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 10 of 32
NXP Semiconductors
MF1S5009
Mainstream contactless smart card IC
9.5 RF interface
The RF-interface is according to the standard for contactless smart cards
ISO/IEC 14443 A.
The carrier field from the reader is always present (with short pauses when transmitting),
because it is used for the power supply of the card.
For both directions of data communication there is only one start bit at the beginning of
each frame. Each byte is transmitted with a parity bit (odd parity) at the end. The LSB of
the byte with the lowest address of the selected block is transmitted first. The maximum
frame length is 163 bits (16 data bytes + 2 CRC bytes = 16 * 9 + 2 * 9 + 1 start bit).
9.6 Memory organization
The 1024 x 8 bit EEPROM memory is organized in 16 sectors with 4 blocks of 16 bytes
each. In the erased state the EEPROM cells are read as a logical “0”, in the written state
as a logical “1”.
Fig 6. Memory organization
001aam203
Byte Number within a Block
15141312111098765
Key A Access Bits Key B
43210Block
3
Sector
15
2
1
0
Description
Sector Trailer 15
Data
Data
Data
Sector Trailer 14
Data
Data
Data
Sector Trailer 0
Data
Data
Manufacturer Block
Sector Trailer 1
Data
Data
Data
314
2
1
0
31
2
1
0
30
2
1
0
:
:
:
:
:
:
Key A Access Bits Key B
Key A Access Bits Key B
Key A Access Bits Key B