HD6417034B RENESAS [Renesas Technology Corp], HD6417034B Datasheet - Page 43

• Manufacturer Part Number: HD6417034B
• Description: 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

2.1
The register set consists of sixteen 32-bit general registers, three 32-bit control registers, and four
32-bit system registers.
2.1.1
General registers Rn consist of sixteen 32-bit registers (R0–R15). General registers are used for
data processing and address calculation. Register R0 also functions as an index register. For some
instructions, the R0 register must be used. Register R15 functions as a stack pointer to save or
restore status registers (SR) and the program counter (PC) during exception handling.
General Registers (Rn)
Register Configuration
31
R15, SP (hardware stack pointer)
R10
R11
R12
R13
R14
R0
R1
R2
R3
R4
R5
R6
R7
R8
R9
Figure 2.1 General Registers (Rn)
Section 2 CPU
0
R0 functions as an index register
in the indexed register addressing
mode and indirect indexed GBR
addressing mode. In some instruc-
tions, R0 functions as a source
register or a destination register.
R15 functions as a stack pointer (SP)
during exception handling.
Rev. 7.00 Jan 31, 2006 page 17 of 658
REJ09B0272-0700
Section 2 CPU