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MC1322x flash loader utility (second stage loader)

Posted: 11 Aug 2009     Print Version  Bookmark and Share

Keywords:MC1322x flash  serial flash  tool flash loader 

The Freescale MC1322x for the 2.4GHz IEEE 802.15.4 Standard is a 32bit ARM7 core based device with an onboard 128Kbyte flash memory. At system boot, the binary program code for the ARM7 core gets transferred from the serial flash to the MCU SRAM (96Kbytes total available), and then application execution transfers to the SRAM and runs from there. The target application image that resides in the flash is typically loaded before board assembly or loaded as part of the manufacturing process. Also, once in the field, it may be necessary to load a new image into the onboard flash.

A flash image can either be loaded via the standard ARM7 JTAG-based debug tools or via the MC1322x boot process. Use of the debug/development tools is addressed elsewhere.

This application note describes how to load a new executable binary image into the onboard serial MC1322x flash using the boot process. It also describes the tools used for that process.

View the PDF document for more information.

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