Rainbow-electronics AT73C246 Manual do Utilizador descarregar pdf (Página 12)

11050A–PMAAC–07-Apr-10

AT73C246

9. PMU Electrical Characteristics

9.1 Current Consumption Versus Modes

9.2 Supply Monitor Thresholds

The following table applies to functional state diagrams of Figure 11-1 “AT73C246 Power Man-

ager Functional State Diagram” on page 25 and Figure 11-2 “AT73C246 Start-up and Shutdown

State Diagram” on page 26.

Table 9-1. Current Consumption Versus Modes

Symbol Parameter Comments Min Typ Max Units

Operating Supply Voltage V

INSYS,

IN{0,1,3,4}

present. 2.9 3.6 5.5 V

DD_VIN

POWERDOWN Mode.

All LDOs and DCDC converters

OFF. Audio OFF. RTC running.

-2040µA

RUN Mode.

All LDOs and DCDC converters

running in PWM. Audio OFF. RTC

running.

-715mA

STANDBY Mode.

Default setup: DCDC0 ON in low-

power mode. LDO3 ON. All other

functions OFF.

-310500µA

DD_RTC

All Modes.

RTC running. Total current

entering pin V

BACKUP

15µA

Table 9-2. Supply Monitor Thresholds

Symbol Parameter Comments Min Typ Max Units

> 3.1V PMU Input 3.1V Rising Threshold 3.070 3.1 3.130 V

< 2.9V PMU Input 2.9V Falling Threshold 2.870 2.9 2.930 V

> 2.7V PMU Input 2.7V Rising Threshold 2.70 2.75 2.85 V

< 2.7V PMU Input 2.7V Falling Threshold 2.60 2.65 2.70 V

BKP

> 1.8V V

BACKUP

Input Rising Threshold 1.80 1.85 1.90 V

BKP

< 1.8V V

BACKUP

Input Falling Threshold 1.70 1.75 1.80 V

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 158 159

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