®
LY61256
32K X 8 BIT HIGH SPEED CMOS SRAM
Rev. 1.7
FEATURES
GENERAL DESCRIPTION
The LY61256 is a 262,144-bit high speed CMOS
static random access memory organized as 32,768
words by 8 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 : 8/10/12/15ns
Low power consumption:
Operating current : 110/100/90/80mA (TYP.)
Standby current : 1mA (TYP.)
2μA (TYP.) LL-version
Single 5V power supply
All inputs and outputs TTL compatible
Fully static operation
Tri-state output
Data retention voltage : 2.0V (MIN.)
Green package available
Package : 28-pin 300 mil SOJ
28-pin 300 mil Skinny P-DIP
28-pin 8mm x 13.4mm STSOP
The LY61256 is well designed for high speed
system application. Easy expansion is provided by
using an active LOW Chip Enable(CE#). The active
LOW Write Enable(WE#) controls both writing and
reading of the memory.
The LY61256 operates from a single power
supply of 5V and all inputs and outputs are fully TTL
compatible
PRODUCT FAMILY
Power Dissipation
Speed
Product
Family
LY61256
Operating
Temperature
0 ~ 70℃
Vcc Range
Standby(ISB1,TYP.) Operating(Icc,TYP.)
4.5 ~ 5.5V
4.5 ~ 5.5V
4.5 ~ 5.5V
4.5 ~ 5.5V
4.5 ~ 5.5V
4.5 ~ 5.5V
8/10/12/15ns
8/10/12/15ns
8/10/12/15ns
8/10/12/15ns
8/10/12/15ns
8/10/12/15ns
1mA
1mA
110/100/90/80mA
110/100/90/80mA
110/100/90/80mA
110/100/90/80mA
110/100/90/80mA
110/100/90/80mA
-20 ~ 80℃
-40 ~ 85℃
0 ~ 70℃
LY61256(E)
LY61256(I)
1mA
LY61256(LL)
LY61256(LLE)
LY61256(LLI)
2μA(LL)
2μA(LL)
2μA(LL)
-20 ~ 80℃
-40 ~ 85℃
FUNCTIONAL BLOCK DIAGRAM
PIN DESCRIPTION
SYMBOL
DESCRIPTION
Address Inputs
Vcc
Vss
A0 - A14
DQ0 – DQ7 Data Inputs/Outputs
32Kx8
A0-A14
DECODER
MEMORY ARRAY
CE#
WE#
OE#
VCC
Chip Enable Input
Write Enable Input
Output Enable Input
Power Supply
VSS
Ground
I/O DATA
CIRCUIT
DQ0-DQ7
COLUMN I/O
CE#
WE#
OE#
CONTROL
CIRCUIT
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, Industry E. Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan.
TEL: 886-3-6668838
FAX: 886-3-6668836
1
LYONTEK [ Lyontek Inc. ]
