MF1S5009

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Product data sheet

PUBLIC

Rev. 3 — 27 July 2010

189131

17 of 32

NXP Semiconductors

MF1S5009

Mainstream contactless smart card IC

All timing can be measured according to ISO/IEC 14443-3 frame specification as shown

for the Frame Delay Time in Figure 11. For more details refer to Ref. 3 and Ref. 4.

FDTPCD2PICC = Frame delay time PCD to PICC.

FDTPICC2PCD = Frame delay time PICC to PCD (must be at least 87

μS).

Remark: Due to the coding of commands, the measured timings usually exclude (a part

of) the end of communication. This needs to be considered, when comparing the given

times with the measured ones.

10.3 MIFARE ACK and NAK

The MIFARE Classic uses a 4 bit ACK / NAK as shown in Table 9.

(1) Measurement of the FDT (Frame Delay Time) from PCD to PICC

001aam208

Last data bit transmitted by PCD

FDT = (n* 128 + 84)/fc

256/fc

End of communication (E)

128/fc

logic ''1''

128/fc

Start of

communication (S)

First modulation of PICC

FDT = (n* 128 + 20)/fc

256/fc

End of communication (E)

128/fc

logic ''0''

128/fc

Start of

communication (S)

Table 9.

MIFARE ACK and NAK

Code (4-bit)

ACK/NAK

Ah

Acknowledge (ACK)

0h to 9h

NAK

Bh to Fh

NAK