Table of Contents
Advertisement
4.5 Bus Access
4.5.1 Number of access clocks
The number of basic clocks required to access each resource is shown below.
Bus Cycle Status
Resource (Bus Width)
Internal ROM (32 bits)
Internal RAM (32 bits)
On-chip peripheral I/O (16 bits)
External memory (16 bits)
Notes 1.
This value is 2 in the case of instruction branch.
2.
This value is 2 if there is conflict with data access.
3.
MIN. value
Remark
Unit: Clock/access
86
CHAPTER 4 BUS CONTROL FUNCTION
Instruction Fetch
Note 1
1
Note 2
1
−
Note 3
3
User's Manual U15195EJ5V0UD
Operand Data Access
5
1
Note 3
5
Note 3
3
Advertisement
Table of Contents
