S25FL256LAGNFI013

S25FL256LAGNFI013 is a 256‑Mbit serial NOR flash memory from Spansion/Cypress (S25FL256L family). It provides non-volatile storage for firmware and data in embedded systems, accessed over a serial SPI-compatible interface (standard SPI with support for higher-bandwidth dual/quad I/O read in many variants). Key features typically include page programming (often 256-byte pages), sector/block erase (multiple sizes), security/write-protect options, and low‑power modes including deep power-down. It operates from a single supply in the commonly used 2.7–3.6 V range and supports various temperature ranges per package. The suffix “AGNFI013” describes the specific package, temperature range, and lot/revision for this device.
For exact pinout, timing, voltage, endurance, and command set, refer to the S25FL256L datasheet and the ordering information for S25FL256LAGNFI013.

Equivalent SPI NOR Flash devices (256Mb, 3.3V, 104 MHz, 8-pin):
- Winbond W25Q256JVSSIG
- Macronix MX25L25645GMI-10G
- GigaDevice GD25Q256D
- ISSI IS25LP256D
- Micron N25Q256A13F

Key features of S25FL256LAGNFI013:
- 256 Mbit Serial NOR Flash (32 MB total)
- SPI-compatible interface with multiple modes: standard SPI, Dual I/O, Quad I/O, and QPI
- Single-supply operation: 2.7–3.6 V
- Industrial temperature range: typically -40°C to 85°C
- Memory organization: 256-byte page size; 4 KB sectors; 32 KB and 64 KB blocks; full-chip erase
- Fast read capabilities: up to 104 MHz (SPI); up to 133 MHz in QPI/DIO/QIO modes
- Security and protection: block protection (BP) registers, global protection, OTP area, and 64-bit unique ID
- Power management: Deep Power-Down and standard power-down modes
- Endurance and retention: typically ~100k P/E cycles with ~20+ year data retention
- Features: uniform sector architecture, hardware/software protection, random access
- Package: 8-pin package (SOP/ UW variant as indicated by suffix)

- Pin count: 8 pins (8-pin package)
- Function: 256 Mbit SPI Serial Flash memory. Interfaces via SPI with pins: CS#, CLK, DI (SI), DO (SO), WP#, HOLD#, VCC, GND. Used for storing code/data with read/erase/write/sector erase capabilities.

Manufacturer: Spansion (now part of Cypress Semiconductor).
What kind of company: An American semiconductor company that designs and manufactures flash memory products (NOR serial flash). Spansion originated as a joint venture between AMD and Fujitsu and was later acquired by Cypress.

Application areas for S25FL256LAGNFI013 (256-Mbit SPI NOR Flash):
- Embedded systems: firmware storage, boot memory, OTA/firmware updates
- Automotive and industrial controllers: ECUs, body electronics memory
- Consumer electronics: set-top boxes, printers, cameras, TVs
- Networking gear: routers, switches, modems, gateways
- IoT and wearables: firmware storage, data logging
- Other microcontroller-based devices with nonvolatile code/data storage needs

It uses an 8-pin SOIC (SOIC-8) surface-mount package.