Transition From Read Mode To P/E Mode - Renesas RX100 Series User Manual

RX13T Group
31.7.2.2

Transition from Read Mode to P/E Mode

Switching to ROM P/E mode is required before executing a software command for the ROM.
Figure 31.7 shows the Procedure for Transition from ROM/E2 DataFlash Read Mode to ROM P/E Mode. Figure 31.8
shows the Procedure for Transition from ROM/E2 DataFlash Read Mode to E2 DataFlash P/E Mode.
Start in ROM/E2 DataFlash
read mode
FENTRYR register = AA01h
Set 12h in
the FPMCR register
Wait for t
DIS
OPCCR.OPCM[2:0] bits =
000b?
Yes
Set 92h in the FPMCR register
Set 82h in the FPMCR register
Wait for t
MS
Set the FCLK frequency in
the FISR.PCKA[4:0] bits
End in ROM P/E mode
Note 1. t
DIS
t
MS
Figure 31.7 Procedure for Transition from ROM/E2 DataFlash Read Mode to ROM P/E Mode
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
Set ROM P/E mode
FPR register = A5h
FPMCR register = 12h
FPMCR register = EDh
FPMCR register = 12h
*1
No
High-speed operating mode
FPR register = A5h
FPMCR register = 92h
FPMCR register = 6Dh
FPMCR register = 92h
FPR register = A5h
FPMCR register = 82h
FPMCR register = 7Dh
FPMCR register = 82h
*1
: ROM mode transition wait time 1 (Refer to the Electrical Characteristics chapter.)
: ROM mode transition wait time 2 (Refer to the Electrical Characteristics chapter.)
31. Flash Memory (FLASH)
Middle-speed operating mode
FPR register = A5h
Set D2h in
FPMCR register = D2h
the FPMCR register
FPMCR register = 2Dh
FPMCR register = D2h
FPR register = A5h
Set C2h in
FPMCR register = C2h
the FPMCR register
FPMCR register = 3Dh
FPMCR register = C2h
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