UPD75212ACW データシートの表示（PDF） - NEC => Renesas Technology

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UPD75212ACW

4-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD75212A

Fig. 4-1 Program Memory Map

Address

0000H

0002H

0004H

0006H

0008H

000AH

000CH

000EH

76

0

MBE RBE Internal Reset Start Address (Most Significant 6 Bits)

Internal Reset Start Address (Least Significant 8 Bits)

MBE RBE INTBT/INT4 Start Address (Most Significant 6 Bits)

INTBT/INT4 Start Address (Least Significant 8 Bits)

MBE RBE INT0 Start Address

(Most Significant 6 Bits)

INT0 Start Address

(Least Significant 8 Bits)

MBE RBE INT1 Start Address

(Most Significant 6 Bits)

INT1 Start Address

(Least Significant 8 Bits)

MBE RBE INTCSIO Start Address

(Most Significant 6 Bits)

INTCSIO Start Address

(Least Significant 8 Bits)

MBE RBE INTT0 Start Address

(Most Significant 6 Bits)

INTT0 Start Address

(Least Significant 8 Bits)

MBE RBE INTTPG Start Address

(Most Significant 6 Bits)

INTTPG Start Address

(Least Significant 8 Bits)

MBE RBE INTKS Start Address

(Most Significant 6 Bits)

INTKS Start Address

(Least Significant 8 Bits)

CALLF

!faddr

Instruction

Entry Address

BRCB

!caddr

Instruction

Branch Address

CALL !addr

Instruction

Subroutine Entry

Address

0020H

007FH

0080H

GETI Instruction Reference Table

BR !addr

Instruction

Branch Address

BR $ addr Instruction

Relative Branch

Address

(-15 to -1 and +2 to +16)

07FFH

0800H

0FFFH

1000H

1FFFH

2000H

2F7FH

BRCB

!caddr Instruction

Branch Address

Branch Destination

Address and

Subroutine Entry

Address to be Set

by GETI Instruction

BRCB

!caddr Instruction

Branch Address

Remarks In all cases other than those listed above, branch to the address with only the lower 8 bits of the PC

changed is enabled by BR PCDE and BR PCXA instructions.

15

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