CR95HF datasheet(21/63 Pages) STMICROELECTRONICS

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CR95HF

Commands

Doc ID 018669 Rev 8

21/63

ISO/IEC

14443

Type A

NFC

Forum Tag

Type 4A

NFC

Forum Tag

Type 1

(Topaz)

NFC

Forum Tag

Type 2

Send example

9370800

F8C8E

Example of an NFC Forum Type 2

request sequence:

>>>0x04022607 (REQA)

<<<0x800544002800 (ATQA)

>>>0x0403932008 (Anti-collision CL1)

<<<0x80088804A8D5F1280000 (UID

CL1)...

Example of an NFC Forum Type 1

(Topaz) request sequence:

>>>0x04022607 (REQA)

<<<0x8005000C280000 (ATQ0 ATQ1)

>>>0x040878000000000000A8 (RID)

<<<0x800B11486E567A003E450800

00 (Header0 Header1 UID0 UID 1 UID2

UID3 CRC0 CRC1Signifcant bits

indexColbyte IndexColbit)

Application SW must specify how many

bits to send in the last byte. If flag

SplitFrame is set, CR95HF will expect

8 – <significant bit count> bits in the 1st

byte during reception. Otherwise it

expects 8 bits.

This command is useful for anti-collision.

Command code

Length of entire data field

Data

Transmission flags:

7: Topaz send format. Use EOF instead of

parity bit and use SOF at beginning of each

byte. Pause between bytes and assume 1st

byte is 7 bits.

6: SplitFrame

5: Append CRC

4: Do not decode parity bit for proprietary

framing

[3:0]: 8 – number of significant bits in last byte

ISO/IEC

14443

Type B

NFC

Forum Tag

Type 4B

Send example

050000

Example of an NFC Forum Type 4B

request sequence:

>>>0x0403050000 (REQB)

<<<0x800F5077FE01B30000000000

71718EBA00 (ATQB)

Command code

Length of entire data field

Data

ISO/IEC

18092

NFC

Forum Tag

Type 3

Send example

00FFFF0000

Example of an ISO/IEC 18092 / NFC

Forum Type 3 request sequence:

>>>0x040500FFFF0000 (REQC)

<<<0x801201010102148E0DB41310

0B4B428485D0FF00 (ATQC)

Command code

Length of entire data field

Data

Table 11.

List of

<Data> Send values for the SENDRECV command for different

protocols (continued)

Protocol

Explanation

Command example

Comments

CR95HF Datasheet(PDF) 21 Page - STMicroelectronics

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