RX230 Datasheet, PDF (39/177 Pages) Renesas Technology Corp – 54-MHz 32-bit RX MCUs, built-in FPU, 88.56 DMIPS, up to 512-KB flash memory

RX230 Group, RX231 Group
3. Address Space
Single-chip mode*¹
0000 0000h
0001 0000h
0008 0000h
0010 0000h
0010 2000h
RAM^*2
Reserved area^*3
Peripheral I/O registers
On-chip ROM (E2DataFlash)
Reserved area^*3
007F C000h
007F C500h
007F FC00h
0080 0000h
Peripheral I/O registers
Reserved area^*3
Peripheral I/O registers
Reserved area^*3
On-chip ROM enabled
extended mode
0000 0000h
0001 0000h
0008 0000h
0010 0000h
0010 2000h
RAM^*2
Reserved area^*3
Peripheral I/O registers
On-chip ROM (E2DataFlash)
Reserved area^*3
007F C000h
007F C500h
007F FC00h
0080 0000h
Peripheral I/O registers
Reserved area^*3
Peripheral I/O registers
Reserved area^*3
0500 0000h
External address space
(CS area)
0800 0000h
Reserved area^*3
On-chip ROM disabled
extended mode
0000 0000h
0001 0000h
0008 0000h
0010 0000h
RAM^*2
Reserved area^*3
Peripheral I/O registers
Reserved area^*3
0500 0000h
External address space
(CS area)
0800 0000h
Reserved area^*3
FF00 0000h
FFF8 0000h _{On-chip ROM (program ROM)}
FFFF FFFFh
(read only)*²
FFF8 0000h _{On-chip ROM (program ROM)}
FFFF FFFFh
(read only)*²
External address space
FFFF FFFFh
Note 1. The address space in boot mode and USB boot mode is the same as the address space in single-chip mode.
Note 2. The capacity of ROM/RAM differs depending on the products.
ROM (bytes)
RAM (bytes)
Capacity Address
Capacity Address
512 Kbytes FFF8 0000h to FFFF FFFFh 64 Kbytes 0000 0000h to 0000 FFFFh
384 Kbytes FFFA 0000h to FFFF FFFFh
256 Kbytes FFFC 0000h to FFFF FFFFh 32 Kbytes 0000 0000h to 0000 7FFFh
128 Kbytes FFFE 0000h to FFFF FFFFh
Note: See Table 1.3 and Table 1.4 List of Products, for the product type name.
Note 3. Reserved areas should not be accessed.
Figure 3.1
Memory Map in Each Operating Mode
R01DS0261EJ0110 Rev.1.10
Oct 30, 2015
Page 39 of 177