Microchip Announces Serial EEPROM Family Using New Single I/O Bus
Microchip has announced a new family of serial EEPROM devices with a single I/O bus 
interface. The devices are based on Microchip's patent-pending UNI/O memory-device protocol.
The 11XX010, 11XX020, 11XX040, 11XX080 and 11XX160 are the first single I/O EEPROM devices that can support data rates from 10 kHz to 100 kHz; and the only 1, 2, 4, 8 and 16 Kbit EEPROMs available in a 3-pin SOT-23 package (in addition to other higher pin count packages). The new devices also include advanced such as status registers; software write protection for ¼, ½ or full array; noise filtering, and robust ESD protection for the highest reliability.
The UNI/O bus and EEPROM devices were developed in response to market trends toward smaller consumer-electronic products with more features and functionality. With this new bus, only one I/O pin is needed for communication between the EEPROM device and the microcontroller (MCU).
Evaluation is simplified because the UNI/O memory devices are available in 8-pin packages with pin-outs that overlay any standard I2C or SPI EEPROM socket. This means that existing hardware can be used with the available UNI/O software drivers for a quick test.
The UNI/O memory devices are supported by the new MPLAB Starter Kit for Serial Memory Products (Part number DV243003, microchipDIRECT price $79.98), the MPLAB PM3 Universal Device Programmer (Part number DV007004, microchipDIRECT price $895) and by software drivers available for Microchip's PIC MCUs at http://www.microchip.com/. Drivers for other MCUs will be available in the future.
The new devices are offered in two versions-the 11LCXX0 versions operate from 2.5V to 5.5V, and the 11AAXX0 versions operate from 1.8V to 5.5V. All of the new memory devices are available in 3-pin SOT-23 as well as 8-pin PDIP, MSOP, SOIC and 2x3mm TDFN packages.
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