>>> Una curiosità, secondo voi le lampade a ultravioletti che servono ad
>>> asciugare la vernice che si mettono le donne sulle unghie potrebbe
>>> essere sufficiente per cancellare le eprom? dico questo perchè
>>> apparecchietti del genere si trovano anche a meno di 15 euro.
Dal datasheet delle 2732:
ERASURE OPERATION
The erasure characteristics of the M2732A are
such that erasure begins when the cells are exposed
to light with wavelengths shorter than approximately
4000 Å. It should be noted that sunlight
and certain types of fluorescent lamps have wavelengths
in the 3000-4000 Å range. Research shows
that constant exposure to room level fluorescent
lighting could erase a typical M2732A in approximately
3 years, while it would take approximately
1 week to cause erasure when exposed to the
direct sunlight. If the M2732A is to be exposed to
these types of lighting conditions for extended periods
of time, it is suggested that opaque labels be
put over the M2732A window to prevent unintentional
erasure.
The recommended erasure procedure for the
M2732A is exposure to shortwave ultraviolet light
which has a wavelength of 2537 Å. The integrated
dose (i.e. UV intensity x exposure time) for erasure
should be a minimum of 15 W-sec/cm2. The erasure
time with this dosage is approximately 15 to
20 minutes using an ultraviolet lamp with 12000
mW/cm2 power rating. The M2732A should be
placed within 2.5 cm of the lamp tubes during
erasure. Some lamps have a filter on their tubes
which should be removed before erasure.
Quindi occorre controllare che la lampada generi ultravioletti da 4000
Angstrom o meno.
Ciao.
Roberto