DESCRIPTION
The NX25Mxxx and NX26Mxxx Serial Flash Modules (SFM) provide the benefits of NexFlash’s Serial Flash Memories in an innovative removable package. SFM support capacities of 128KB, 256KB, 512KB, 1MB, 2MB, and 4MB. SFM’s are ideal for microcontroller-based applications, small portable and mobile products, and other resource-limited systems that store data, voice, and images. SFM’s have a space-efficient form factor of 15mm (0.6”) by 45mm (1.8”) that is easy to handle and transport (see Figure 1). Simple electrical contacts, similar to those used in smart cards, provide for a reliable and cost-effective interface to a surface-mount slide-in connector (commonly used in GSM phones). Up to two Serial Flash Memories can be mounted onto the module which is made of standard FR4 Epoxy Glass PCB material.

FEATURES
• Serial Flash Module (SFM)
    – Removable package for Serial Flash Memories
    – 128KB, 256KB, 512KB, 1MB, 2MB, and 4MB-byte capacities
    – Ideal for small portable/mobile products that store voice, images or data
    – Enables unlimited storage, revision updates and capacity upgrades
• Smallest Removable Flash Card
    – Relatively flat 15mm x 45mm (1.8”x 0.6”) form factor. Less than 15% area of PCMCIA Card
• Ultra-low Power and Fast Programming
    – Single 5V or 3V supply for read, Erase/Write
    – As low as 5 mA @3V, less than 1 µA standby
    – Up to 200KB/sec for Erase/Write
• Simple Interface
    – Supports NX25Fxxx SPI (4-pin) or NX26Fxxx NXS (2-pin) interfaces
    – Smart card style self-cleaning connector, only 8-contact pads
    – Device Information Sector allows identification of capacity, voltage and other characteristics
    – Optional electronic serial number
• Reduces Overall System Costs
    – Smaller case, simple PCB, low-cost connector
    – Fewer pins, simple microcontroller
    – Reduced power management, lower battery usage
• Development Support
    – PC-based Development Kit and Software