Header Valid Marker
Image Size
JTAG Image Marker
1022 KB User
Application Image
Reserved
2 KB
header
0x0100_0000
0x0100_0800
0x0110_0000
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Flash User Application and Memory Partition
779
SWRU543–January 2019
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Copyright © 2019, Texas Instruments Incorporated
On-Chip Parallel Flash
The auto-generated header should not be altered by the user application, because the bootloader detects
an alteration as a security alert. This header holds the following image attributes:
• Header Valid Marker: This 32-bit pattern marks the validity of the header and the image.
• Image Size: This 32-bit field holds the size of the following image in bytes.
• JTAG Image Marker: This 32-bit pattern marks the following image as debug image and indicates to
the bootloader to skip the image update and validity checks on subsequent microcontroller resets.
Figure 21-11 shows the organization of the 1024KB of flash memory region.
Figure 21-11. Flash Memory Partition
NOTE: The effective maximum size of the user application is limited to 1022KB, and linked to run
from 0x0100_0800.
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