--- type: product schema_version: 1 stock_number: "64576-1" canonical_url: "https://www.artisantg.com/64576-1/Seiko-Epson-LWB257SX20" json_url: "https://www.artisantg.com/64576-1/Seiko-Epson-LWB257SX20.json" generated_at: "2026-11-07T23:22:20.369Z" last_updated: "2026-10-14T13:00:51.160-05:00" --- # Seiko Epson LWB257SX20 256KB PCMCIA SRAM Card _Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._ ## Summary - Manufacturer: Seiko Epson - Model: LWB257SX20 - Condition: Used and in Excellent Condition - Price: Quote only - Availability: Not in Stock - Warranty: 1-Year Warranty with 30-Day Return Guarantee - ITAR restricted: No - Shipping weight: 1 lb, estimated - Shipping dimensions: 8X8X3 in, estimated ## Categories - Test Equipment > Electrical Test > RAM (primary) - Military and Embedded Equipment > Embedded & Industrial > PCMCIA ## Overview High-speed 256KB static RAM storage module utilizing PCMCIA Type I interface for volatile data storage in portable computing applications. Features 5V operation with 16-bit data bus supporting 250ns access time. Implements standard PC Card ATA protocol with 68-pin connector enabling hot-swapping capability. Interfaces directly with PCMCIA-compliant host controllers in laptops, handheld computers, and industrial terminals. Provides battery-backed data retention for system memory expansion, program storage, and data logging applications. Commonly deployed in legacy DOS-based portable systems, embedded controllers, and field service equipment requiring removable volatile storage. ## Function Non-volatile memory storage device utilizing static random access memory technology for data retention without continuous power supply. Provides 256 kilobytes of high-speed read/write memory storage through PCMCIA Type I interface standard. Operates as removable storage media for portable computing devices, industrial controllers, and embedded systems requiring reliable data storage. Features low power consumption characteristics suitable for battery-powered applications. Supports hot-swappable installation and removal without system shutdown. Maintains data integrity through battery backup or flash memory technology during power cycling operations. ## Platform This equipment provides 256KB of high-speed, battery-backed static random-access memory for non-volatile data storage and rapid read/write operations. It is designed for operation within systems equipped with a 68-pin PCMCIA (PC Card) slot, typically found in legacy laptops, industrial control systems, and specialized embedded devices. It interfaces directly with the host bus, offering memory-mapped access for applications such as data logging, configuration storage, and temporary program execution. ## Application Provides non-volatile solid-state memory expansion for legacy embedded systems, industrial computers, and portable devices requiring PCMCIA Type II compatibility. Used in data logging applications, firmware storage, configuration parameter retention, and temporary data buffering in battery-powered instruments. Enables memory augmentation for older laptop computers, handheld terminals, measurement equipment, and control systems where compact removable storage with instant access and low power consumption is essential for field operations. ## Accessories PCMCIA Type II slot or adapter for host device compatibility, protective carrying case for storage and transport, writable label for card identification. ## Interface PCMCIA 68-pin Type I/II, SRAM 256KB ## Images - - - -