Low Power CMOS SRAM
256K X 8 Bits
UC62LV2008
-55/-70
ꢀFeatures:
• Vcc operation voltage : 1.5V ~ 3.6V
• Low power consumption :
15mA (Max.) operating current
1uA (Typ.) CMOS standby current
• High Speed Access time :
ꢀDescription
The UC62LV2008 is a high performance, very low power
CMOS Static Random Access Memory organized as 262,144
words by 8 bits and operates from 1.5V to 3.6V supply
voltage. Advanced CMOS technology and circuit techniques
provide both high speed and low power features with a
typical CMOS standby current of 1uA and maximum access
time of 70ns in 1.5V operation.
70ns (Max.) at Vcc = 1.5V
• Automatic power down when chip is deselected
• Three state outputs and TTL compatible
• Data retention supply voltage as low as 1.2V
• Easy expansion with CE\ and OE\ options
Easy memory expansion is provided enable (CE\), and
active LOW output enable (OE\) and three-state output
drivers.
The UC62LV2008 has an automatic power down feature,
reducing the power consumption significantly when chip is
deselected.
The UC62LV2008 is available in the JEDEC standard 32 pin
450mil Plastic SOP, 8mmx20.0mm TSOP (type I), and
8mmx13.4mm STSOP.
ꢀPRODUCT FAMILY
Speed
(ns)
Vcc=1.5V(Max.)
Power Consumption
Package
Operating
Tempature
Product Family
Vcc Range
STANDBY
Operating
Type
Vcc=3.3V(Typ.)
Vcc=3.6V(Max.)
UC62LV2008HC
UC62LV2008FC
UC62LV2008GC
UC62LV2008AC
UC62LV2008HI
UC62LV2008FI
UC62LV2008GI
UC62LV2008AI
TSOP-32
SOP-32
STSOP-32
DICE
0℃~ 70℃
1.5V ~ 3.6V
55/70
1uA
1uA
15mA
15mA
TSOP-32
SOP-32
STSOP-32
DICE
-40℃~ 85℃
1.5V ~ 3.6V
55/70
ꢀPIN CONFIGURATIONS
ꢀBLOCK DIAGRAM
A17
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
VCC
A15
CE2
WE
A13
A8
A9
A11
OE
ROW
Address
MEMORY ARRAY
256K X 8 Bits
UC62LV2008FI
UC62LV2008FC
COL
Address
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
COLUMN DECODER
CE2
CE
WE
SENSE AMPLIFIER
&
WRITE DRIVER
CE
X8
32
A11
A9
A8
1
2
3
4
5
6
7
8
9
OE
A10
CE
WE
OE
31
30
29
28
27
26
25
24
23
22
I/O BUFFER
OE
A13
WE
CE2
A15
VCC
A17
A16
A14
A12
A7
DQ7
DQ6
DQ5
DQ4
DQ3
GND
DQ2
DQ1
DQ0
A0
UC62LV2008HI
UC62LV2008GI
UC62LV2008HC
10
11
12
13
14
15
16
UC62LV2008GC
21
20
19
18
17
A6
A5
A4
A1
A2
A3
U-Chip Technology Corp. LTD.
Reserves the right to modify document contents without notice.
Preliminary Rev.1.0
PAGE 1