AS3935-BQFT ams, AS3935-BQFT Datasheet - Page 2

• Manufacturer Part Number: AS3935-BQFT
• Description: Interface - Specialized
• Manufacturer: ams

Specifications of AS3935-BQFT

• Rohs: yes
• Operating Supply Voltage: 2.4 V to 5.5 V
• Supply Current: 100 mA
• Maximum Power Dissipation: 0.1 W
• Mounting Style: SMD/SMT
• Package / Case: MLPQ-16
• Supply Voltage - Max: 5.5 V

AS3935
Datasheet - C o n t e n t s
Contents
1 General Description ..................................................................................................................................................................
2 Key Features.............................................................................................................................................................................
3 Applications...............................................................................................................................................................................
4 Pin Assignments .......................................................................................................................................................................
5 Absolute Maximum Ratings ......................................................................................................................................................
6 Electrical Characteristics...........................................................................................................................................................
7 Typical Operating Characteristics .............................................................................................................................................
8 Detailed Description..................................................................................................................................................................
9 Package Drawings and Markings ...........................................................................................................................................
10 Ordering Information.............................................................................................................................................................
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4.1 Pin Descriptions...................................................................................................................................................................................
6.1 Operating Conditions...........................................................................................................................................................................
6.2 DC/AC Characteristics for Digital Inputs and Outputs .........................................................................................................................
6.3 Detailed System and Block Specification ............................................................................................................................................
8.1 Circuit ................................................................................................................................................................................................. 11
8.2 Operating Modes ................................................................................................................................................................................ 11
8.3 System and Block Specification ......................................................................................................................................................... 11
8.4 Serial Peripheral Interface (SPI)........................................................................................................................................................
8.5 I²C......................................................................................................................................................................................................
8.6 Voltage Regulator ..............................................................................................................................................................................
8.7 Analog Front-end (AFE) and Watchdog ............................................................................................................................................
8.8 Noise Floor Generator and Evaluation ..............................................................................................................................................
8.9 Lightning Algorithm ...........................................................................................................................................................................
8.10 Antenna Tuning ...............................................................................................................................................................................
8.11 Clock Generation .............................................................................................................................................................................
8.3.1 Register Table ........................................................................................................................................................................... 11
8.3.2 Register Table Description and Default Value........................................................................................................................... 12
8.4.1 SPI Command Structure............................................................................................................................................................ 14
8.4.2 Writing of Register Data............................................................................................................................................................. 15
8.4.3 Reading of Data from Addressable Registers (READ Mode) .................................................................................................... 15
8.4.4 Send Direct Command Byte ...................................................................................................................................................... 16
8.5.1 I²C Byte Write ............................................................................................................................................................................ 17
8.5.2 I²C Register Read ...................................................................................................................................................................... 18
8.5.3 Direct Command........................................................................................................................................................................ 18
8.9.1 Signal Validation ........................................................................................................................................................................ 20
8.9.2 Energy Calculation..................................................................................................................................................................... 21
8.9.3 Statistical Distance Estimation................................................................................................................................................... 21
8.9.4 Interrupt Management ............................................................................................................................................................... 22
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