RL78/F13, F14 CHAPTER 3 CPU ARCHITECTURE
R01UH0368EJ0210 Rev.2.10 121
Dec 10, 2015
3.1.4 Special function register (SFR) area
On-chip peripheral hardware special function registers (SFRs) are allocated in the area FFF00H to FFFFFH (see Table
3-5 SFR List in 3.2.4 Special function registers (SFRs)).
Caution Do not access addresses to which SFRs are not assigned.
3.1.5 Extended special function register (2nd SFR: 2nd Special Function Register) area
On-chip peripheral hardware special function registers (2nd SFRs) are allocated in the area F0000H to F07FFH (see
Table 3-6 Extended SFR (2nd SFR) List in 3.2.5 Extended special function registers (2nd SFRs: 2nd Special Function
Registers)).
SFRs other than those in the SFR area (FFF00H to FFFFFH) are allocated to this area. An instruction that accesses the
extended SFR area, however, is 1 byte longer than an instruction that accesses the SFR area.
Caution Do not access addresses to which extended SFRs are not assigned.
To Next Page
Loading...
