256K Legacy PROM Customer Letter (8/02)

August 1, 2002
Dear Customer:
Aeroflex UTMC Microelectronic Systems Inc. (UTMC) appreciates your interest and use of our
products, specifically the RadHard Family of PROMs. The purpose of this letter is to inform you
that UTMC is migrating the 256K RadHard PROM, both 3 and 5 volt versions (Standard
Microcircuit Drawings 5962-96891 and 5962-01517), to a new wafer fabrication facility.
Production devices from the new facility will begin shipping late in the third quarter of 2003 (i.e.,
September 2003). The new 256K PROM products are designed to be a direct replacement to the
existing products currently in QML Q and V production. As a result of the wafer foundry and
process change (1.5µm to 0.35µm CMOS), differences in AC electrical performance were
unavoidable. UTMC will keep you apprised of performance differences as they are identified via
written notification and the web-site (www.utmc.com). UTMC will continue to offer RadHard
256K PROM in a 28-lead flatpack (FP); however, due to the lack of demand, UTMC has chosen
not to re-tool the 36-pin DIP package for the PROM.
UTMC has sufficient die inventory to yield approximately 800 to 1000 finished good units. The
inventory of the existing 256K PROM is being offered to customers on a “first come, first serve”
basis. All purchase orders will require delivery within 24 weeks of receipt and acceptance of
purchase order. Additionally, UTMC will decline all requests for single lot date code shipments
until the foundry migration is complete. UTMC plans to cease shipping product built from the old
mask set once qualification of the migrated version is complete. We expect to use the same
SMD number (5962-96891 and 5962-01517) with new device types.
If you have any questions please contact me at (719) 594-8252 or [email protected]
Anthony F. Jordan
Director of Standard Products
Aeroflex UTMC Microelectronic Systems Inc.