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Microchip Technology SST25WF040B/80B SPI Serial Flash Memory

Microchip Technology SST25WF040B/80B SPI Serial Flash Memory chips are designed with a four-wire, SPI-compatible interface that allows for a low pin-count package. These serial flash occupy minimum board space and lowers total system costs. The SST25WF040B/80B serial flash memory chips are manufactured using high-performance CMOS SuperFlash technology. To attain better reliability, these serial flash chips have a split-gate design and a thick-oxide tunneling injector. 

The SST25WF040B/80B serial flash memory writes (program or erase) with a single power supply of 1.65V to 1.95V. These serial flash chips utilize SuperFlash technology to consume less current to program and a shorter erase time. This reduces the total energy consumption during any erase or program operation. Microchip Technology SST25WF040B/80B SPI Serial Flash Memory chips are available in 8-lead SOIC and 8-contact USON packages.

Features

  • Serial interface architecture:
    • SPI compatible
    • Mode 0 and Mode 3
  • Dual input/output support:
    • Fast-read dual-output instruction (3BH)
    • Fast-read dual I/O instruction (BBH)
  • End-of-write detection, resulting in software polling the BUSY bit in status register
  • Hold pin (HOLD#) suspends a serial sequence without deselecting the device
  • Write protection (WP#) enables/disables the lock-down function of the status register
  • Write protection through block-protection bits in status register
  • Packages available:
    • 8-lead SOIC (150 mils)
    • 8-contact USON (2mm x 3mm)
  • RoHS compliant

Specifications

  • 1.65V to 1.95V single voltage read and write operations
  • 40MHz high-speed clock frequency
  • Superior reliability:
    • 10,0000 cycles
    • >20 years data retention
  • Ultra-low power consumption:
    • 4mA active read current
    • 7µA standby current
    • 2µA power-down mode standby current
  • Flexible erase capability:
    • Uniform 4KB sectors
    • Uniform 64KB overlay blocks
  • Page program mode:
    • 256bytes/pg
  • Fast erase and page-program:
    • 400ms chip-erase time
    • 40ms sector-erase time
    • 80ms block-erase time
    • 0.8ms/256bytes page-program time
  • -40°C to +85°C industrial temperature range
  • -40°C to +125°C extended temperature range

Functional Block Diagram

Block Diagram - Microchip Technology SST25WF040B/80B SPI Serial Flash Memory

Additional Resources

Publié le: 2019-01-23 | Mis à jour le: 2023-05-11