0
Transition from
AM_LDO_VCORE0 to
LPM3 or LPM4 at VCORE0
SELM = 3.
DCO frequency =
24 MHz
22
24
µs
t
LPMx0_AMLDO0_NORIO
(2)
LPM3_LPM4_VCORE0
AM_LDO_VCORE0
Transition from LPM3 or
LPM4 at VCORE0 to
AM_LDO_VCORE0 through
wake-up event from
nonglitch filter type I/O
SELM = 3.
DCO frequency =
24 MHz
8
9
µs
t
LPMx0_AMLDO0_GFLTIO
(2)
LPM3_LPM4_VCORE0
AM_LDO_VCORE0
Transition from LPM3 or
LPM4 at VCORE0 to
AM_LDO_VCORE0 through
wake-up event from glitch
filter type I/O, GLTFLT_EN
= 1
SELM = 3.
DCO frequency =
24 MHz
9
10
µs
t
AMLDO1_LPMx1
(1)
AM_LDO_VCORE1
LPM3_LPM4_VCORE1
Transition from
AM_LDO_VCORE1 to
LPM3 or LPM4 at VCORE1
SELM = 3.
DCO frequency =
48 MHz
21
23
µs
t
LPMx1_AMLDO1_NORIO
(2)
LPM3_LPM4_VCORE1
AM_LDO_VCORE1
Transition from LPM3 or
LPM4 at VCORE1 to
AM_LDO_VCORE1 through
wake-up event from
nonglitch filter type I/O
SELM = 3.
DCO frequency =
48 MHz
7.5
8
µs
t
LPMx1_AMLDO1_GFLTIO
(2)
LPM3_LPM4_VCORE1
AM_LDO_VCORE1
Transition from LPM3 or
LPM4 at VCORE1 to
AM_LDO_VCORE1 through
wake-up event from glitch
filter type I/O, GLTFLT_EN
= 1
SELM = 3.
DCO frequency =
48 MHz
8
9
µs
t
AMLFx_LPMx_128k
(1)
AM_LF_VCOREx
LPM3_LPM4_VCOREx
Transition from
AM_LF_VCORE0 or
AM_LF_VCORE1 to LPM3
or LPM4 at VCORE0/1
SELM = 2. REFO
frequency = 128
kHz
240
260
µs
t
AMLFx_LPMx_32k
(1)
AM_LF_VCOREx
LPM3_LPM4_VCOREx
Transition from
AM_LF_VCORE0 or
AM_LF_VCORE1 to LPM3
or LPM4 at VCORE0/1
SELM = 0. LFXT
frequency =
32.768 kHz
880
900
µs
t
LPMx_AMLFx_NORIO_128k
(2)
LPM3_LPM4_VCOREx
AM_LF_VCOREx
Transition from LPM3 or
LPM4 at VCORE0/1 to
AM_LF_VCORE0 or
AM_LF_VCORE1 through
wake-up event from
nonglitch filter type I/O
SELM = 2. REFO
frequency = 128
kHz
45
50
µs
t
LPMx_AMLFx_NORIO_32k
(2)
LPM3_LPM4_VCOREx
AM_LF_VCOREx
Transition from LPM3 or
LPM4 at VCORE0/1 to
AM_LF_VCORE0 or
AM_LF_VCORE1 through
wake-up event from
nonglitch filter type I/O
SELM = 0. LFXT
frequency =
32.768 kHz
150
170
µs