3-2SectionData Carrier Memory Map
21
3-2 Data Carrier Memory Map
Access
to a maximum
of 64k bytes of (0000 to FFFF) ID Controller memory area
is
possible. The actual accessible memory area of
the ID Controller varies with
the memory capacity of the DC.
A DC with a memory capacity of more than 256 bytes has a production date
(month
and year) area and
write protected area. On the other hand, a DC with a
memory
capacity of 256 bytes or less does not have a production date (month
and
year) area.
The processing methods of these areas vary between a DC with
a memory capacity of 256 bytes or less and a DC with a memory capacity of
more than 256 bytes.
The system areas of DCs vary with the kind of memory (SRAM or EEPROM).
For details refer to the manuals for the R/W Head and DC.
3-2-1 Memory Map
0 0 0 0
0 0 0 1
0 0 0 2
0 0 0 3
:
:
:
:
Address
Write
protected area
User area
1 byte
Data
DC with a Memory Capacity of 256 Bytes or Less
0 0 0 0
0 0 0 1
0 0 0 2
to
0 0 0 5
0 0 0 6
to
0 0 F F
0 1 0 0
to
0 1 F F
to
to
Production date (month, year) area
Address
Data
W
rite protected area
DC with a Memory Capacity of More Than 256 Bytes
1 byte
Note Refer
to
Appendix A
for the DC’
s memory capacity and memory types in detail.
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