UTRON
UT62L25616(I)
256K X 16 BIT LOW POWER CMOS SRAM
Rev. 1.1
FEATURES
GENERAL DESCRIPTION
The UT62L25616(I) is a 4,194,304-bit low power
CMOS static random access memory organized as
262,144 words by 16 bits.
ꢀ Fast access time : 55/70/100 ns
ꢀ CMOS Low operating power
Operating current: 45/35/25mA (Icc max)
Standby current: 20 uA(TYP.) L-version
3 uA(TYP.) LL-version
The UT62L25616(I) operates from a single 2.7V ~
3.6V power supply and all inputs and outputs are fully
TTL compatible.
ꢀ Single 2.7V~3.6V power supply
ꢀ Operating temperature:
℃
℃
Industrial : -40 ~85
The UT62L25616(I) is designed for low power system
applications. It is particularly suited for use in
high-density high-speed system applications.
ꢀ All inputs and outputs TTL compatible
ꢀ Fully static operation
ꢀ Three state outputs
ꢀ Data retention voltage: 1.5V (min)
PIN DESCRIPTION
ꢀ Data byte control :
(I/O1~I/O8)
(I/O9~I/O16)
Ⅱ
LB
UB
SYMBOL
DESCRIPTION
Address Inputs
ꢀ Package : 44-pin 400mil TSOP
A0 - A17
48-pin 6mm × 8mm TFBGA
I/O1 - I/O16
Data Inputs/Outputs
Chip Enable Input
Write Enable Input
Output Enable Input
Lower-Byte Control
High-Byte Control
CE
WE
OE
LB
UB
VCC
VSS
NC
FUNCTIONAL BLOCK DIAGRAM
A0
A1
A2
Power Supply
A3
.
Ground
V
MEMORY ARRAY
CC
A4
ROW
No Connection
2048 Rows x 128 Columns x 16 bits
.
.
A8
A13
A14
A15
A16
A17
DECODER
V
SS
.
. .
I/O
CONTROL
I/O1
.
.
.
.
.
.
.
.
COLUMN I/O
I/O16
CE
COLUMN DECODER
WE
LOGIC
OE
CONTROL
LB
UB
A9 A10 A11 A12 A5 A6 A7
UTRON TECHNOLOGY INC.
1F, No. 11, R&D Rd. II, Science-Based Industrial Park, Hsinchu, Taiwan, R. O. C.
TEL: 886-3-5777882 FAX: 886-3-5777919
P80054
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