Portable consumer and medical devices including fitness trackers, hearing aids, and glucose monitors as well as industrial, automotive, and other systems often use customer-specific datasets to optimize the consumer experience. These nonvolatile datasets — including calibration constants, background conditions, user preferences, and changing noise environments — often are adjusted by the end system or user a few bytes at a time. Serial electrically erasable programmable read-only memory (EEPROM) is the memory of choice for these applications, providing nonvolatility, byte-level control, ease of use, and low power consumption. Microchip Technology Inc. has announced its new, highest-density EEPROM — the 25CSM04.

At 4 Mbits, Microchip’s new EEPROM becomes the largest EEPROM available to developers, doubling the 2-Mbit density to which designers previously were limited. Until now, developers have used lower-cost NOR flash integrated circuits for any 2-Mbit+ nonvolatile dataset application. Because EEPROM offers performance advantages over NOR flash, Microchip has responded to customer requests by introducing a larger 4-Mbit EEPROM. EEPROM advantages include a lower standby current (2 µA versus 15 µA); the ability to perform single-byte, multi-byte, and full-page writes; shorter sector erase/rewrite times (5 ms versus 300 ms); and more erase/rewrite cycles (1M versus 100K).

“Pushing the top end of what is possible with serial EEPROM supports product innovation,” said Randy Drwinga, vice president of Microchip’s memory products division. “Designers can now reevaluate their systems and leverage this new technology to optimize design performance.”

The 25CSM04 becomes part of Microchip’s extensive nonvolatile memory product portfolio that integrates within Microchip’s total system solutions built around its 8-bit, 16-bit, and 32-bit microcontrollers and microprocessors. Microchip’s extensive memory product family includes serial EEPROMs, NOR flash, SRAM, and EERAM in all standard serial buses and all standard densities from 128 bits to 64 Mbits.

As a technology innovator in serial EEPROM for more than 30 years, Microchip delivers approximately 1 billion EEPROM devices annually.

Microchip’s 4-Mbit serial EEPROM devices are supported by the MPLAB Starter Kit for Serial Memory Products. The kit includes a serial memory interface board, serial EEPROM starter pack, USB cable, CD containing the MPLAB X Integrated Development Environment (IDE), Total Endurance software model, and a serial EEPROM interface tool.

The 25CSM04 family of memory devices is available in three package options starting at $2.32 in 10,000-unit quantities. For additional information, contact a Microchip sales representative or authorized worldwide distributor, or visit Microchip’s website. To purchase products mentioned here, visit our purchasing portal or contact a Microchip authorized distributor.

Source: Electronics and Electrical Engineering News