MITSUBISHI MICROCOMPUTERS
M37754M8C-XXXGP, M37754M8C-XXXHP
M37754S4CGP, M37754S4CHP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Access from even address
Access from odd address
φ1
φ1
Ai
A0 – A23
D0 – D7
Ai
A0 – A23
D0 – D7
Di
Di
BHE
ALE
RD, WR
BHE
ALE
RD, WR
φ1
φ1
Ai
A0 – A23
D0 – D7
A0 – A23
D0 – D7
Ai
A0 – A23
D0 – D7
A0 – A23
D0 – D7
Di
Di
BHE
ALE
RD, WR
BHE
ALE
RD, WR
φ1
φ1
Ai
A0 – A19
Ai
A0 – A23
(Note 1)
DHi
DLi
DHi
DLi
D8 – D15
(Note 1)
D0 – D7
BHE
ALE
BHE
ALE
RD, WR
RD, WR
φ1
φ1
Ai
A0 – A23
A0 – A23
(Note 1)
Ai
A0 – A23
D8 – D15
D0 – D7
DHi
D8 – D15
(Note 1)
DHi
D0 – D7
DLi
DLi
BHE
BHE
ALE
ALE
RD, WR
RD, WR
Notes 1: It becomes Hi-Z when reading, and it outputs undefined data when writing.
2: When the external data bus width is 8 bits, the function to output the low-order address from the Di pin while RD or WR is “H” can be selected only
in special area access cycle. Refer to the section on the processor mode for details.
Fig. 8 Output signals at 3-φ access in high-speed running
16
RENESAS [ RENESAS TECHNOLOGY CORP ]
