4502 datasheet(82/214 Pages) RENESAS

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Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

INSTRUCTIONS

1-70

Rev.2.01

Feb 02, 2005

4502 Group

HARDWARE

REJ09B0193-0201

POF (Power OFf1)

0000000010

002

–

Grouping:

Other operation

Description: Puts the system in RAM back-up state by

executing the POF instruction after execut-

ing the EPOF instruction.

However, the voltage drop detection circuit is valid.

Note:

If the EPOF instruction is not executed before

executing this instruction, this instruction is

equivalent to the NOP instruction.

POF2 (Power OFf2)

0000001000

008

–

Grouping:

Other operation

Description: Puts the system in RAM back-up state by

executing the POF2 instruction after ex-

ecuting the EPOF instruction. Operations of

all functions are stopped.

Note:

If the EPOF instruction is not executed before

executing this instruction, this instruction is

equivalent to the NOP instruction.

Operation:

RAM back-up

Operation:

RAM back-up

However, voltage drop detection circuit valid

RAR (Rotate Accumulator Right)

0000011101

01D

0/1

–

Grouping:

Arithmetic operation

Description: Rotates 1 bit of the contents of register A in-

cluding the contents of carry flag CY to the

right.

Operation:

→ CY → A3A2A1A0

RB j (Reset Bit)

00010011j

–

Grouping:

Bit operation

Description: Clears (0) the contents of bit j (bit specified

by the value j in the immediate field) of

M(DP).

Operation:

(Mj(DP))

← 0

j = 0 to 3

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

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