EN25Q40B - 4 Megabit Serial Flash Memory

Product Overview

Eon

Part number	EN25Q40B
Manufacturer	Eon
File Size	2.35 MB
Description	4 Megabit Serial Flash Memory
Datasheet	EN25Q40B Datasheet
Note	This datasheet PDF includes multiple part numbers: EN25Q40B, EN25Q40B-2X. Please refer to the document for exact specifications by model.
Additional preview pages of the EN25Q40B datasheet.

The device is a 4 Megabit (512 K-byte) Serial Flash memory, with enhanced write protection mechanisms.

Single power supply operation - Full voltage range: 2.3-3.6 volt.
Serial Interface Architecture - SPI Compatible: Mode 0 and Mode 3.
4 M-bit Serial Flash - 4 M-bit/512 K-byte/2,048 pages - 256 bytes per programmable page.
Standard, Dual or Quad SPI - Standard SPI: CLK, CS#, DI, DO, WP# - Dual SPI: CLK, CS#, DQ0, DQ1, WP# - Quad SPI: CLK, CS#, DQ0, DQ1, DQ2, DQ3.
High performance - 104MHz clock rate for Standard SPI - 104MHz clock rate for two data bits - 104MHz clock ra.

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Published: Aug 21, 2025 |