4 Megabit Puma Module XM28C040P 512K x 8 Bit High Density 5 Volt Byte Alterable Nonvolatile Memory Array FEATURES DESCRIPTION • 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 Doublewords, 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 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. The module is configured with four separate chip enable and write enable inputs and 32 separate I/Os. This, along with the small footprint, provides the end user with a large degree of flexibility in board layout and memory configuration. In addition, with the large number of pins and the growth path being implemented, the module will be able to grow to 16 megabits. FUNCTIONAL DIAGRAM OE WE1 CE1 128K x 8 A0-A16 I/O0-I/O7 Xicor, 1995, 1996 Patents Pending 7053 8/13/97 T0/C0/D0 SH WE2 CE2 WE3 CE3 128K x 8 128K x 8 I/O8-I/O15 1 I/O16-I/O23 WE4 CE4 128K x 8 I/O24-I/O31 Characteristics subject to change without notice XM28C040P PIN CONFIGURATION 1 12 23 34 45 56 I/O8 WE2 CE2 I/O22 VCC I/O9 A10 I/O14 I/O23 A10 I/O28 I/O10 GND I/O13 I/O24 WE4 I/O27 NC I/O11 I/O12 A7 CE4 I/O25 I/O26 A16 OE A11 A12 A4 A1 A9 A8 I/O3 NC/VBB A5 A2 A0 A15 WE1 A14 NC VCC CE A13 WE3 I/O0 A10 I/O7 I/O15 A10 I/O21 I/O1 NC I/O6 I/O16 GND I/O20 I/O2 11 I/O4 22 I/O5 33 I/O17 I/O18 I/O19 44 55 66 A6 A3 CE3 PACKAGE INFORMATION 1.09+/-.010 SQ .149+/-.015 .180 .050 TYP .100 TYP .320 MAX .050 .600 TYP .018 PIN #1 IDENTIFIER (NOT CHAMFERED) .100 TYP 0.15 .040 ALL MEASUREMENTS IN INCHES .164 .410 2 .130 XM28C040P 3 XM28C040P ORDERING INFORMATION XM28C040P X –X Access Time 15 = 150ns 20 = 200ns 25 = 250ns Temperature Range Devices Blank = Commercial = 0°C to +70°C I = Industrial = –40°C to +85°C M = Military = –55°C to +125°C P = 66 Pin PUMA Module LIMITED WARRANTY Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc. makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Xicor, Inc. makes no warranty of merchantability or fitness for any purpose. Xicor, Inc. reserves the right to discontinue production and change specifications and prices at any time and without notice. Xicor, Inc. assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xicor, Inc. product. No other circuits, patents, licenses are implied. U.S. PATENTS Xicor products are covered by one or more of the following U.S. Patents: 4,263,664; 4,274,012; 4,300,212; 4,314,265; 4,326,134; 4,393,481; 4,404,475; 4,450,402; 4,486,769; 4,488,060; 4,520,461; 4,533,846; 4,599,706; 4,617,652; 4,668,932; 4,752,912; 4,829, 482; 4,874, 967; 4,883, 976. Foreign patents and additional patents pending. LIFE RELATED POLICY In situations where semiconductor component failure may endanger life, system designers using this product should design the system with appropriate error detection and correction, redundancy and back-up features to prevent such an occurrence. Xicor's products are not authorized for use in critical components in life support devices or systems 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 4