SLE66R01PC datasheet(45/55 Pages) INFINEON

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SLE 66R01P / SLE 66R01PN

Command Set

Data Book

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2011-11-24

8.2.5

Write 2 Blocks (WR2B)

If write access is granted, i.e. if both addressed blocks are writable, the WR2B command is used to program two

blocks (8 bytes of data) to the specified address in the memory.

The Valid Address Range is 04

H-22H. Only even start addresses are allowed. If any other address is specified, the

SLE 66R01P and SLE 66R01PN responds with a NACK.

The WR2B command has the same programming time (approximately 4ms) for writing 8 bytes as the WR1B

command which writes 4 bytes of data to the specified memory.

Figure 23

Write 2 Blocks Command

Table 19

Write 2 Block (WR2B)

Command

Length

Code Parameter

Data

Integrity

Mechanism

Response

12 bytes

Valid Address Range

H - 22H; only even

start addresses

allowed

8 bytes data

2 bytes CRC

(1 parity bit per byte)

ACK or

NACK or

A1H

ADR

CRC0 CRC1

NACK

1038 µs

min.

86µs

4235 µs

56µs

Command ‚Write 2 Blocks’

PICC Response

ISO/IEC 14443 Type A Reader

Please note: Timing is rounded i .e. it is not exact grid timing

...

ACK

56µs

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