M37920S4CGP データシートの表示（PDF） - MITSUBISHI ELECTRIC

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M37920S4CGP

16-BIT CMOS MICROCOMPUTER

MITSUBISHI ELECTRIC  

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MITSUBISHI MICROCOMPUTERS

M37920S4CGP

16-BIT CMOS MICROCOMPUTER

76 5432 1 0

00

0

Processor mode register 1

Address

5F16

Fix this bit to “0”.

Direct page register switch bit

0 : Only DPR0 is used.

1 : DPR0 to DPR3 are used.

RDY input select bit

0 : RDY input is disabled. (P30 functions as a programmable I/O port pin.)

1 : RDY input is enabled. (P30 functions as pin RDY.)

ALE output select bit

0 : ALE output is disabled. (P40 functions as a programmable I/O port pin.)

1 : ALE output is enabled. (P40 functions as pin ALE.)

Recovery cycle insert select bit

0 : No recovery cycle is inserted at access to the external area.

1 : Recovery cycle is inserted at access to the external area.

HOLD input, HLDA output select bit

0 : HOLD input and HLDA output are disabled.

(P40 and P44 function as programmable I/O port pins.)

1 : HOLD input and HLDA output are enabled.

(P43 and P44 function as pins HOLD and HLDA, respectively.)

“0” at read.

Fig. 5 Processor mode register 1’s bit configuration

11

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