Omron V720S Series, Operation Manual

Page: 28 / 142

Memory Map of Tag Section 2-4
2-12
2-4-1 I.CODE1 Chip
(Philips Semiconductor IC;SL1 ICS30 01,SL ICS31 01)
1) SNR (pages FB and FC)
SNR is a Tag-specific code and has been written into the memory during the
chip production process.
The IC is shipped with this page write-access inhibited (refer to page FD);
there is no way of making this page rewritable by the user.
2) Write-access conditions (page FD)
The pages are write-inhibited permanently if they are so indicated in the
memory map. The factory settings are as follow. If the two bits of a
particular page are 0,0, that page is write-protected.
Page FD MSB LSB
Byte 0 1 1 1 1 0 0 0 0
Page FE Page FD Page FC Page FB
Byte 1 1 1 1 1 1 1 1 1
Page 02 Page 01 Page 00 Page FF
Byte 2 1 1 1 1 1 1 1 1
Page 06 Page 05 Page 04 Page 03
Byte 3 1 1 1 1 1 1 1 1
Page 0A Page 09 Page 08 Page 07
3) QUIET/EAS (page FE)
QUIET mode
:All the functions of a tag are suspended completely. Use
Reset Quiet Bit to resume these functions.
(q=0: QUIET mode is disabled; q=1: QUIET mode is
enabled)
EAS mode : Inhibition/permission of EAS function
(e=0: EAS mode is disabled; e=1: EAS mode is enabled)
Page FE
MSB LSB
Byte 0 × × × × q q e e
Byte 1 × × × × × × × ×
Byte 2 × × × × × × × ×
Byte 3 × × × × × × × ×
The pages marked with "×" in the table above are reserved for future use.
4) Family code/application ID (page FF)
Family code and application ID are special areas for enabling the user to
identify an IC that is suitable to a specific user application.
Block FF
MSB LSB
Byte 0 Family code
Byte 1 Application ID
Byte 2 User area
Byte 3 User area