HTMS8201FTK datasheet(25/57 Pages) NXP

25 / 57 page

HTMS1x01_8x01

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Product data sheet

COMPANY PUBLIC

Rev. 3.3 — 17 October 2014

152933

25 of 57

NXP Semiconductors

HTMS1x01; HTMS8x01

HITAG µ transponder IC

12.3.2 RWD receives no HITAG µ transponder IC response

During an inventory process, when the RWD has received no HITAG µ

advanced/advanced+ transponder IC response, it needs to wait TFp3 before sending a

subsequent EOF to switch to the next slot, if a 16 slot anticollision request is processed, or

sending a subsequent request (which could be again an inventory request).

TFp3 starts from the time the RWD has generated the falling edge of the last sent EOF.

The minimum value of TFp3 is TFp3min = TFp1max + TFpSOF.

TFpSOF is the time duration for a HITAG µ advanced/advanced+ transponder to transmit

an SOF to the reader.

[1]

TC...Carrier period time (kHz = 7.45 s nominal)

Fig 14. Protocol timing diagram without HITAG µ transponder IC response

Table 13.

Overview timing parameters [1]

Symbol

Min

Max

TFpSOF

 T

TFp1

204

 T

213

 T

TFp2

150

 T

TFp3

TFp1max + TFpSOF

001aaj834

carrier on

request

no response

request (or EOF)

carrier off

load off

load on

HITAG

reader

TFpSOF

TFp3

TFp1MAX

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