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

RX13T Group
31.7.2.3

Transition from P/E Mode to Read Mode

High-speed reading of the ROM requires switching to ROM/E2 DataFlash read mode.
Figure 31.9 shows the Procedure for Transition from ROM P/E Mode to ROM/E2 DataFlash Read Mode. Figure 31.10
shows the Procedure for Transition from E2 DataFlash P/E Mode to ROM/E2 DataFlash Read Mode.
Note 1. t
Figure 31.9 Procedure for Transition from ROM P/E Mode to ROM/E2 DataFlash Read Mode
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
Start in ROM P/E mode
Set 92h in
the FPMCR register
*1
Wait for t
DIS
Set 12h in
the FPMCR register
Set 08h in
the FPMCR register
*1
Wait for t
MS
FENTRYR register = AA00h
FENTRYR register = 0000h?
Yes
End in ROM/E2 DataFlash
read mode
: ROM mode transition wait time 1 (Refer to the Electrical Characteristics chapter.)
DIS
t : ROM mode transition wait time 2 (Refer to the Electrical Characteristics chapter.)
MS
FPR register = A5h
FPMCR register = 92h
FPMCR register = 6Dh
FPMCR register = 92h
FPR register = A5h
FPMCR register = 12h
FPMCR register = EDh
FPMCR register = 12h
FPR register = A5h
FPMCR register = 08h
FPMCR register = F7h
FPMCR register = 08h
No
31. Flash Memory (FLASH)
Page 936 of 1041