Serial Asynchronous Flash Programming
Chapter 1 Background Information
MCU-AN-300012-E-V13
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© Fujitsu Microelectronics Europe GmbH
Figure 4: Flow chart of Boot ROM
The internal bootloader provides some basic functions for reading and writing the internal
RAM, function calling or changing the communication speed. These functions are normally
used to write a programming kernel to the internal RAM of the microcontroller which handles
the programming of the flash memory.
*1) Boot Security Vector points to address in Flash-ROM
*2) Magic Number = 0x0A897A?
*3) Start user application at address given by Boot Security Vector 1/2
*4) Start user application at default user program entry address
*5) Timeout about 100 ms
