RX71M_15 Datasheet, PDF (66/228 Pages) Renesas Technology Corp – Renesas MCUs

RX71M Group
2. CPU
Figure 2.1 shows register set of the CPU.
2. CPU
General-purpose register
b31
R0 (SP)^*1
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
DSP instruction register
b71
Control register
b0 b31
b0
ISP (Interrupt stack pointer)
USP (User stack pointer)
INTB (Interrupt table register)
PC (Program counter)
PSW (Processor status word)
BPC (Backup PC)
BPSW (Backup PSW)
FINTV (Fast interrupt vector register)
FPSW (Floating-point status word)
EXTB (Exception table register)
b0
ACC0 (Accumulator 0)
ACC1 (Accumulator 1)
Note 1. The stack pointer (SP) can be the interrupt stack pointer (ISP) or user stack pointer (USP), according to
the value of the U bit in the PSW.
Figure 2.1
Register Set of the CPU
R01DS0249EJ0100 Rev.1.00
Jan 15, 2015
Page 66 of 228