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PDF GR12883 Data sheet ( Hoja de datos )
| Número de pieza | GR12883 | |
| Descripción | NON-VOLATILE RAM | |
| Fabricantes | Greenwich | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de GR12883 (archivo pdf) en la parte inferior de esta página. Total 2 Páginas | ||
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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 µS (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.
APPLICATION
When powered down, the GR12883 is transportable
and data can be moved from system to system, this
makes it ideal for program development, data collection
in data loggers, program changes in process control,
automation and robotics and user definable lookup
tables, etc.
DISPOSAL INSTRUCTIONS
Do not dispose of non-volatile memory devices by
incineration or crushing. Devices may be returned
carriage paid to Greenwich Instruments Ltd., for disposal.
DIMENSIONS (mm)
< 43.5 > < 18 >
> < 0.5
> <2.5
13
4 > < 0.38
< 15.24 >
UK
Greenwich Instruments Ltd.,
Meridian House, Park Road,
Swanley, Kent. BR8 8AH
Tele: 08700 505 404
Fax: 08700 505 405
Greenwich Instruments Ltd., are continually developing their products and reserve the
right to alter specifications without prior notice. Standard Terms and Conditions of Sale
GR12883 (128K x 8)
NON-VOLATILE RAM
http://www.greenwichinst.co.uk
ISSUE 3 JAN 2006
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet GR12883.PDF ] | |
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