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Table 5-1. Clock Summary (continued)
Clock name
High Speed Run
mode
clock frequency
Run mode
clock frequency
VLPR mode
clock frequency
Clock source
Clock is disabled
when…
stop modes and
during PLL locking
when
MCGOUTCLK
derived from PLL.
MCGFLLCLK
Up to 100 MHz
Up to 100 MHz
N/A
MCG
MCG clock controls
do not enable.
Overriding forced
disable in all low
powers modes
(including STOP
and VLPx modes).
MCGPLLCLK
Up to 120 MHz
Up to 120 MHz
N/A
MCG
MCG clock controls
do not enable,
in Stop mode but
PLLSTEN=0,
or in VLPS, LLS
and VLLSx modes
Core clock
Up to 120 MHz
Up to 80 MHz
Up to 4 MHz
MCGOUTCLK
clock divider
In all wait and stop
modes
System clock
Up to 120 MHz
Up to 80 MHz
Up to 4 MHz
MCGOUTCLK
clock divider
In all stop modes
and Compute
Operation
Bus clock
Up to 60 MHz
Up to 50 MHz
Up to 4 MHz
MCGOUTCLK
clock divider
In all stop modes
except for partial
STOP2 mode, and
Compute Operation
FlexBus clock
(FB_CLK)
Up to 30 MHz
Up to 30 MHz
Up to 4 MHz
MCGOUTCLK
clock divider
In all stop modes or
FlexBus disabled
Flash clock
Up to 26.67 MHz
Up to 26.67 MHz
Up to 1 MHz in
BLPE, Up to 800
kHz in BLPI
MCGOUTCLK
clock divider
In all stop modes
except for partial
STOP2 mode
Internal reference
(MCGIRCLK)
30-40 kHz or 4
MHz
30-40 kHz or 4
MHz
4 MHz only
MCG
MCG_C1[IRCLKEN
] cleared,
Stop or VLPS
mode and
MCG_C1[IREFSTE
N] cleared, or
LLS/VLLS mode
External reference
(OSCERCLK)
Up to 50 MHz
(bypass),
30-40 kHz, or
3-32 MHz (crystal)
Up to 50 MHz
(bypass),
30-40 kHz, or
3-32 MHz (crystal)
Up to 16 MHz
(bypass),
30-40 kHz (low-
range crystal) or
Up to 16 MHz
(high-range crystal)
System OSC
System OSC's
OSC_CR[ERCLKE
N] cleared, or
Stop mode and
OSC_CR[EREFST
EN] cleared
Table continues on the next page...
Clock definitions
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
154
NXP Semiconductors
Summary of Contents for K22F series
Page 2: ...K22F Sub Family Reference Manual Rev 4 08 2016 2 NXP Semiconductors...
Page 168: ...Module clocks K22F Sub Family Reference Manual Rev 4 08 2016 168 NXP Semiconductors...
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