Datasheet

NTAG203 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet
COMPANY PROPRIETARY
Rev. 3.0 — 17 October 2011
213830 12 of 30
NXP Semiconductors
NTAG203
NFC Forum Type 2 Tag compliant IC with 144 bytes user memory
For locking of pages starting at page address 10h onwards, lock bytes located in page
28h are used. Those two lock bytes cover the memory area of 96 data bytes together with
configuration area from page address 28h onwards. Therefore, the granularity is larger
then for the first 64 bytes as shown in Figure 7 “
Lock bytes 3 and 4”.
The functionality beyond page address 28h which can be locked read-only is:
• the counter
• the lock bytes themselves
Fig 6. Lock bytes 1 and 2
001aai002
BLOCK LOCKING
LOCKBITS 15 - 10
BLOCK LOCKING
LOCKBITS 9 -4
BLOCK LOCKING
LOCKBIT 3 (OTP)
LOCK PAGE 3
OTP BYTES
LOCK PAGE 7 LOCK PAGE 6 LOCK PAGE 5 LOCK PAGE 4
LOCK PAGE 15 LOCK PAGE 14 LOCK PAGE 13 LOCK PAGE 12 LOCK PAGE 11 LOCK PAGE 10
LOCK PAGE 9 LOCK PAGE 8
MSB
654321 bit 7 65432
LSB MSB LSB
page 2 (02h) 1023
lock byte 0
lock byte 1
010bit 7
Fig 7. Lock bytes 3 and 4
aaa-001380
BLOCK LOCKING
BIT 1 - 3
LOCK PAGE
36 - 39
LOCK PAGE
32 - 35
LOCK PAGE
28 - 31
BLOCK LOCKING
BIT 5 - 7
LOCK PAGE
24 - 27
LOCK PAGE
20 - 23
LOCK PAGE
16 - 19
RFU RFU RFU
BLOCK LOCKING
LOCKBIT CNT
RFU RFU
LOCKBIT CNT
PAGE 41
RFU
MSB
6 5 4 3 2 1 bit 7 65432
LSB MSB LSB
page 40 (28h) 1023
010bit 7