Renesas FP-80B Manual de usuario descargar pdf (Pagina 31)

100

HD404818 Series

the next instruction after the SBY instruction. If the interrupt enable flag is 1, that interrupt is then

processed; if it is 0, the interrupt request is left pending and normal instruction execution continues. A

flowchart of operation in standby mode is shown in figure 10.

Standby

Oscillator: Active

Peripheral clocks:

Active

All other clocks:

Stop

RESET

= 1 ?

Yes

IF0 =

1 ?

Yes

IM0 =

0 ?

IF1 =

1 ?

Yes

IM1 =

0 ?

IFTA =

1 ?

Yes

IMTA =

0 ?

IFTB =

1 ?

Yes

IMTB =

0 ?

IFTC =

1 ?

Yes

IMTC =

0 ?

IFS =

1 ?

Yes

IMS =

0 ?

Yes

(SBY only)

Watch

Oscillator: Stop

Suboscillator: Active

Peripheral clocks: Stop

All other clocks: Stop

Restart

processor clocks

Reset MCU

Execute

next instruction

Accept interrupt

Execute

next instruction

(active mode)

Restart

processor clocks

Yes

IF = 1,

IM = 0, and

IE = 1?

(SBY only)

Figure 10 MCU Operating Flowchart of Watch and Standby Modes

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 99 100

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