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New 4Mbit Serial EEPROM Memory Chips From ST


The M95M04 offers fast write times via SPI and data retention of 40 years


STMicroelectronics has released a new generation of memory chips that combine unprecedented storage density with speed and reliability, enabling the devices we use every day to do more to enrich life and work.

With 4Mbit capacity, ST’s new EEPROM memories let small devices capture and store more data through the serial SPI bus. This enables equipment such as smart meters to intensify data logging for managing grids more effectively and providing more user-friendly billing. Also, portable medical devices can log patients’ data more intensively to improve care quality, and consumer devices such as smart wearables can support more user features and greater precision. In these applications, the memory’s low power consumption helps extend battery runtime. A wide range of applications in industrial controls and communication infrastructure such as network switches can also benefit from these higher density memories.

“ST is recognized as the world leader in serial EEPROM chips, which are widely used across consumer, industrial, and automotive applications, and we continue to drive technical innovation,” said Benoit Rodrigues, Memory Division General Manager, STMicroelectronics. “The market’s first 4Mbit EEPROM devices are produced in our own CMOS technology, which is now qualified at 110nm as the most advanced in the industry for EEPROMs.”

ST’s M95M04 EEPROM memories combine their unprecedented data storage with excellent energy efficiency for budget-conscious applications. They extend ST’s wide portfolio recognized for high reliability, lasting one billion full-memory read-write cycles. Capable of writing 512 Bytes in 5ms, the new devices enable fast system operation with low latency.

Technical Specifications of the M95M04 Serial EEPROM

  • Compatible with the serial peripheral interface bus (SPI)
  • Memory Array
    • 4 Mbit (512 Kbytes) of EEPROM
    • Page size: 512 bytes
    • Additional write lockable page (Identification page)
  • Write Time
    • Byte Write within 5 ms
    • Page Write within 5 ms
  • Write Protect
    • quarter array
    • half array
    • whole memory array
  • Max Clock Frequency: 10 MHz
  • Single Supply Voltage: 1.8 V to 5.5 V
  • Operating temperature range: from -40 °C up to +85 °C
  • More than 4 million Write cycles
  • More than 40-year data retention

The M95M04 is currently available in a SOIC8 and TSSOP8 Package. A 8-bit WLCSP chip-scale package will be available soon. All parts are available in tape and reel packaging from STMiroelectronics.

For more information on the M95M04 4Mb Serial EEPROM, visit the ST Web site at M95M04 product page.


The company's Web site address is www.st.com.
[Reprinted with kind permission from STMicroelectronics - Release Date, 21st November, 2019]