Idle – Samsung S3F80JB User Manual

Page 171

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S3F80JB

INSTRUCTION SET

6-43

IDLE

—

Idle Operation

IDLE

Operation:

The IDLE instruction stops the CPU clock while allowing system clock oscillation to continue. Idle
mode can be released by an interrupt request (IRQ) or an external reset operation.

Flags:

No flags are affected.

Format:

Bytes Cycles Opcode

(Hex)

Addr Mode

dst src

opc

1 4 6F –

–

Example:

The instruction

IDLE

stops the CPU clock but not the system clock.