Static information storage and retrieval – Read only systems
Reexamination Certificate
2007-07-31
2007-07-31
Nguyen, Van Thu (Department: 2824)
Static information storage and retrieval
Read only systems
C365S154000, C365S104000
Reexamination Certificate
active
11132799
ABSTRACT:
A method of programming a radiation-hardened integrated circuit includes the steps of supplying a prototype device including an SRAM memory circuit or programmable key circuit to a customer, having the customer develop working data patterns in the field in the same manner as a reading and writing to a normal RAM memory, having the customer save the final debugged data pattern, delivering the data pattern to the factory, loading the customer-developed data pattern into memory, programming the customer-developed data pattern into a number of production circuits, irradiating the production circuits at a total dosage of between 300K and 1 Meg RAD to burn the data pattern into memory, and shipping the irradiated and programmed parts to the customer.
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Gardner Harry N.
Kerwin David
Aeroflex Colorado Springs Inc.
Hogan & Hartson LLP
Kubida William J.
Meza Peter J.
Nguyen Dang
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