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Embedded-FRAM chip for digital TV

Fujitsu device enables simultaneous use of 4-channel HDMI connector ports

Fujitsu Microelectronics has announced an embedded-FRAM (ferroelectric RAM) for digital TVs that enables simultaneous use of four-channel High-Definition Multimedia Interface (HDMI) connector ports - for connecting devices such as multiple DVD recorders, camcorders, and video game consoles – and which stores display data, such as resolution, that is read by audio-visual digital entertainment devices when they are used with digital TVs. The chip supports the HDMI connector interface specification standard for digital audio-visual equipment and combines, on a single embedded FRAM, the display data memory for four HDMI connector ports, which previously required separate memory for each port. Using this device in digital TVs enables, Fujitsu says, high-speed factory programming of Extended Display Identification Data (EDID). Via an HDMI connection, products that output video or audio, such as DVD players, first read the display data, such as display resolution, and then automatically adjust their output to suit the display.
With this device, display data from a specific HDMI port can be automatically searched, and matching data stored in the FRAM can be automatically converted as output. The memory function for display data, which previously required four E2PROM cells, can now be handled with one cell. By combining the memory for four ports into one high-speed data-writing FRAM block, the time required for the factory programming of data during the production of digital TVs is shortened. Samples of the MB85RF402 are available now.