MITSUBISHI MICROCOMPUTERS
M37754M8C-XXXGP, M37754M8C-XXXHP
M37754S4CGP, M37754S4CHP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
1
PM1
PM0
0
0
0
1
0
Port
Microprocessor mode (Note 1)
Mode
Single-chip mode
Memory expansion mode (Note 1)
E/RD
Same as left
Same as left
(Note 1)
RD
(Note 2)
E
E/RD
E
E/RD
E
Port P0
Port P1
Port P2
P00
to
P27
P00
to
P27
I/O port
Address A0 to A19,A23
E
BYTE = “L”
Same as left
Same as left
P100
to
P107
Data (even)
E
P100
to
P107
• Condition except following
E
I/O port
Port
P10
P100
to
P107
Data
(odd, even)
BYTE = “H”
• When multiplex bus select bit is “1” and
___
accessing CS4 area
E
Same as left
P100
to
Address
Data
P107
LA0 to LA7 (odd, even)
E
E
Same as left
Same as left
BYTE = “L”
BYTE = “H”
P110
to
P117
Data (odd)
I/O port
Port
P11
P110
to
P117
I/O port
P110
to
P117
E
E
P30
P31
(Note 2)
WR
BHE
Same as left
Port P3
P30
to
P33
I/O port
ALE
HLDA
P32
P33
E
E
P40
to
P40
P41
input
HOLD
I/O port
Clock φ1 is output from P42 regardless of
bit 7 of processor mode register 0 ; others
are the same as left (Note 2)
P47
input
RDY
Port P4
Clock φ 1 is output from P42 when bit 7 of
processor mode register 0 is “1”.
P42
to
P47
I/O port
Clock φ 1 is output from P42 when bit 7 of
processor mode register 0 is “1.”
Fig. 85 Processor modes and ports P0 to P4, P10 and P11
__
Notes 1 : E signal is not output in the memory expansion and microprocessor modes.
__
2 : The signal output stop disable bit (bit 4 of particular function select register 0) can stop E output in the single-chip mode and φ1 output in the micro-
___ ___
processor mode. Similarly, when accessing the internal memory in the memory expansion and microprocessor modes, RD and WR output can be
fixed to “H”. Refer to Table 8 for details.
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RENESAS [ RENESAS TECHNOLOGY CORP ]
