UPD77533 datasheet(36/104 Pages) RENESAS

номер детали	UPD77533

подробное описание детали	MOS INTEGRATED CIRCUIT

PDF	104 Pages

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производитель	RENESAS [Renesas Technology Corp]

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Data Sheet S15671EJ4V0DS

µµµµPD77533

7.2.2 Sleep Timer operation

The operation that is performed when a timeout occurs in the Sleep Timer set in 7.2.1 is shown in Figure 7-3.

Figure 7-3. Sleep Timer Timeout

Remark Idle state: State in which signal processing is stopped and there is no serial command

transmission/reception.

7.3

Restoring from Power Save Mode

The

µPD77533 returns from a power save mode (STOP or HALT) to normal mode (RUN) when the WKUPB pin

input is 0 or (HALT mode only) when any command is received. The WKUPB pin is active low.

7.3.1 Restoring via WKUPB pin input

The procedure for returning to normal mode from a power save mode via WKUPB pin input is shown in Figure 7-4.

Figure 7-4. Restoring from Power Save Mode (via WKUPB Pin Input)

PD77533

Host CPU

RFON = 0 (off)

STNDBYB = 0 (standby)

STOP or HALT

RUN

Idle state

Timeout

Sleep timer operating

PD77533

Host CPU

STNDBYB pin output

= 1 (standby released)

WKUPB pin input = 0

STOP or HALT

RUN

"Power Control"

UPD77533 датащи(PDF) 36 Page - Renesas Technology Corp