4502 datasheet(77/214 Pages) RENESAS

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INSTRUCTIONS

1-65

4502 Group

HARDWARE

Rev.2.01

Feb 02, 2005

REJ09B0193-0201

DI (Disable Interrupt)

0000000100

004

–

Grouping:

Interrupt control operation

Description: Clears (0) to interrupt enable flag INTE, and

disables the interrupt.

Note:

Interrupt is disabled by executing the DI in-

struction after executing 1 machine cycle.

Operation:

(INTE)

← 0

DWDT (Disable WatchDog Timer)

1010011100

29C

–

Grouping:

Other operation

Description: Stops the watchdog timer function by the

WRST instruction after executing the

DWDT instruction.

Operation:

Stop of watchdog timer function enabled

EPOF (Enable POF instruction)

0001011011

05B

–

Grouping:

Other operation

Description: Makes the immediate after POF or POF2

instruction valid by executing the EPOF in-

struction.

Operation:

POF instruction, POF2 instruction valid

EI (Enable Interrupt)

0000000101

005

–

Grouping:

Interrupt control operation

Description: Sets (1) to interrupt enable flag INTE, and

enables the interrupt.

Note:

Interrupt is enabled by executing the EI in-

struction after executing 1 machine cycle.

Operation:

(INTE)

← 1

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

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