R01UH0136EJ0210 Rev.2.10
Page 151 of 800
Jul 31, 2012
M16C/64A Group
11. Bus
Figure 11.6
Typical Bus Timings Using Software Wait States (1/2)
BCLK
RD
Data
Address
A
A
RD
A
A
Bus cycle = 2
φ
Bus cycle = 2
φ
(1) Separate Bus, No Wait States
(2) Separate Bus, One Wait State (1
φ
+ 1
φ
)
WD
Bus cycle = 2
φ
Bus cycle = 1
φ
(3) Separate Bus, Two Wait States (1
φ
+ 2
φ
)
WD
A
A
Bus cycle = 3
φ
Bus cycle = 3
φ
RD
BCLK
BCLK
CSi
RD
Data
Address
CSi
CSi
RD
Data
Address
RD
WD
Note:
1. When consecutively accessing the same chip-select area, CSi continues outputting a low level.
i = 0 to 3
A: Address RD: Read data (input) WD: Write data (output)
(Note 1)
(Note 1)
(Note 1)
WR
,
WRL
,
WRH
WR
,
WRL
,
WRH
WR
,
WRL
,
WRH
Содержание M16C/60 Series
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