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M37733S4

16-BIT CMOS MICROCOMPUTER

MITSUBISHI ELECTRIC  

New product

MITSUBISHI MICROCOMPUTERS

M37733S4BFP

16-BIT CMOS MICROCOMPUTER

PM1

PM0

Mode

Pin

P00/A0 - P07/A7

1

0

Microprocessor mode

E

P00/A0

P07/A7

Address A0-A7

(Note)

1

1

Evaluation Chip mode

Same as left

P10/A8/D8

P17/A15/D15

BYTE = “L”

BYTE = “H”

E

A8 to A15

P10/A8/D8

Address

P17/A15/D15

Data(odd)

E

P10/A8/D8

P17/A15/D15

Address A8-A15

Same as left

E

A8 to A15

P10/A8/D8

Address

P17/A15/D15

Data(odd)

Ports P4, P5 and their direction registers

are treated as 16-bit wide bus.

P20/A16/D0

P27/A23/D7

BYTE = “L”

E

A16 to A23

P20/A16/D0

Address

P27/A23/D7

BYTE = “H”

E

A16 to A23

P20/A16/D0

Address

P27/A23/D7

Data(even)

Data(even, odd)

E

Same as left

E

A16 to A23

P20/A16/D0

Address

P27/A23/D7

Data(even, odd)

Ports P4, P5 and their direction registers

are treated as 16-bit wide bus.

P30/R/W,

P31/BHE,

P32/ALE,

P33/HLDA

P30/R/W

P31/BHE

P32/ALE

R/W

BHE

ALE

Same as left

P33/HLDA

HLDA

HOLD,

RDY,

P42/ 1,

P43 to P47

E

HOLD

RDY

P42/ 1

P43

P47

HOLD

RDY

I/O Port

(Note)

E

HOLD

RDY

P42/ 1

P43

P44

P45

P46

P47

MX

QCL

VDA

VPA

DBC

Fig. 9 Relationship between pins P00 /A0 to P47 and processor modes

Note. The signal output disable selection bit (bit 6 of the oscillation circuit control register 0) can stop the 1 output

_

in the microprocessor mode. In the microprocessor mode, signal E can also be fixed to “H” when the internal

memory area is accessed.

11

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