Rainbow Electronics AT73C246 - Manual (Page 12)

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
V
IN
Operating Supply Voltage V
INSYS,
V
IN{0,1,3,4}
present. 2.9 3.6 5.5 V
I
DD_VIN
POWERDOWN Mode.
All LDOs and DCDC converters
OFF. Audio OFF. RTC running.
- 20 40 µA
RUN Mode.
All LDOs and DCDC converters
running in PWM. Audio OFF. RTC
running.
- 7 15 mA
STANDBY Mode.
Default setup: DCDC0 ON in low-
power mode. LDO3 ON. All other
functions OFF.
- 310 500 µA
I
DD_RTC
All Modes.
RTC running. Total current
entering pin V
BACKUP
1 5 µA
Table 9-2. Supply Monitor Thresholds
Symbol Parameter Comments Min Typ Max Units
V
IN
> 3.1V PMU Input 3.1V Rising Threshold 3.070 3.1 3.130 V
V
IN
< 2.9V PMU Input 2.9V Falling Threshold 2.870 2.9 2.930 V
V
IN
> 2.7V PMU Input 2.7V Rising Threshold 2.70 2.75 2.85 V
V
IN
< 2.7V PMU Input 2.7V Falling Threshold 2.60 2.65 2.70 V
V
BKP
> 1.8V V
BACKUP
Input Rising Threshold 1.80 1.85 1.90 V
V
BKP
< 1.8V V
BACKUP
Input Falling Threshold 1.70 1.75 1.80 V