MX25L25645GXDR-08G

MX25L25645GXDR-08G is Macronix’s 256‑Mb serial NOR flash memory in an 8‑pin package. It provides 32 MB of nonvolatile storage accessible over a SPI-compatible interface, with optional Dual/Quad I/O (DIO/QIO) modes for higher throughput.
Key points:
- Density and organization: 256‑Mbit (32 MB); 256‑byte pages; 4 KB/32 KB/64 KB erase blocks; supports sector, block, and chip erase.
- Interface and speed: Standard SPI plus Dual/Quad I/O SPI; high‑speed read up to roughly 104–133 MHz depending on mode.
- Power and range: 2.7–3.6 V operation; low‑power modes including deep power‑down; industrial temperature range (-40°C to 85°C) for GXDR.
- Security: Write enable latch, status and protection registers, and block protections.
- Applications: firmware storage and updates, boot memory, data logging in embedded systems.
In short, a dense, flexible SPI/NOR flash suitable for robust firmware storage in MCUs and embedded devices.

Equivalent 256Mb SPI NOR Flash parts (3V, 8-SOP/QFN family):
- Winbond W25Q256FV / W25Q256JV
- GigaDevice GD25Q256CSIG / GD25Q256D
- ISSI IS25LP256D
- Spansion S25FL256SAGMFI
Note: verify package (SOP8), voltage, and timing to ensure true cross-compatibility.

Concise features of MX25L25645GXDR-08G:
- 256 Mbit (32 MB) serial flash memory
- 2.7 V – 3.6 V supply (3.3 V nominal)
- SPI interface: Standard, Dual I/O, Quad I/O; supports QPI/read
- 4-byte address mode for full capacity addressing
- Memory organization: 256-byte page size; 4 KB sectors; 32 KB and 64 KB blocks; chip erase
- Program/Read: Page program up to 256 bytes; fast read with dummy cycles; supports multi I/O reads
- High-speed operation with suitable clock rates for SPI/Dual/Quad modes
- Low power: Deep Power-Down mode with wake-up
- Security/protection: hardware write protection, block/sector protection options, status register protections
- Identification: standard device ID and unique ID support
- Pins/pacakge: 8-pin package variant (GXDR-08G)
- Temperature range: industrial operation typical (-40°C to 85°C)
Note: exact clock speeds and some mode details vary by mode (Standard vs Dual/Quad/QPI) and are defined in the datasheet.

- Pin count: 8 pins (8-pin package, e.g., SO8)
- Function: 256-Mbit serial SPI NOR flash memory. Pins:
- 1: CS#
- 2: DO (MISO)
- 3: WP#
- 4: GND
- 5: DI (MOSI)
- 6: CLK
- 7: HOLD#
- 8: VCC
Active-low signals: CS#, WP#, HOLD#.

- Manufacturer: Macronix International Co., Ltd. (Macronix)
- What kind of company: A Taiwan-based semiconductor company that designs and manufactures non-volatile memory products (NOR and NAND flash) and other memory solutions for embedded systems and consumer electronics.

MX25L25645GXDR-08G is a 256-Mbit serial flash memory suitable for nonvolatile storage in embedded systems. Common application areas include:
- Boot flash and program/storage for microcontrollers/SoCs in consumer electronics, industrial controllers, and networking gear
- Firmware storage and field/OTA updates
- Configuration data, calibration data, and data logging in industrial and IoT devices
- FPGA/ASIC configuration bitstreams and supplementary code storage
- Automotive ECUs, infotainment, and telematics devices
- IoT devices, smart meters, wearables, and medical equipment requiring reliable nonvolatile storage

8-pin USON (leadless) package.