Renesas H8S/2318 series, Hardware Manual

Page: 934 / 1121

Rev. 5.00, 12/03, page 904 of 1088
A.5 Bus States during Instruction Execution
Table A-6 indicates the types of cycles that occur during instruction execution by the CPU. See
table A-4 for the number of states per cycle.
How to Read the Table:
Instruction
JMP@aa:24 R:W 2nd
Internal operation,
1 state
R:W EA
1 2 3 4 5 6 7 8
End of instruction
Order of execution
Read effective address (word-size read)
No read or write
Read 2nd word of current instruction
(word-size read)
Legend:
R:B Byte-size read
R:W Word-size read
W:B Byte-size write
W:W Word-size write
:M Transfer of the bus is not performed immediately after this cycle
2nd Address of 2nd word (3rd and 4th bytes)
3rd Address of 3rd word (5th and 6th bytes)
4th Address of 4th word (7th and 8th bytes)
5th Address of 5th word (9th and 10th bytes)
NEXT Address of next instruction
EA Effective address
VEC Vector address