DS1963L − 256 byte Monetary iButton
Non-volatile R/W memory with counters
1A [.]XXXXXXXXXXXX[XX][/[ pages/count.[0-15|ALL] | memory | pages/page.[0-15|ALL] | ]]
1A
read-only,
unsigned
Each write to the memory page increments the counter. An
application can tell if the memory has been changed by
another process.
Only 4 pages are
actually connected to counters:
Counter1
page/counter.12
Counter2
page/counter.13
Counter3
page/counter.14
Counter4
page/counter.15
None.
The DS1963L (3) is used for read/write storage. It’s main advantage is for audit trails (i.e. a digital purse). Each write to pages 12-15 will increment the read-only counter. OWFS system handles this automatically.
http://datasheets.maxim-ic.com/en/ds/DS1963L.pdf
http://www.owfs.org
Paul Alfille ([email protected])