Temperature recorder DS1615

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< Digital Electronic ~ Temperature recorder DS1615

eric

Posted: Thu Oct 12, 2006 10:20 pm Post subject: Temperature recorder DS1615

Site Admin Joined: 01 Jan 1970 Posts: 311

The DS1615 is an integrated temperature
recorder which is not only capable
of working as a data logger (for temperature
measurements) but also of
histogram tabulation (number of discrete
measurements) taken within the
temperature range –40°C to +85°C.
Its on-chip real-time clock (RTC)
counts seconds minutes, hours, days,
months, days of the week and years, all
in BCD (binary coded decimal) format.
The RTC is aware of leap years and
claimed to be fully Millennium proof.
The temperature recorder may be
programmed to any alarm time you
want within one week. When the
alarm time is reached, the DS1615 generates
an interrupt.
The IC allows you to program measurement
intervals ranging from
1 minute to 255 minutes. This applies
to both measurement modes. The nonvolatile
measurement data memory
has a capacity of 2048 samples including
start a time marker (‘stamp’) when
used as a data logger, or 63 two-byte
data bins in 2°C increments when the
histogram mode is employed. Each of
these 63 data bins is capable of recording
25,535 measurements.
High and low temperature trip
points may be programmed at which
an alarm condition is generated (i.e., an
interrupt is generated, or a status pin
toggles).
The DS1615 is connected to a host
PC via a serial interface capable of synchronous
and asynchronous operation.
The command to start measuring does
not necessarily have to arrive via the
serial interface — it may also be issued
by pressing a pushbutton.
ME M O RY M A P
Because of the relative complexity of
the IC, it is impossible to describe all its
features on a couple of magazine
pages. If you want to become conversant
with the DS1615 hardware and
software environment, you should
download the 20-page datasheet from
this web URL

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