DESCRIPTION

The XM28C040P is a high density CMOS byte alterable nonvolatile memory array constructed on a cofired ceramic substrate using Xicor’s 128K x 8 components in 32-pad leadless chip carriers. The Substrate is a 66-pin ceramic pin grid array.

FEATURES

? High Density Memory Module

—150ns, 200ns, and 250ns Access Times Available

—4 Megabit Memory in 1 square inch.

? Flexible Multiplane Architecture

—Four Separate Chip Selects

—32 Separate I/Os

? User Configurable I/Os—x8, x16, or x32

? User Configurable Page Size—64 Double words, 128 Words, or 256 Bytes

—Concurrent Read/Write Operations

? Able to Continue Reading During a Nonvolatile Write Cycle.

? 5 Volt Byte or Page Alterable

—No Erase Before Write

? Software Data Protection

? Early End of Write Polling

—DATA Polling

—Toggle Bit Polling

? High Reliability

—Endurance: 100,000 Cycles

—Data Retention: 100 Years