H8SXSLASH1663M datasheet(1314/1504 Pages) RENESAS

1314 / 1504 page

Section 28 Power-Down Modes

Rev. 2.00 Sep. 24, 2008 Page 1282 of 1468

REJ09B0412-0200

SLPIE = 0

Yes

Instruction before SLEEP instruction

Instruction after SLEEP instruction

SLEEP instruction executed (SLPIE = 0)

Canceling factor

interrupt

Transition by interrupt

exception handling

Interrupt handling routine

RTE instruction executed

Power-down

state

Figure 28.10 When an Interrupt that Initiates Exit from the Power-Down State

is Generated after SLEEP Instruction Execution

SLPIE = 0

Yes

Instruction before SLEEP instruction

Instruction after SLEEP instruction

SLEEP instruction executed (SLPIE = 0)

Canceling factor

interrupt

Canceling factor

interrupt

Transition by interrupt exception handling

Return from the power-

down state after the next

canceling factor interrupt

is generated

Interrupt handling routine

RTE instruction executed

Power-down state

Yes

Transition by interrupt exception handling

Interrupt handling routine

RTE instruction executed

Figure 28.11 When an Interrupt that Initiates Exit from the Power-Down State

is Generated before SLEEP Instruction Execution

(Sleep-Instruction Exception Handling does not Proceed)

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