UPD703100 datasheet(72/185 Pages) NEC

Part #	UPD703100

Description	32-Bit Single-Chip Microcontrollers

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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CHAPTER 5 INSTRUCTIONS

User’s Manual U12197EJ6V0UM

72

EI

Enable Interrupt

Instruction format

EI

Operation

PSW.ID

← 0 (enables maskable interrupt)

Format

Format X

Opcode

15

0

31

16

1000011111100000

0000000101100000

Flag

CY

–

OV

–

S

–

Z

–

SAT

–

ID

0

Instruction

EI Enable Interrupt

Explanation

Resets the ID flag of the PSW to 0 and enables the acknowledgement of maskable interrupts

beginning at the next instruction.

Remark

Interrupts are not sampled during instruction execution.

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