Serial EEPROM family uses 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 UNI/O memory-device protocol (refer to USPTO patent number 7,376,020; to be issued on May 20, 2008).
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.
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