Rainbow Electronics AT73C246 - Manual (Page 157)

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11050A–PMAAC–07-Apr-10
AT73C246
1 Description ............................................................................................... 2
2 Block Diagram .......................................................................................... 3
3 Package and Pinout ................................................................................. 4
4 Pin Description ......................................................................................... 5
5 Application Block Diagram ..................................................................... 8
6 Absolute Maximum Ratings .................................................................. 11
7 Recommended Operating Conditions .................................................. 11
8 Power Dissipation Ratings .................................................................... 11
9 PMU Electrical Characteristics ............................................................. 12
9.1Current Consumption Versus Modes ......................................................................12
9.2Supply Monitor Thresholds ......................................................................................12
9.3Digital I/Os DC Characteristics ................................................................................13
9.4DCDC0 and DCDC1 ................................................................................................14
9.5LDO2 .......................................................................................................................16
9.6LDO3 .......................................................................................................................17
9.7LDO4 .......................................................................................................................18
9.8LDO5 .......................................................................................................................19
9.9Measurement Bridge and 10-bit ADC .....................................................................20
9.10RTC Crystal Oscillator ...........................................................................................21
9.11Die Temperature Sensor .......................................................................................21
10 Audio Codec Electrical Characteristics ............................................... 22
11 PMU Functional Description ................................................................. 25
11.1Power Manager State Diagram .............................................................................25
11.2PMU Startup and Shutdown State Diagram ..........................................................26
11.3Power Manager Conditional Transitions ................................................................27
11.4Power Manager State Description .........................................................................29
11.5DCDC0 and DCDC1 Functional Description .........................................................36
11.6LDO2 Functional Description .................................................................................37
11.7LDO3 and LDO4 Functional Description ...............................................................37
11.8Power Fail Detectors .............................................................................................38
11.9Measurement Bridge and 10-bit ADC ....................................................................38
11.10Real Time Clock (RTC) User Interface ................................................................40
11.11Die Temperature Sensor .....................................................................................54