r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 160

Manufacturer Part Number

r5s77631ay266bgv

Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series

Manufacturer

Renesas Electronics Corporation.

Section 4 Pipelining

Instruction execution cycles are summarized in table 4.4. Instruction Group in the table 4.4

corresponds to the category in the table 4.2. Penalty cycles due to a pipeline stall are not

considered in the issue rates and execution cycles in this section.

1. Issue Rate

Rev. 1.00 Oct. 01, 2007 Page 94 of 1956

REJ09B0256-0100

2. Execution Cycles

E.g. MAC.W instruction

FPU instruction

E.g. FMUL instruction

E.g. FDIV instruction

Execution cycles indicates the cycle counts an instruction occupied the pipeline based on the next rules.

CPU instruction

E.g. AND.B instruction

Issue rates indicates the issue period between one instruction and next instruction.

E.g. AND.B instruction

E.g. MAC.W instruction

Issue Rates and Execution Cycles

Next instruction

FE1 FE2 FE3 FE4 FE5 FE6

Next instruction

Issue rate: 2

Divider occupation cycle

Issue rate: 3

Execution Cycles: 3

Execution Cycles: 14

FE3 FE4 FE5 FE6

Execution Cycles: 4

Execution Cycles: 3