256 Mega bit Syn chro nous DRAM
DPSD64MX4RY5
DE SCRIP TION:
The LP-StackTM series is a family of interchangeable memory modules. The 256 Megabit SDRAM is a member of this
family which utilizes the new and innovative space saving TSOP stacking technology. The modules are constructed
with four 16 Meg x 4 SDRAMs.
This 64 Megabit based LP-StackTM module, the DPSD64MX4RY5 has been designed to fit in the same footprint as the
16 Meg x 4 SDRAM TSOP monolithic and 64 Megabit and higher density SDRAM based family of LP-StackTM modules.
This allows the memory board designer to upgrade the memory in their products without redesigning the memory
board, thus saving time and money.
FEA TURES:
Configuration Available:
64 Meg x 4 (4 Banks of 4M x 4 bits x 4 banks)
Clock Frequency:
66
[1]
, 83
[1]
, 100, 125
[2]
, 133
[2]
MHz (max.)
PC100 and PC133 Compatible
3.3V Supply
LVTTL Compatible I/O
Four Bank Operation
Programmable Burst Type, Burst Length,
and CAS Latency
4096 Cycles / 64 ms
Auto and Self Refresh
Package: TSOP Leadless Stack
1
30A181-04
REV. A
PIN-OUT DI A GRAM
* Reserved for A12 on higher density modules.
FUNC TIONAL BLOCK DI A GRAM
64Mx4, 7.5 - 15ns, P12, LP-Stack
30A181-04
A
This document contains information on a product under consideration for
development at Dense-Pac Microsystems, Inc. Dense-Pac reserves the right
to change or discontinue information on this product without prior notice.
PIN NAMES
A0 - A11
Row Address:
A0 - A11
Column Address: A0 - A9
BA0, BA1
Bank Select Address
DQ0 - DQ3
Data In / Data Out
CAS
Column Address Strobes
RAS
Row Address Enables
WE
Data Write Enable
DQM
Data Input/Output Mask
CKE
Clock Enable
CLK
System Clock
CS0-CS3
Chip Selects
V
CC
/V
SS
Power Supply/Ground
V
CCQ
/V
SSQ
Data Output Power/Ground
N.C.
No Connect
NOTES: [1] Available in Military and Industrial Temperature Ranges Only.
[2] Available in Commercial Temperature Range Only.
DPSD64MX4RY5
Dense-Pac Microsystems, Inc.
2
30A181-04
REV. A
ME CHAN I CAL DRAWING
Dense-Pac Microsystems, Inc.
7321 Lincoln Way, Garden Grove, California 92841-1431
(714) 898-0007 u (800) 642-4477 u FAX: (714) 897-1772 u http://www.de
PART NUMBER DE SCRIP TION
NOTES: [1] Available in Military and Industrial Temperature Ranges Only.
[2] Available in Commercial Temperature Range Only.
[3] Contact your sales representative for supplier and manufacturer codes.
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