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AS8650B

Datasheet - Contents

Contents

1 General Description ..................................................................................................................................................................

1

2 Key Features.............................................................................................................................................................................

1

3 Applications...............................................................................................................................................................................

1

4 Pin Assignments .......................................................................................................................................................................

4

4.1 Pin Descriptions.................................................................................................................................................................................... 4

5 Absolute Maximum Ratings ......................................................................................................................................................

6

6 Electrical Characteristics...........................................................................................................................................................

7

6.1 Electrical System Specification............................................................................................................................................................. 8

6.2 DCDC Converter .................................................................................................................................................................................. 8

6.3 Low Drop Out Regulators..................................................................................................................................................................... 9

6.4 CAN Transceiver ................................................................................................................................................................................ 10

6.4.1 Timing Diagrams........................................................................................................................................................................ 12

6.5 Undervoltage Detection...................................................................................................................................................................... 13

6.6 Digital Timing Specification ................................................................................................................................................................ 13

6.6.1 System Specification and Timings............................................................................................................................................. 16

7 Detailed Description................................................................................................................................................................

17

7.1 Operating Modes and States.............................................................................................................................................................. 17

7.1.1 Normal Mode ............................................................................................................................................................................. 17

7.1.2 Receive-Only Mode ................................................................................................................................................................... 17

7.1.3 Standby Mode............................................................................................................................................................................ 17

7.1.4 Sleep Mode................................................................................................................................................................................ 17

7.2 Power Management Strategy............................................................................................................................................................. 17

7.3 State Diagram..................................................................................................................................................................................... 20

7.4 Initialization Sequence........................................................................................................................................................................ 20

7.5 DCDC Converter ................................................................................................................................................................................ 22

7.6 Voltage Regulator LDO1..................................................................................................................................................................... 22

7.7 Voltage Regulator LDO2..................................................................................................................................................................... 22

7.8 Voltage Regulator LDO3..................................................................................................................................................................... 22

7.9 Over-Temperature Monitor ................................................................................................................................................................. 22

7.10 Undervoltage Reset.......................................................................................................................................................................... 22

7.11 Reset Block...................................................................................................................................................................................... 23

7.12 CAN Transceiver .............................................................................................................................................................................. 24

7.12.1 BUS Driver............................................................................................................................................................................... 24

7.12.2 Normal Receiver...................................................................................................................................................................... 24

7.12.3 Low Power Receiver................................................................................................................................................................ 24

7.12.4 Operating Modes ..................................................................................................................................................................... 24

7.12.5 Local Wake-up Event............................................................................................................................................................... 24

7.12.6 Remote Wake-up..................................................................................................................................................................... 25

7.13 Internal Flags.................................................................................................................................................................................... 26

7.13.1 VSUP_UV_flag ........................................................................................................................................................................ 26

7.13.2 VSUP_POK_flag...................................................................................................................................................................... 26

7.13.3 V5V_UV_flag ........................................................................................................................................................................... 26

7.13.4 V5V_POK_flag......................................................................................................................................................................... 26

7.13.5 VLDO2_UV_flag ...................................................................................................................................................................... 26

7.13.6 VLDO2_POK_flag.................................................................................................................................................................... 26