Chapter 21
Reset and Boot
21.1 Introduction
The following reset sources are supported in this MCU:
Table 21-1. Reset sources
Reset sources
Description
POR reset
•
System resets
•
•
•
Software watchdog reset (WDOG)
•
Clock generator loss of clock (LOC) reset
•
Clock generator loss of lock (LOL) reset
•
Stop mode acknowledge error (SACKERR)
•
•
•
Debug reset
•
Each of the reset sources has an associated bit in the system reset status (RCM_SRS)
register. Besides immediate reset, the RCM module also supports optional delays of the
system resets for a period of time with an interrupt generated. This provides software an
option to perform a graceful shutdown. See the
chapter for
register details.
The MCU exits reset in functional mode where the CPU is executing code. See
The following figure shows a block diagram of the reset sources for this device.
Kinetis KE1xZ256 Sub-Family Reference Manual, Rev. 3, 07/2018
NXP Semiconductors
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