ADVANCED INFORMATION
DESCRIPTION:
The DPE128X32Y5 is a high-performance Electrically Erasable and
Programmable Read Only Memory (EEPROM) module and may
be organized as 128K X 32, 256K X 16 or 512K X 8.
The module is built with four low-power CMOS 128K X 8
EEPROMs. The four chip enables are used for individual BWDW*
selection. The DPE128X32Y5 is ideally suited for those computer
systems having 16-bit or 32-bit architectures.
The DPE128X32Y5 contains a 128-BWDW page register to allow
writing of up to 128 BWDWs simultaneously. During a write cycle,
the address and 1 to 128 BWDWs of data are internally latched,
freeing the address and data bus for other operations. Following
the initiation of a write cycle, the module will automatically write
the latched data using an internal control timer. The end of a write
cycle can be detected by DATA Polling of the most significant data
bit in each byte. Once the end of a write cycle has been detected,
a new access for a read or write can begin.
FEATURES:
Fast Access Time: 150ns
Organizations Available:
128Kx32, 256Kx16 or 512Kx8
Automatic Page Write Operation
Internal Address and Data Latches
Internal Control Timer
Fast Write Cycle Times
Page Write Cycle Time: 10ms maximum
1 to 128 BWDW* Page Write Operation
DATA Polling and R/B for END of Write Detection
Write Protection by RES Pin
High Reliability CMOS Technology
Endurance: 10
4
Cycles (in Page Mode)
Data Retention: 10 years
Single +5V Power Supply,
10% Tolerance
CMOS and TTL Compatible Inputs and Outputs
Package Available: 60-Pin TSOP Stack
* Byte, Word or Double Word (BWDW).
FUNCTIONAL BLOCK DIAGRAM
PIN NAMES
A0 - A16
Address Inputs
I/O0 - I/O31
Data Input/Output
CE0 - CE3
Low Chip Enables
WE
Write Enable
OE
Output Enable
RES
Reset
R/B
Ready/Busy
V
DD
Power (+5V)
V
SS
Ground
N.C.
No Connect
512Kx32/256Kx16/128Kx32, 150ns, TSOP STACK
30A229-00
A
This document contains information on a product under consideration for
development at Dense-Pac Microsystems, Inc. Dense-Pac reserves the right
to
c
hange or discontinue information on this product without prior notice.
PIN-OUT DIAGRAM
4 Megabit High Speed EEPROM
DPE128X32Y5
M-Densus
High Density Memory Device
30A229-00
REV. A
1
PDF 
ZIP