MX25U25635FMI-10G

MX25U25635FMI-10G is Macronix’s 256-Mbit serial NOR flash memory (32 MB) with an SPI-compatible interface. It’s designed to store code and data for microcontrollers and embedded systems.
Key points:
- Interface: Standard SPI with optional Dual I/O and Quad I/O (DQ) modes for higher throughput.
- Voltage and speed: 2.7–3.6 V operation; up to 104 MHz clock in SPI modes.
- Organization and erase: 32 MB array; erase in 4 KB sectors, 32 KB and 64 KB blocks, plus full-chip erase.
- Programming: Page program (typical 256 bytes per write).
- Power: supports deep power-down and low-power modes.
- Security: write protection, block locking, and non-volatile security registers.
- Commands: Read, Fast Read, Page Program, Sector/Block Erase, Write Enable/Disable, Deep Power-Down, Release from Power-Down, etc.
- Applications: boot flash, code storage, data logging in embedded systems.
The -10G suffix indicates the speed/variant. For exact timings, voltages, pinout, and command set details, consult the MX25U25635FMI-10G datasheet.

Common cross-references for MX25U25635FMI-10G (256 Mbit SPI NOR, 3.3V):
- Winbond W25Q256FV / W25Q256JV
- GigaDevice GD25Q256CSIG
- Micron N25Q256A
- Spansion/Cypress S25FL256SAGMFI
- ISSI IS25LP256D
- Macronix MX25L25635F
Note: verify package, voltage, timing and IO modes (Dual/Quad/QPI) for exact compatibility.

Here are the key features of MX25U25635FMI-10G (8-pin serial SPI flash):
- 256 Mb (32 MB) of serial flash memory.
- SPI-compatible with dual I/O and quad I/O (DQ0–DQ3) read support.
- 4-byte addressing mode for >16 MB access.
- Page programming: 256-byte pages.
- Erase options: 4 KB sectors; 32 KB and 64 KB blocks; chip erase.
- High-speed read: standard SPI up to high clock; Quad I/O read available for faster throughput.
- Endurance: typically 100k program/erase cycles.
- Data retention: typically 20 years.
- Operating voltage: 2.7–3.6 V.
- Temperature grade: -40°C to +85°C (industrial/extended temp version).
- Power features: deep power-down mode and low standby current.
- Security/controls: WP# and HOLD# pins for protection and control.
- Package: 8-pin package (e.g., SO8/USON8) with CS, CLK, DI, DO, WP, HOLD, VCC, GND.

Pin count: 8 pins (standard 8-pin SOIC/SMD package).
Function: 256-Mbit Serial NOR Flash with SPI interface (non-volatile memory). Pin functions (typical 8-pin layout):
- Pin 1: CS# — Chip Select (active low)
- Pin 2: DO (MISO) — Data Out
- Pin 3: WP# — Write Protect (active low)
- Pin 4: GND — Ground
- Pin 5: DI (MOSI) — Data In
- Pin 6: CLK — Serial Clock
- Pin 7: HOLD# — Hold (active low)
- Pin 8: VCC — Power Supply
Notes: Signals CS#, WP#, and HOLD# are active low. This device is used for non-volatile storage in SPI systems.

Manufacturer: Macronix International Co., Ltd. (MXIC).
Macronix is a Taiwanese semiconductor company that designs and manufactures non-volatile memory products (notably NOR flash) and other integrated circuits, serving as a global supplier of memory solutions.

MX25U25635FMI-10G is a 256‑Mbit SPI flash memory used to store firmware and nonvolatile data in embedded systems. Typical applications:
- Boot ROM/firmware storage and updates for MCUs/SoCs in consumer electronics (set‑top boxes, smart TVs, printers, game consoles)
- Firmware/storage for networking equipment (routers, switches, modems)
- Nonvolatile code/data storage in industrial/automation equipment and PLCs
- IoT/edge devices requiring persistent firmware
- Development/prototyping boards needing larger code space

8-pin SOP (SOIC-8) package, RoHS-compliant.