SH7080_09 Datasheet, PDF (84/1622 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family

Section 2 CPU
2.2 Register Configuration
There are three types of registers: general registers (32-bit × 16), control registers (32-bit × 3), and
system registers (32-bit × 4).
General register (Rn)
31
0
R0*¹
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15, SP (hardware stack pointer)0*²
Status register (SR)
31
9 87 6 5 4 3 210
M Q I3 I2 I1 I0
ST
Global base register (GBR)
31
0
GBR
Vector base register (VBR)
31
0
VBR
Multiply and accumulate register (MAC)
31
0
MACH
MACL
Procedure register (PR)
31
0
PR
Program counter (PC)
31
0
PC
Notes: 1. R0 can be used as an index register in index register indirect or index GBR
indirect addressing mode. For some instructions, only R0 is used as the
source or destination register.
2. R15 is used as a hardware stack pointer during exception handling.
Figure 2.1 CPU Internal Register Configuration
Rev. 4.00 Dec. 15, 2009 Page 24 of 1558
REJ09B0181-0400