AS3953-DK-ST Datasheet, PDF (2/42 Pages) List of Unclassifed Manufacturers – 14443 High Speed Passive Tag Interface

AS3953
Datasheet - Contents
Contents
1 General Description .................................................................................................................................................................. 1
2 Key Features............................................................................................................................................................................. 1
3 Applications............................................................................................................................................................................... 1
4 Pin Assignments ....................................................................................................................................................................... 4
4.1 Pin Descriptions.................................................................................................................................................................................... 5
5 Absolute Maximum Ratings ...................................................................................................................................................... 6
6 Electrical Characteristics........................................................................................................................................................... 7
6.1 Operating Conditions............................................................................................................................................................................ 7
6.2 DC/AC Characteristics for Digital Inputs and Outputs.......................................................................................................................... 7
6.3 Electrical Specification.......................................................................................................................................................................... 8
7 Detailed Description.................................................................................................................................................................. 9
7.1 Circuit ................................................................................................................................................................................................... 9
7.2 PICC AFE............................................................................................................................................................................................. 9
7.3 Power Manager .................................................................................................................................................................................. 11
7.4 ISO 14443A Framing Mode................................................................................................................................................................ 11
7.5 ISO 14443A Level-4 Protocol Mode................................................................................................................................................... 12
7.5.1 Coding of UID ............................................................................................................................................................................ 12
7.5.2 Coding of ATQA, SAK and ATS ................................................................................................................................................ 13
7.6 Proprietary Commands....................................................................................................................................................................... 15
7.6.1 Passing of Block Data to Controller ........................................................................................................................................... 17
7.6.2 Use of CID ................................................................................................................................................................................. 17
7.7 ISO 14443A Level-3 Protocol Mode................................................................................................................................................... 17
7.8 Transparent Mode .............................................................................................................................................................................. 18
7.9 EEPROM............................................................................................................................................................................................ 18
7.9.1 UID Word ................................................................................................................................................................................... 18
7.9.2 Fabrication Data Word............................................................................................................................................................... 18
7.9.3 Configuration Word.................................................................................................................................................................... 19
7.9.4 OTP Words ............................................................................................................................................................................... 21
7.9.5 Write Lock Word ........................................................................................................................................................................ 21
7.9.6 Read Lock Word ........................................................................................................................................................................ 21
8 Application Information ........................................................................................................................................................... 22
8.1 SPI Interface....................................................................................................................................................................................... 22
8.1.1 Writing of Data to Addressable Registers (Register Write Mode).............................................................................................. 23
8.1.2 Reading of Data from Addressable Registers (Register Read Mode) ....................................................................................... 24
8.1.3 Writing and Reading of EEPROM Through SPI ........................................................................................................................ 24
8.1.4 Loading Transmitting Data into FIFO......................................................................................................................................... 25
8.1.5 Reading Received Data from FIFO ........................................................................................................................................... 25
8.1.6 Direct Command Mode.............................................................................................................................................................. 26
8.1.7 SPI Timing ................................................................................................................................................................................. 26
8.1.8 Interrupt Interface ...................................................................................................................................................................... 28
8.1.9 FIFO Water Level and FIFO Status Register............................................................................................................................. 28
8.1.10 ISO 14443A Frame Data in FIFO ............................................................................................................................................ 29
8.2 Direct Commands............................................................................................................................................................................... 29
8.2.1 Set Default ................................................................................................................................................................................. 29
8.2.2 Clear .......................................................................................................................................................................................... 29
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