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4 Megabit Puma Module
XM28C040P
512K x 8 Bit
High Density 5 Volt Byte Alterable Nonvolatile Memory 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 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 FUNCTIONAL DIAGRAM
OE WE1 CE1 WE2 CE2 WE3 CE3 WE4 CE4
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. 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.
128K x 8
128K x 8
128K x 8
128K x 8
A0-A16 I/O0-I/O7
I/O8-I/O15
I/O16-I/O23
I/O24-I/O31
(c)Xicor, 1995, 1996 Patents Pending 7053 8/13/97 T0/C0/D0 SH
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Characteristics subject to change without notice
XM28C040P
PIN CONFIGURATION
1 12 23 34 45 56
I/O8 WE2 CE2 I/O9 A10 I/O14
I/O22 VCC
CE4
I/O23 A10 I/O28 I/O24 WE4 I/O27 A7 A12 I/O25 I/O26 A4 A1 A2 A3 CE3
I/O10 GND I/O13 NC A16 A9 A0 NC I/O0 I/O1 I/O2 11 I/O11 I/O12 OE A8 A11 I/O3
NC/VBB A5 A14 A6
A15 WE1 VCC A10 NC I/O4 22 CE I/O7 I/O6 I/O5 33
A13 WE3
I/O15 A10 I/O21 I/O16 GND I/O20 I/O17 I/O18 I/O19 44 55 66
PACKAGE INFORMATION
1.09+/-.010 SQ
.149+/-.015
.180 .050 TYP .100 TYP PIN #1 IDENTIFIER (NOT CHAMFERED) .100 TYP .600 TYP
.320 MAX .050 .018
0.15 .040 ALL MEASUREMENTS IN INCHES .410 .164 .130
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XM28C040P
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XM28C040P
ORDERING INFORMATION
XM28C040P X
-X Access Time 15 = 150ns 20 = 200ns 25 = 250ns Temperature Range Devices Blank = Commercial = 0C to +70C I = Industrial = -40C to +85C M = Military = -55C to +125C 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.
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