S25FL256LAGNFM010

S25FL256LAGNFM010 is a 256‑Mbit Serial NOR Flash memory from Spansion/Cypress. It provides non‑volatile storage for firmware and data in embedded systems and is accessed via an SPI interface with support for standard SPI and Quad I/O/QPI, using 4‑byte addressing for large maps. Organized as roughly 32 MB, it supports typical flash operations: sector erases (4 KB), block erases (64 KB/256 KB), page programs (often 256 bytes), and chip erase, plus fast read and deep power‑down modes. A write‑enable command and status/config registers are used to manage operations. Power supply and temperature ranges depend on the variant; 2.7–3.6 V is common, with industrial temp options available. The NM010 suffix denotes a particular package/temperature variant. For exact electrical specs, timing, command set, and package options, consult the official S25FL256LAGNFM010 datasheet.

Equivalent SPI NOR flash devices (256 Mbit, same SPI interface, similar voltage/pinout):
- Winbond W25Q256JV / W25Q256FV
- Macronix MX25L25635F / MX25L25645G
- GigaDevice GD25Q256C
- STMicroelectronics M25P256
- ISSI IS25LP256D
Note: always verify exact package, voltage (3V3), timing, and Quad/Dual IO mode when cross‑referencing.

Here are the key features of S25FL256LAGNFM010:
- 256-Mbit serial flash memory
- Low-voltage operation: 1.65–1.95 V (I/O) (1.8 V family)
- SPI-compatible interface with Dual I/O, Quad I/O and QPI support
- 4-byte addressing for full address space
- Memory organization: 256-byte pages; 4 KB sectors; 32/64 KB blocks; chip erase
- Fast read modes: up to 104 MHz SPI; higher speeds with Quad I/O/QPI
- Page program time ~5 µs; erase times per sector/block
- Deep power-down mode and wake-up; low-power standby
- Endurance about 100,000 program/erase cycles; data retention ≥20 years
- Security features: block-protect (BP) regions; WP# and HOLD# pins
- Operating temperature: -40 °C to 85 °C
- Packaging: 8-pin package (AGNFM010 family)

Pin count: 8 pins (8-pin package such as SOIC-8/WSON-8).
Function: 256‑Mbit Serial NOR flash memory (SPI interface) used for non-volatile storage of firmware/data; supports SPI (and typically dual/quad SPI modes on capable configurations).

Manufacturer: Spansion (now part of Cypress Semiconductor).
What kind of company: A US-based semiconductor company that designs and manufactures flash memory products; originally a joint venture between AMD and Fujitsu, now under Cypress.

- Boot/firmware memory for microcontrollers and SoCs
- Code and data storage for embedded systems (consumer electronics, routers, set-top boxes, printers, cameras, IoT)
- Data logging and local file storage in industrial equipment
- OTA firmware updates and secure boot support
- General-purpose, high-density non-volatile storage for devices needing large, fast SPI flash

8-pin small-outline package (SOIC).