STMicroelectronics claims memory density record with low-power 2-Mbit serial EEPROM
The company is claiming the devices will help save build costs and board size for consumer and industrial applications, such as TVs and monitors, flat panels, set-top boxes, printers, smart meters, and also equipment used in medical applications.
The M95M02 provides ultra-high-density storage in the same package outline as lower density alternatives. It also has the same connections and an industry-standard SPI high-speed serial interface, allowing use as a direct replacement or upgrade in established system designs. The device can be operated at voltages as low as 1.8 V and has a standby mode drawing less than 5 uA, making it ideal for use in low-power or battery-operated equipment. Additionally, the SPI interface enables fast communication at up to 5 MHz at 2.5 V. A second new 2-Mbit device, the M24M02, communicates via an industry-standard I2C high-speed interface, operating up to 1 MHz.
Thanks to ST’s advanced proprietary EEPROM process technology, both devices are available in the cost-effective SO8N package, allowing full footprint compatibility with lower equivalent memory densities. Both devices also offer an additional page, named the Identification Page (256 bytes), which can be written and, later, permanently locked in read-only mode. The Identification Page offers flexibility in the application board production line, as it can be used to store unique identification parameters, and/or parameters specific to the production process.
Availability and Pricing
The two new serial ICs join ST’s established EEPROM portfolio, which includes the M95 series (SPI) and M24 series (I2C) offering densities from 1-kbit to 1-Mbit. The 2-Mbit density M95M02 and M24M02 in the SO8N package are sampling now to lead customers, and will be orderable from April 2011 at $1.80 for 1000 units. Alternative pricing options are available for larger quantities.
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