r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 109

Manufacturer Part Number

r8a77850anbg

Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family

Manufacturer

Renesas Electronics Corporation.

Manufacturer

BOSTOCK HK LIMITED

Part Number:

r8a77850anbgV

Manufacturer:

Renesas Electronics America

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

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

Issue rate: 2

FE1 FE2 FE3 FE4 FE5 FE6

Issue rate: 3

Divider occupation cycle

Execution Cycles: 3

Rev.1.00 Jan. 10, 2008 Page 79 of 1658

Execution Cycles: 4

Execution Cycles: 14

FE3 FE4 FE5 FE6

Execution Cycles: 3

REJ09B0261-0100

4. Pipelining