S25FL256SAGBHIA10

The S25FL256SAGBHIA10 is a 256-Mbit serial NOR flash memory from Cypress/Spansion. It provides high-density, nonvolatile storage with a serial SPI interface and, in some modes, Quad I/O/QPI for higher throughput.
Key points:
- Capacity: up to 256 Mbit (32 MB); uses 4-byte addressing to access the full array.
- Interface: SPI-compatible; supports higher-throughput modes (Quad I/O/QPI) depending on mode.
- Operations: standard reads and fast reads; page programming (typically 256 bytes); sector/block erases (e.g., 4 KB and 64 KB); bulk erase.
- Features: low-power modes (including deep power-down); security options and OTP/Protection features.
- Applications: firmware/boot memory and code storage for MCUs, SoCs, and embedded systems.
- Packaging/grade: commonly in an 8-pin package; IA10 variant indicates particular packaging/industrial temperature grade.
For exact voltage, timing, endurance, and mode details, consult the official datasheet for the IA10 variant.

Equivalent 256-Mbit SPI NOR flash devices (same interface/arch) include:
- Winbond W25Q256JV/W25Q256FV
- Macronix MX25L25645G / MX25L25645GMI
- Micron N25Q256A / N25Q256A11
- GigaDevice GD25Q256D
- ISSI IS25LP256D
- STMicro M25P256
Note: check exact voltage, package, and timing to ensure full compatibility.

- Pin count: 8 pins (8-pin SOIC/SMALL-OUT-8 package).
- Function: 256-Mbit serial NOR flash memory with SPI interface. Key pins: CS (chip select), SCK (clock), SI (MOSI), SO (MISO), VCC, GND, WP# (write protect), HOLD#. Pinout (typical): 1 CS, 2 SO, 3 WP#, 4 GND, 5 SI, 6 SCK, 7 HOLD#, 8 VCC.

Manufacturer: Spansion Inc. It is a semiconductor company that specialized in flash memory and embedded memory solutions (originating as a joint venture of AMD and Fujitsu; later acquired by Cypress Semiconductor and now part of Infineon Technologies).

Applications of S25FL256SAGBHIA10:
- Firmware storage and boot flash for microcontrollers/SoCs
- Code shadowing and non-volatile storage in embedded systems
- Field-updatable firmware (OTA) and recovery in IoT, consumer electronics, and networking devices
- Automotive and industrial control systems needing reliable high-density flash for program memory and configuration data
- Peripherals (printers, set‑top boxes, cameras, etc.) using high-density SPI NOR flash for firmware and data storage

8-pin SOIC (small‑outline) package.