MCM


Also found in: Dictionary, Thesaurus, Medical, Legal, Acronyms, Idioms, Wikipedia.

MCM

(MultiChip Module or MicroChip Module) A chip package that contains several bare chips mounted close together on a substrate (base) of some kind. The short tracks between the chips increase performance and eliminate much of the noise that external tracks between individual chip packages can pick up. MCM also allows CMOS and bipolar technologies to be used in the same package.

MCMs are classified by substrate: an MCM-C uses a ceramic substrate with wire bonding between the chips. MCM-D uses a dielectric layer over a ceramic, glass or metal substrate, and thin film interconnects are created on the dielectric layer. MCM-S uses a silicon substrate with tracks created in the silicon like regular ICs. Transistors can also be formed in the substrate. MCM-L uses a laminated circuit board with up to 25 tracking layers. MCM-L evolved into the multichip module (see MCP).

MCMs followed "hybrid microcircuits," which used a ceramic base, but MCMs typically have higher component and tracking densities. See system in package, chip package and Trilogy.

MCM

Abbr. for “thousand circular mills.” See wire size.
References in periodicals archive ?
Marine killed during the attack on the Naval Operational Support Center, Chattanooga, TN will speak at the press conference recalling his 2011 MCM run with his son, Marine Staff Sgt.
The Western Aquifer System, which is the largest, has a safe yield of 360 MCM per year (of which 40 MCM brackish).
The MCM is also teaming with A&E Networks to present the newest event during MCM Weekend, the inaugural "Dogs of War" 2K-9 dog-friendly walk/run on the National Mall.
Current uses in Jordan are primarily municipal (260 MCM) and industrial (60 MCM), and agricultural uses (620 MCM), a total of 940 MCM of which is in excess of the renewable resources currently available for use with an average of (630 MCM).
Caprius also announced the appointment of Paul Sparks to the position of Regional Director of Sales for MCM.
SPC has several non-associated gas fields in the Palmyra region which have over 71,000 MCM of reserves and 21 MCM of associated gas (see Gas Market Trends No.
The former MCM Elevator Company focused predominantly on elevator modernization, service and repairs within Vancouver and the surrounding region.
formed a new subsidiary to operate the acquired business of MCM under the same name and in the same location and with the same principals and support staff.
MCM was formed in 1981 and became a Registered Investment Advisor in 1983.
echoed John Orrock, President of OKERE, "Relationship managers without proper MCM spells increased client churn and lost cross-sell/up-sell opportunities.
The media brief will address MCM Weekend security measures, new lottery registration for 2014 and feature runners dedicating their marathon to those who died in the Navy Yard shooting on Sept.