SH7670 Datasheet, PDF (80/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 2 CPU
The table below shows the format of instruction codes, operation, and execution states. They are
described by using this format according to their classification.
Instruction
Instruction Code Operation
Execution
States
T Bit
Indicated by mnemonic.
Indicated in MSB ↔
LSB order.
Indicates summary of
operation.
Value when no
wait states are
inserted.^*1
Value of T bit after
instruction is
executed.
[Legend]
Rm: Source register
[Legend]
mmmm: Source register
[Legend]
→, ←: Transfer direction
Explanation of
Symbols
—: No change
Rn: Destination register
imm: Immediate data
disp: Displacement*²
nnnn: Destination register
0000: R0
0001: R1
.........
1111: R15
iiii: Immediate data
dddd: Displacement
(xx): Memory operand
M/Q/T: Flag bits in SR
&: Logical AND of each bit
|: Logical OR of each bit
^: Exclusive logical OR of
each bit
~: Logical NOT of each bit
<<n: n-bit left shift
>>n: n-bit right shift
Notes: 1. Instruction execution cycles: The execution cycles shown in the table are minimums. In
practice, the number of instruction execution states will be increased in cases such as
the following:
a. When there is a conflict between an instruction fetch and a data access
b. When the destination register of a load instruction (memory → register) is the same
as the register used by the next instruction.
2. Depending on the operand size, displacement is scaled by ×1, ×2, or ×4. For details,
refer to the SH-2A, SH2A-FPU Software Manual.
Rev. 1.00 Nov. 14, 2007 Page 54 of 1262
REJ09B0437-0100