Datasheet

MF1S5009 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved.
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
Fig 11. Frame Delay Time (from PCD to PICC), and T
ACK
and T
NAK
001aam20
8
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)
T
ACK
, T
NAK
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