GR12883
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GR12883
DESCRIPTION
The GR12883 is a 131072 word by 8 bits (128K x 8) non-volatile CMOS Static Ram, fabricated from
advanced silicon gate CMOS technology and a high reliability lithium power cell.The power down circuit is
fully automatic and is referenced at 4.5 volts. At this point the GR12883 is write protected by an internal
inhibit function for Data Protection and the memory contents are retained by the lithium power source.Power
down is very fast, this being essential for data integrity, taking a maximum of 15 S (15 microseconds) to
power down from 5 volts to 0 volts. This is much faster than system power failure conditions. Therefore
there are no special conditions required when installing the GR12883.The GR12883 can, without external
power, retain data almost indefinitely. The limiting factor will be the shelf life of the lithium cell, which is
typically ten years. It is possible that this figure may be extended in view of the extremely light duty imposed
upon the cell.
TECHNICAL DATA
GR12883
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APPLICATION
When powered down, the GR12883 is transportable and data can be moved from system to system, this
makes it ideal for programme development, data collection in data loggers, programme changes in process
control, automation and robotics and user definable lookup tables, etc.
Additional information available through our technical sevices department.
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