K60P100M100SF2RM Datasheet, PDF (199/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

• DWT
• ITM
• NVIC
• Crossbar bus switch¹
• AHB-AP¹
• Private peripheral bus¹
Chapter 6 Reset and Boot
6.3 Boot
This section describes the boot sequence, including sources and options.
6.3.1 Boot sources
This device only supports booting from internal flash. Any secondary boot must go
through an initialization sequence in flash.
6.3.2 Boot options
The device's functional mode is controlled by the state of the EzPort chip select
(EZP_CS) pin during reset.
The device can be in single chip (default) or serial flash programming mode (EzPort).
While in single chip mode the device can be in run or various low power modes
mentioned in Power mode transitions.
Table 6-2. Mode select decoding
EzPort chip select (EZP_CS)
0
1
Description
Serial flash programming mode (EzPort)
Single chip (default)
6.3.3 FOPT boot options
The flash option register (FOPT) in flash memory module (FTFL) allows the user to
customize the operation of the MCU at boot time. The register contains read-only bits
that are loaded from the NVM's option byte in the flash configuration field. The user can
1. CDBGRSTREQ does not affect AHB resources so that debug resources on the private peripheral bus are available
during System Reset.
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.
199