m37702s1afp Mitsumi Electronics, Corp., m37702s1afp Datasheet - Page 41

• Manufacturer Part Number: m37702s1afp
• Description: Single-chip 16-bit Cmos Microcomputer
• Manufacturer: Mitsumi Electronics, Corp.

Fig. 52 Processor mode and ports P4 to P0 functions
Port
Port P0
Port P3
Port P4
(Evaluation
chip mode
only.)
(Evaluation
chip mode
only.)
BYTE =“L”
BYTE =“H”
BYTE =“L”
BYTE =“H”
or 2 • V
or 2 • V
Mode
CM
CM
CC
CC
1
0
P0
P0
P1
P1
P2
P2
P3
P3
P4
P4
P4
to
to
to
to
to
E
E
E
E
E
7
0
7
0
7
0
3
0
7
0
2
When processor mode
register bit 7 =“0”
Same as above except P4
When processor mode
register bit 7 =“1”
Single-chip Mode
1
I/O Port
I/O Port
I/O Port
I/O Port
I/O Port
0
0
2
P3
P1
P1
P1
P1
P2
P2
P2
P2
P3
P3
P3
P4
P4
P4
P4
P4
P0
P0
E
E
E
to
E
to
E
E
to
to
to
to
E
M37702M2AXXXFP, M37702M2BXXXFP
0
7
0
7
0
7
0
7
0
3
2
1
7
2
1
0
2
7
0
Same as above except P4
When processor mode
register bit 7 =“1”
A
A
A
Memory Expansion Mode
23
23
15
When processor mode
register bit 7 =“0”
to A
to A
to A
Address
Address
Address
1
Address A
Address A
16
16
8
ALE
I/O Port
HLDA
HOLD
RDY
BHE
R
0
1
/W
(even, odd)
Data(odd)
15
7
(even)
Data
to A
Data
to A
M37702S1AFP, M37702S1BFP
0
8
2
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Microprocessor
Same as left in
spite of proces
-sor mode regi
-ster bit 7
Same as left
Same as left
Same as left
Same as left
Same as left
Same as left
Mode
MITSUBISHI MICROCOMPUTERS
1
0
P4
P4
P4
P4
P4
P4
P4
P4
P1
P1
P2
P2
E
to
E
to
E
Ports P4, P5 and their direction
registers are treated as 16-bit wide
bus. If BYTE = 2 • V
ROM area is also treated as 16-bit
wide bus.
Same as for Port P1
7
6
5
4
3
2
1
0
7
0
7
0
A
A
23
Evaluation Chip Mode
15
to A
to A
1
Address
Address
VPA
VDA
Same as left
Same as left
Same as left
Same as left
16
8
HOLD
DBC
QCL
RDY
1
1
MX
(even, odd)
Data(odd)
CC
Data
, the internal
41