R5S72611 RENESAS [Renesas Technology Corp], R5S72611 Datasheet - Page 62

• Manufacturer Part Number: R5S72611
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 2 CPU
2.3
2.3.1
Instructions are RISC type. This section details their functions.
(1)
Basic instructions have a fixed length of 16 bits, improving program code efficiency.
(2)
The SH-2A additionally features 32-bit fixed-length instructions, improving performance and ease
of use.
(3)
Each basic instruction can be executed in one cycle using the pipeline system.
(4)
Longword is the standard data length for all operations. Memory can be accessed in bytes, words,
or longwords. Byte or word data in memory is sign-extended and handled as longword data.
Immediate data is sign-extended for arithmetic operations or zero-extended for logic operations. It
is also handled as longword data.
Table 2.2
Note: @(disp, PC) accesses the immediate data.
Rev. 2.00 Sep. 07, 2007 Page 30 of 1312
REJ09B0320-0200
SH-2A CPU
MOV.W
ADD
.DATA.W
16-Bit Fixed-Length Instructions
32-Bit Fixed-Length Instructions
One Instruction per State
Data Length
Instruction Features
RISC-Type Instruction Set
@(disp,PC),R1
R1,R0
.........
H'1234
Sign Extension of Word Data
Description
Data is sign-extended to 32
bits, and R1 becomes
H'00001234. It is next
operated upon by an ADD
instruction.
Example of Other CPU
ADD.W
#H'1234,R0