ST95HF datasheet(24/93 Pages) STMICROELECTRONICS

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Commands

ST95HF

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DocID025630 Rev 4

ISO/IEC 18092

NFC Forum Tag

Type 3

0x04

7:6

Transmission data rate

: RFU

: 212 Kbps

: 424 Kbps

: RFU

>>>0x02020451

ISO/IEC18092 tag, 212 Kbps

transmission and reception

rates with CRC appended.

Parameter ‘Slot counter’ is not

mandatory. If it is not present, it

is assumed that SlotCounter =

0x00

(1 slot)

For device detection

commands, byte 1 bit 4 must

be set to ‘0’. In this case, the

FWT is 2.4 ms for the 1st slot

and 1.2 ms more for each

following slot, if slot counter is

specified.

If slot counter = 0x10, the

ST95HF does not respect reply

timings, but polls incoming data

and searches a valid response

during ~8.4 ms.

5:4

Reception data rate

: RFU

: 212 Kbps

: 424 Kbps

: RFU

3:1

RFU

Append CRC if set to ‘1’.

(1)

7:5

RFU

0: FWT = 2.4 ms

1: FWT is specified by

PP:MM bits

3:0

Slot counter

: 1 slot

: 2 slots

…

: 16 slots

7:0

These 3 bytes are optional.

Default value PP:MM:DD: is 0

and corresponds to RWT

~302µs.

RWT = (2^PP)*(MM+1)*

(DD+128)*32/13.56µs

37:0

7:0

DD (optional to PP:MM)

1. It is recommended to set this bit to ‘1’.

2. Not characterized.

Table 12. List of <Parameters> values for the PROTOCOLSELECT command

for different protocols (Reader) (continued)

Protocol

Code

Parameters

Examples of commands

Byte

Bit

Function

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