What Does Multi-Chip Module (MCM) Mean?

A multi-chip module (MCM) is an electronic package consisting of multiple integrated circuits (ICs) assembled into a single device. An MCM works as a single component and is capable of handling an entire function. The various components of a MCM are mounted on a substrate, and the bare dies of the substrate are connected to the surface via wire bonding, tape bonding or flip-chip bonding. The module can be encapsulated by a plastic molding and is mounted on the printed circuit board. MCMs offer better performance and can reduce the size of a device considerably.

Techopedia Explains Multi-Chip Module (MCM)

As an integrated system, an MCM can improve the operation of a device and overcome size and weight constraints.

  • Improved performance as the length of the interconnection between dies is reduced Lower power supply inductance Lower capacitance loading Less crosstalk Lower off-chip driver power Reduced size Reduced time to market Low-cost silicon sweep Improved reliability Increased flexibility as it helps in the integration of different semiconductor technologies Simplified design and reduced complexity related to the packaging of several components into a single device.

MCMs can be manufactured using substrate technology, die attach and bonding technology, and encapsulation technology.

  • MCM-L: Laminated MCM MCM-D: Deposited MCM MCM-C: Ceramic substrate MCM

Some examples of MCM technology include the IBM Bubble memory MCMs, Intel Pentium Pro, Pentium D Presler, Xeon Dempsey and Clovertown, Sony memory sticks and similar devices.