Download Flash Self-Programming Library Type01 User`s Manual

RL78 Family
CHAPTER 6
FLASH FUNCTION
Flash Self-Programming Library Type 01
6. 5 Pausing of Flash Self-Programming
When you need to pause the sequencer control during block erasure while the flash function is being executed
in the status check user mode, the stand-by function (FSL_StandBy) can be used to pause the erasure processing
to put flash self-programming to the pause state. When the stand-by function is executed in a state other than
during block erasure, it waits until the previous processing is completed, and makes a transition to the pause state
after the completion.
When a transition to the pause state occurs, the code flash memory cannot be controlled. To return from the
pause state, the wakeup function (FSL_WakeUp) needs to be executed.
If the block erasure is suspended, the
pause state is released to restart the block erasure. In other cases, only the pause state is released.
Figure 6－4
Example of Pausing of Flash Self-Programming
Example 1: Pause processing during erasure processing
User
Start of
processing
Example 2: Pause processing during writing (other than erasure) processing
User
Library
Erasure executed
Start of
processing
Function closed
Function closed
Pause instruction
Erasure
processing
* ROM cannot
be referred to
Pause state
Restart instruction
Pause released
Status check
End of
processing
R01US0050EJ0103
Dec 22, 2014
Library
Writing executed
Pause state
* ROM can be
referred to
Pause instruction
A transition to the pause
state occurs after waiting
for the completion of
processing.
* A transition to the
pause state occurs
immediately if no waiting
is required.
Erasure
processing
restarted
* ROM cannot
be referred
Pause state
Restart instruction
End of
processing
Writing
processing
* ROM cannot
be referred to
Pause state
* ROM can be
referred to
Pause released
Status check
Rev.1.03
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