Flash Read Buffer Register H (Frbh); Flash Read Buffer Register L (Frbl); Flash Write Buffer Register H (Fwbh) - Renesas RX100 Series User Manual

RX13T Group
31.4.15

Flash Read Buffer Register H (FRBH)

Address(es): FLASH.FRBH 007F C0C4h
b15 b14
0 0
Value after reset:
This register is used to store the upper 2 bytes of the 4-byte data (part of the unique ID) that is read from the extra area
when unique ID read is executed.
31.4.16

Flash Read Buffer Register L (FRBL)

Address(es): FLASH.FRBL 007F C0C2h
b15 b14
0 0
Value after reset:
This register is used to store the lower 2 bytes of the 4-byte data (part of the unique ID) that is read from the extra area
when unique ID read is executed.
31.4.17

Flash Write Buffer Register H (FWBH)

Address(es): FLASH.FWBH 007F FF8Eh
b15 b14
0 0
Value after reset:
This register is used to set the upper 16 bits of the data for programming the ROM.
Data can be written to this register in ROM P/E mode or E2 DataFlash P/E mode.
This register is initialized by a reset or setting the FRESETR.FRESET bit to 1. Data cannot be written to this register
while the FRESETR.FRESET bit is 1.
The value read from this register is undefined while a software command is being executed.
The data for programming the E2 DataFlash should be specified in the lower 8 bits in the FWBL register.
If this register is read while executing a software command set by the FEXCR register, an undefined value is read.
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
b13 b12 b11 b10
0 0 0 0
b13 b12 b11 b10
0 0 0 0
b13 b12 b11 b10
0 0 0 0
b9 b8 b7 b6
0 0 0 0
b9 b8 b7 b6
0 0 0 0
b9 b8 b7 b6
0 0 0 0
31. Flash Memory (FLASH)
b5 b4 b3 b2
0 0 0 0
b5 b4 b3 b2
0 0 0 0
b5 b4 b3 b2
0 0 0 0
Page 922 of 1041
b1 b0
0 0
b1 b0
0 0
b1 b0
0 0