Renesas / Dialog AT25PE40 Series Serial Flash Memory

Renesas / Dialog AT25PE40 Series Serial Flash Memory is a 4-Mbit DataFlash-L, 1.65V minimum, and serial-interface sequential access page erase memory. This AT25PE40 series memory device features 4,194,304 bits of memory organized as 2,048 pages of 256 bytes or 264 bytes each. The AT25PE40 series operates from a single 1.65V to 3.6V power supply for the erase, program, and read operations. The flash memory contains two SRAM buffers of 256 or 264 bytes each, in addition to the main memory. These buffers allow receiving of data while a page in the main memory is being reprogrammed. The AT25PE40 series is ideally suited for a wide variety of digital voice, image, program code, and data storage applications.


  • Single 1.65V to 3.6V supply
  • Serial Peripheral Interface (SPI) compatible
    • Supports SPI modes 0 and 3
    • Supports RapidS™ operation
  • Continuous read capability through an entire array
    • Up to 85MHz
    • Low-power read option up to 15MHz
    • Maximum Clock-to-output time (tV) of 6ns
  • Flexible programming options
    • Byte or page program (1 to 256 or 264 bytes) directly into main memory
    • Buffer Write
    • Buffer to the main memory page program
  • 20 years of data retention
  • Complies with a full industrial temperature range


  • 40ºC to 85ºC operating temperature range
  • 1.65V to 3.6V VCC power supply
  • 70MHz (maximum) serial clock frequency
  • 15ms typical page erase and programming time (256 or 264 bytes)

AT25PE40 Block Diagram

Block Diagram - Renesas / Dialog AT25PE40 Series Serial Flash Memory
Veröffentlichungsdatum: 2017-10-26 | Aktualisiert: 2023-04-20