Serial EEPROM Supporting ACR SIG
The new 24LC09 serial EEPROM features a non-standard address that allows a computer to automatically detect and configure riser cards for industry-standard Plug-and-Play capability. The system bios of an ACR-compatible PC can communicate with the riser card, making it completely transparent to the computer's operating The 24LC09 meets the ACR SIG specification as a custom 8K I2C device, address of 1011xxx, 2.5 V to 5.5 V operating voltage, and -40 °C to +85 °C industrial temperature range.
The next-generation PC Audio Modem Riser cards provide intelligent modem, audio and network capabilities in a single card, eliminating the need for multiple cards and providing reduced system cost and space savings. Applications for the 24LC09 include PC Audio Modem Riser cards supporting modems, Local Area Networks (LANs), Wide Area Networks (WANs), Digital Subscriber Line (DSL), audio technologies and future wireless bus technologies.
The 24LC09 is the latest in a series of serial EEPROM innovations for identification in Plug-and-Play systems. Microchip offers Plug-and-Play to the DIMM module market with the 24LCS52, a special function single-chip EEPROM that is available in space saving packages. For Plug-and-Play video monitor applications, Microchip offers a complete family of single-chip DDCä1/DDCä2-compatible solutions, including the popular 24LC21 and 24LCS21A. For board identification, the 24LCS61 provides software address capability of up to 255 devices on the same bus, eliminating I2C board limitations and allowing flexible plug-and-play configuration of components.