Low Power CMOS SRAM
32K X8 Bits
UC62LV0256
-35/-55/-70
ꢀFeatures:
• Vcc operation voltage : 2.0V ~ 3.6V
• Low power consumption :
10mA (Max.) operating current
0.1uA (Typ.) CMOS standby current
• High Speed Access time :
ꢀDescription
The UC62LV0256 is a high performance, very low power
CMOS Static Random Access Memory organized as 32,768
words by 8 bits and operates from a wide range of 2.0V 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 2.0V operation.
35ns (Max.) at Vcc = 2.7V
55ns (Max.) at Vcc = 2.7V
70ns (Max.) at Vcc = 2.0V
Easy memory expansion is provided enable (CE), and
active LOW output enable (OE) and three-state output
drivers.
The UC62LV0256 has an automatic power down feature,
reducing the power consumption significantly when chip is
deselected.
• 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
The UC62LV0256 is available in the JEDEC standard 28 pin
330mil Plastic SOP, 300mil Plastic SOJ, 600mil Plastic DIP
and 8mmx13.4mm TSOP (normal type).
ꢀPRODUCT FAMILY
Speed
(ns)
Vcc=2.7V
Power Consumption
Product
Family
Operating
Temperature
Package
Type
Vcc Range
STANDBY
Vcc=3.0V
VCC=3.6V Operating (Max)
35ns
55ns
70ns
UC62LV0256BC
UC62LV0256CC
UC62LV0256DC
UC62LV0256EC
UC62LV0256AC
UC62LV0256BI
UC62LV0256CI
UC62LV0256DI
UC62LV0256EI
UC62LV0256AI
SOP-28
TSOP-28
PDIP-28
SOJ-28
DICE
0℃~ 70℃
-25℃~ 85
2.0V ~ 3.6V
-35/ -55/ -70
0.1uA
17mA
13mA
10mA
SOP-28
TSOP-28
PDIP-28
SOJ-28
DICE
2.0V ~ 3.6V
-35/ -55/ -70
0.1uA
17mA
13mA
10mA
ꢀPIN CONFIGURATIONS
ꢀBLOCK DIAGRAM
A14
A12
A7
1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VCC
WE
A13
A8
ROW
Address
2
MEMORY ARRAY
32K X 8 Bits
3
UC62LV0256BI
UC62LV0256DI
UC62LV0256EI
UC62LV0256BC
UC62LV0256DC
UC62LV0256EC
A6
4
COL
Address
A5
5
A9
A4
6
A11
OE
COLUMN DECODER
A3
7
A2
8
A10
CE
SENSE AMPLIFIER
&
WRITE DRIVER
CE
WE
OE
A1
9
CE
A0
10
11
12
13
14
DQ7
DQ6
DQ5
DQ4
DQ3
X8
WE
DQ0
DQ1
DQ2
GND
I/O BUFFER
OE
OE
A11
A9
1
28
A10
CE
2
27
26
25
24
23
22
21
20
19
18
17
16
15
3
DQ7
DQ6
DQ5
DQ4
DQ3
GND
DQ2
DQ1
DQ0
A0
A8
4
A13
WE
VCC
A14
A12
A7
5
6
7
UC62LV0256CC
UC62LV0256CI
8
9
10
11
12
13
14
A6
A5
A4
A1
A3
A2
U-Chip Technology Corp. LTD.
Reserves the right to modify document contents without notice.
Revision 2.0
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