
ZENO
®
-3200 USER MANUAL
Coastal Environmental Systems (206) 682-6048
Page 67
Difference
Internal
connection.
Connected directly to the
CPU via 32 address lines.
Connected via an internal high-speed serial
communications link.
Access rate to
CPU
Operates virtually at the same
rate as the CPU clock speed.
Operates at a speed slower than the CPU
clock speed. Access is slower than RAM.
Memory
architecture
Continuous memory within
valid address range.
Memory that is segmented between 2048
sectors in each 1-MB chip. Access to some
sectors is restricted.
67
Each sector is 536
bytes in length.
Temperature range
-55C to +85C. -40C to +85C. The ZENO
®
-3200 will
STOP logging Data Records when the
internal temperature goes below -40C.
68
Lifespan Indefinite.
69
Limited to 10,000 write-cycles for each
sector.
Initialization None required. A new flash logging memory board will be
initialized by the ZENO
®
-3200 at power up.
Effect on ZENO
®
-
3200 timing
None. May retard access to the User Interface in
complex configurations.
70
Data Retrieval Retrieving Data Records from flash logging memory is no different than from
RAM.
If you plan to use a ZENO
®
-3200 in an environment where the temperature
can go below -40C, Coastal Environmental Systems DOES NOT
recommend use of flash logging memory.
Since flash logging memory requires more time by the CPU and
ZENOSOFT
®
to operate, Coastal Environmental Systems DOES NOT
recommend use of flash logging memory with configurations that require
logging Data Records faster than once every 10 seconds.
67
Not all of the 2048 sectors on a flash memory chip can be written to. Some sectors contain specific
manufacturer's information and some are not write-able due to problems in manufacturing. The ZENO
®
-3200
maintains and continually updates a table of all restricted sectors. It will not write any Data Records to any
restricted sectors.
68
The flash logging memory can be physically damaged if written to when the temperature goes below -40C.
69
RAM can be disrupted by radioactive materials or cosmic radiation, but this is an extremely low probability.
70
Refer to Section 12.1.9.
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