How To Reprogramming Using Dual Mode; Example Of Flash Memory Reprogramming Procedure; Step-1; Figure 6.25 Reprogramming Using Dual Mode (1) - Toshiba TXZ Reference Manual

How to Reprogramming using Dual Mode

The dual mode executes flash reprogramming using the flash memory reprogramming routine located in specified
block on the users' set.
For example, while a program is executing on FLASH I/F 0, another area (such as Area 4 of FLASH I/F 2: data
flash) of the flash memory, on which instructions are not executed, can be programmed/erased. (The opposite case
is also possible.) Programming/erasing of the flash memory cannot be executed on the same FLASH I/F of the flash
memory. Use different areas for programming/erasing of the flash memory.
When you use an exception in a dual mode, please mind not to perform accidentally the area which performs
programming/erasing of a flash memory.

6.7.1. Example of Flash Memory Reprogramming Procedure

6.7.1.1. Step-1

A user determines the conditions (e.g., pin status) to enter the on-board programming and the target FLASH I/F in
Flash memory to be programmed or erased. Then suitable circuit design and program are created along to the users'
conditions.
(a) Mode determination routine: A program to determine to switch to user boot mode
(b) Programming routine:
2018-06-05
A program to download new program from the host controller and
reprogram Flash memory.
( FLASH I/F 0 )
( FLASH I/F 1 )

Figure 6.25 Reprogramming using Dual Mode (1)

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TXZ Family
Flash Memory
Rev. 2.0