Unique Id Read - Renesas RX100 Series User Manual

RX13T Group
31.7.4.5

Unique ID Read

Figure 31.18 shows the procedure to issue the unique ID read command.
Yes
Figure 31.18 Procedure to Issue the Unique ID Read Command
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
Start in ROM P/E mode
FASR.EXS bit = 1
FSARH register = 00h
FSARL register = 0850h
FEARH register = 00h
FEARL register = 086Fh
FCR register = 85h
FSTATR0.ILGLERR flag = 1 or
FSTATR1.DRRDY flag = 1?
Yes
FSTATR0.ILGLERR flag = 1?
No
Read registers FRBH and FRBL
FCR register = 95h
FSTATR1.DRRDY flag = 0?
Yes
FCR register = 85h
FSTATR1.DRRDY flag = 1 or
FSTATR1.FRDY flag = 1?
Yes
FSTATR1.DRRDY flag = 1?
No
FCR register = 00h
FSTATR1.FRDY flag = 0?
Yes
End in ROM P/E mode
Issue the unique ID read command.
Wait until an illegal command error
No
occurs or the state becomes ready for
data read.
End if an illegal command error occurs.
Yes
Read 4 bytes of unique ID.
FCR.DRC bit = 1
No
Wait until the DRRDY flag becomes 0.
FCR.DRC bit = 0
Wait until the state becomes ready for
No
data read or the unique ID read
processing is completed.
If the state is ready for data read, the
processing continues.
Processing to end the command
No
31. Flash Memory (FLASH)
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