®
LY62W51216
512K X 16 BIT LOW POWER CMOS SRAM
Rev. 1.8
FEATURES
GENERAL DESCRIPTION
The LY62W51216 is a 8,388,608-bit low power
CMOS static random access memory organized as
524,288 words by 16 bits. It is fabricated using very
high performance, high reliability CMOS technology.
Its standby current is stable within the range of
operating temperature.
Fast access time : 55/70ns
Low power consumption:
Operating current : 30/20mA (TYP.)
Standby current : 6μA (TYP.) LL-version
3μA (TYP.) SL-version
Single 2.7V ~ 5.5V power supply
All inputs and outputs TTL compatible
Fully static operation
Tri-state output
Data byte control : LB# (DQ0 ~ DQ7)
UB# (DQ8 ~ DQ15)
Data retention voltage : 1.5V (MIN.)
Green package available
Package : 44-pin 400 mil TSOP-II
48-ball 6mm x 8mm TFBGA
The LY62W51216 is well designed for low power
application, and particularly well suited for battery
back-up nonvolatile memory application.
The LY62W51216 operates from a single power
supply of 2.7V ~ 5.5V and all inputs and outputs are
fully TTL compatible
PRODUCT FAMILY
Power Dissipation
Speed
Product
Family
LY62W51216
Operating
Temperature
0 ~ 70℃
Vcc Range
Standby(ISB1,TYP.) Operating(Icc,TYP.)
2.7 ~ 5.5V
2.7 ~ 5.5V
55/70ns
55/70ns
6µA(LL)/3µA(SL)
6µA(LL)/3µA(SL)
30/20mA
30/20mA
-40 ~ 85℃
LY62W51216(I)
FUNCTIONAL BLOCK DIAGRAM
PIN DESCRIPTION
SYMBOL
DESCRIPTION
Address Inputs
Vcc
Vss
A0 - A18
DQ0 – DQ15 Data Inputs/Outputs
512Kx16
MEMORY ARRAY
CE#
WE#
OE#
LB#
UB#
VCC
Chip Enable Input
Write Enable Input
Output Enable Input
Lower Byte Control
Upper Byte Control
Power Supply
A0-A18
DECODER
DQ0-DQ7
Lower Byte
VSS
Ground
I/O DATA
CIRCUIT
COLUMN I/O
DQ8-DQ15
Upper Byte
CE#
WE#
OE#
LB#
CONTROL
CIRCUIT
UB#
Lyontek Inc. reserves the rights to change the specifications and products without notice.
2F, No.17, Industry E. Rd. II, Science-Based Industrial Park, Hsinchu 300, Taiwan.
TEL: 886-3-6668838
FAX: 886-3-6668836
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