Stable
Off
OSCCLK
CNT_DONE_4096
Start-Up
OSCCLK requested
External Clock Mode
Oscillator ON, Stable
Oscillator OFF
Oscillator ON, not yet stable
Oscillator ON
OSC_CLK_OUT = Static
OSC_CLK_OUT = Static
OSC_CLK_OUT = EXTAL
OSC_CLK_OUT = XTL_CLK
not requested
&&
Select OSC internal clock
OSCCLK requested
&&
Select clock from EXTAL signal
Figure 21-6. OSC Module state diagram
NOTE
XTL_CLK is the clock generated internally from OSC circuits.
21.8.1.1 Off
The OSC enters the Off state when the system does not require OSC clocks. Upon
entering this state, XTL_CLK is static unless OSC is configured to select the clock from
the EXTAL pad by clearing the external reference clock selection bit. For details
regarding the external reference clock source in this MCU, refer to the chip configuration
details. The EXTAL and XTAL pins are also decoupled from all other oscillator circuitry
in this state. The OSC module circuitry is configured to draw minimal current.
Chapter 21 Oscillator (OSC)
MKW01Z128 MCU Reference Manual, Rev. 3, 04/2016
Freescale Semiconductor, Inc.
377
Summary of Contents for MKW01Z128
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Page 233: ...Module clocks MKW01Z128 MCU Reference Manual Rev 3 04 2016 102 Freescale Semiconductor Inc...
Page 513: ...Interrupts MKW01Z128 MCU Reference Manual Rev 3 04 2016 382 Freescale Semiconductor Inc...
Page 633: ...CMP Trigger Mode MKW01Z128 MCU Reference Manual Rev 3 04 2016 502 Freescale Semiconductor Inc...