Chapter 18
ReRAM
Self-programming Rewriting Method XVIII - 5
18.2.1 Procedures for Rewriting
Figure:18.2.2 shows the ReRAM programming flow.
Figure:18.2.2 ReRAM programming flow
..
To access a command library, FBEWER needs to be set to "0x4B".
If not, NMI as execution of the undefined instruction is generated.
..
..
When programming ReRAM, the voltage of VDD18 must be set to 1.8 V with the PWCTR0.
..
18.2.2 Interrupts during Programming
When an interrupt occurs during the execution of a command library, the processing of the command library is
suspended and the interrupt process is executed. After the interrupt process is finished, the command library is
resumed.
Start Rewriting
End Rewriting
Call
Return
Command Library
Start
Command Library
End
ReRAM
Programming
2.Set the necessary parameters
in the control registers(*1).
1.Set the FBEWER to "0x4B"
3.Subroutine-call Software
Library. (*2)
4.Set the FBEWER to any value
other than "0x4B"
*1 Rerer to Table 18.3.1.
*2 The reteruned value of the command librar
is stored in D0.
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