MX25L25645GXDR-08G

MX25L25645GXDR-08G is Macronix’s 256-Mbit serial NOR flash memory in an 8‑pin package. It provides a SPI-compatible interface with optional Quad I/O (QSPI) for higher throughput.
Key points
- Capacity: 256 Mbit (32 MBytes); memory organized for 4 KB sectors and 64 KB blocks; 256‑byte pages for programming.
- Interfaces: standard SPI, with dual/quad I/O fast reads available.
- Voltage and temp: operates at 2.7–3.6 V; end-user variants cover industrial (-40 to 85 C) and other grades.
- Operations: sector erase (4 KB), block erase (64 KB), chip erase; page program up to 256 bytes.
- Features: hardware write protection (WP), status register with WIP bit, JEDEC IDs, security features, power-down and continuous read modes.
- Applications: firmware/boot code storage for MCUs/SoCs, configuration data, automotive/industrial use.
- Packaging/variant: “-08G” indicates accessorial package/temperature options; consult the datasheet for exact electrical characteristics and timing.
For precise timing, voltage, and command-set details, refer to the MX25L25645GXDR-08G datasheet.

Here are the key features of MX25L25645GXDR-08G:
- 256‑Mbit (32‑MB) serial NOR flash
- 2.7–3.6 V operation (3.3 V nominal)
- SPI-compatible interface with standard SPI, plus Dual I/O and Quad I/O read modes
- 256‑byte page size; 4 KB sectors; 64 KB blocks; full‑chip erase
- High‑speed read up to 104 MHz (SPI); higher throughput in DIO/QIO modes
- Deep power‑down and low‑power standby modes
- Write protection and HOLD# features; sector/block protection and security options
- Program/erase suspend and resume
- Endurance ~100k P/E cycles; data retention ~20 years
- 8‑pin package (GXDR variant); industrial temperature option available (−40 °C to +85 °C)
- Applications: boot firmware/storage, code updates, data logging
Note: exact timing/voltage and feature nuances may vary by package/revision; consult the datasheet for precise specs.

8-pin SOP package (SOIC-8).

- Pin count: 8 pins (8-pin package)
- Function: 256-Mbit serial flash memory with SPI/Quad I/O interface. Pins typically include VCC, GND, CS, CLK, and four data I/O pins (IO0–IO3) for command/address/data transfer (read, program, erase, etc.).

- Manufacturer: Macronix International Co., Ltd. (MXIC)
- What kind of company: A Taiwanese semiconductor company that designs and manufactures non-volatile memory ICs (NOR flash, ROM, etc.). It is an integrated device manufacturer (IDM) in the memory business.

MX25L25645GXDR-08G is a 256-Mbit serial flash with dual/quad I/O and QPI. Common applications:
- Boot flash and firmware storage for MCUs/SoCs
- Execute-in-place (XIP) code storage
- OTA firmware updates in consumer electronics
- Data logging and configuration storage in embedded systems
- Primary memory for networking equipment (routers, gateways, switches)
- Used in IoT, industrial, wearable, and set‑top box devices

Equivalent 256 Mb SPI flash parts (drop-in style, check timing/voltage):
- Winbond W25Q256FVSSIG
- GigaDevice GD25Q256D (or GD25Q256C)
- ISSI IS25LP256D
- Puya P25Q256H
- Nuvoton N25Q256A
Notes: voltage window, I/O mode (QPI/Dual/Quad), timing, and JEDEC IDs vary. Verify exact package, speed and electrical specs for a true interchange.