Greenwich Instruments 64kbit 70ns NVRAM, 28-Pin PDIP, GR881-HT

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Unavailable
RS will no longer stock this product.
Packaging Options:
RS Stock No.:
200-6577
Mfr. Part No.:
GR881-HT
Brand:
Greenwich Instruments
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Brand

Greenwich Instruments

Memory Size

64kbit

Organisation

8K x 8 bit

Interface Type

Parallel

Data Bus Width

8bit

Maximum Random Access Time

70ns

Mounting Type

Through Hole

Package Type

PDIP

Pin Count

28

Dimensions

37 x 18 x 7.3mm

Length

37mm

Width

18mm

Height

7.3mm

Maximum Operating Supply Voltage

5.5 V

Maximum Operating Temperature

+85 °C

Minimum Operating Supply Voltage

4.75 V

Number of Bits per Word

8bit

Minimum Operating Temperature

-40 °C

Number of Words

8K

COO (Country of Origin):
GB
The GR881 is an industrial temperature range 8192 word by 8 bits (8k x 8) non-volatile static RAM fabricated from advanced silicon gate CMOS technology and a high reliability lithium power cell.

The 28W dil pinout of the GR881 conforms to the JEDEC standards and is fully compatible with normal static RAM.

The power down circuit is fully automatic and is referenced at 4.5V. At this point the GR881 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 15 microseconds to power down from 5V to 0V. This is much faster than any system power failure conditions; therefore there are no special conditions required when installing the GR881.

The GR881 can, without external power, retain data almost indefinitely; the limiting factor being the shelf life of the lithium power cell, typically 10 years.

ROHS Compliant

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