mf1s503x NXP Semiconductors, mf1s503x Datasheet - Page 8

• Manufacturer Part Number: mf1s503x
• Description: Mf1s503x Mifare Classic 1k - Mainstream Contactless Smart Card Ic For Fast And Easy Solution Development
• Manufacturer: NXP Semiconductors

NXP Semiconductors
MF1S503x
Product data sheet
PUBLIC
8.5 RF interface
8.6 Memory organization
The RF-interface is according to the standard for contactless smart cards
ISO/IEC 14443 A.
For operation, the carrier field from the reader always needs to be present (with short
pauses when transmitting), as 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).
The 1024 × 8 bit EEPROM memory is organized in 16 sectors of 4 blocks. One block
contains 16 bytes.
Fig 5.
Sector
15
14
1
0
:
:
:
Memory organization
Block
3
2
1
0
3
2
1
0
3
2
1
0
3
2
1
0
:
:
:
All information provided in this document is subject to legal disclaimers.
Rev. 3.1 — 21 February 2011
0
1
MIFARE Classic 1K - Mainstream contactless smart card IC
Key A
Key A
Key A
Key A
2
194031
3
4
Byte Number within a Block
5
Manufacturer Data
6
Access Bits
Access Bits
Access Bits
Access Bits
7
8
9
10
11
12
Key B
Key B
Key B
Key B
13
14
15
MF1S503x
© NXP B.V. 2011. All rights reserved.
Description
Sector Trailer 15
Data
Data
Data
Sector Trailer 14
Data
Data
Data
Sector Trailer 1
Data
Data
Data
Sector Trailer 0
Data
Data
Manufacturer Block
001aan011
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