Memory devices

This local wiki article holds a few notes and details about NOR flash memory manufacturers, plus some specific parts in the memory size range of 8Mbit to 128Mbit. Before getting into specific parts, a couple of articles by Avinash Aravindan on NAND and NOR based flash memory types:

• https://www.embedded.com/flash-101-nand-flash-vs-nor-flash/
• https://www.embedded.com/flash-101-the-nor-flash-electrical-interface/

Note: there are five or six articles by the author of the two above linked flash memory articles. These are really good articles in their overviews, comparison of NAND and NOR flash memory types, and technical detail.

Specific Memory Parts

^ Macronix

Macronix International manufactures some 8Mbit FLASH NOR memory devices:

• https://www.arrow.com/en/products/mx25r8035fbhih2tr/macronix-international

https://static6.arrow.com/aropdfconversion/ae5e1f686626b324b1c1e8b308eed2526a2c94b7/696967906230222mx25r8035f20wide20range208mb20v1.6.pdf

^ Microchip

Microchip memory devices:

• https://www.microchipdirect.com/product/SST25VF016B-50-4C-S2AF
• https://www.microchip.com/wwwproducts/en/SST25VF016B . . . good summary, links to more details and datasheet
An excerpt:

16Mb 2.7-3.6V SPI Serial Flash

Status: In Production
Features:

    Serial Interface Architecture– SPI Compatible: Mode 0 and Mode 3
    Up to 50 MHz Clock Frequency
    Superior Reliability– Endurance: 100,000 Cycles (typical)– Greater than 100 years Data Retention
    Low Power Consumption:– Active Read Current: 10 mA (typical)– Standby Current: 5 µA (typical)
    Flexible Erase Capability– Uniform 4 KByte sectors– Uniform 32 KByte overlay blocks– Uniform 64 KByte overlay blocks
    Fast Erase and Byte-Program:– Chip-Erase Time: 35 ms (typical)– Sector-/Block-Erase Time: 18 ms (typical)– Byte-Program Time: 7 µs (typical)

A part alternate to the MX...8035, two parts by Microchip. On Microchip's site there is mention that the SST26 prefixed part is recommended over the SST25, but did not see mention of end-of-life or other obsolescence at their site. Following are 16Mbit (2 Mbyte) and an 8Mbit (1 Mbyte) NOR flash memory:

• https://www.microchip.com/wwwproducts/en/SST26VF016B
• https://www.newark.com/microchip/sst26vf016b-104i-sn/flash-memory-16mbit-40-to-85deg/dp/83X6013?st=nor%20flash
• https://www.newark.com/microchip/sst26vf080a-104i-sn/flash-memory-8mbit-40-to-85deg/dp/67AH4683?st=nor%20flash

^ ISSI

NOR flash part IS25LP064A-JBLE made by ISSI:

• https://www.newark.com/integrated-silicon-solution-issi/is25lp064a-jble/nor-flash-memory-64mbit-133mhz/dp/52Y1847?st=nor%20flash

This paragraph a starting point for information about the company ISSI. Present board members as of 2021 Q2 posted at https://www.issi.com/US/board-members.shtml.

^ Cypress

• S25FL127SABNFI101 127Mbit NOR flash, https://www.newark.com/cypress-semiconductor/s25fl127sabnfi101/memory-flash-nor-128mbit-spi-uson/dp/97W1394

^ Accelerometers (section to be organized into own page)

• https://www.digikey.com/en/products/detail/analog-devices-inc./EVAL-ADXL1003Z/9739525

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