Low Power CMOS SRAM
32K X8 Bits
UC62WV0256
-35/-55/-70
ꢀFeatures:
• Vcc operation voltage : 2.0V ~ 5.6V
• Low power consumption :
15mA (Max.) operating current
2uA (Typ.) CMOS standby current
• High Speed Access time :
ꢀDescription
The UC62WV0256 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
2.7V to 5.6V 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.
Easy memory expansion is provided enable (CE), and
active LOW output enable (OE) and three-state output
drivers.
35ns (Max) at Vcc = 2.7V
55ns (Max) at Vcc = 2.7V
70ns (Max.) at Vcc= 2.0V
• 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 UC62WV0256 has an automatic power down
feature, reducing the power consumption significantly when
chip is deselected.
The UC62WV0256 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
Power Consumption
Speed
(ns)
Operating
Temperature
Package
Type
VCC=5.6V
Product Family
Vcc Range
STANDBY
Vcc=5.0V
Operating(Max)
Vcc=2.7V
35ns
55ns
70ns
UC62WV0256BC
UC62WV0256CC
UC62WV0256DC
UC62WV0256EC
UC62WV0256AC
UC62WV0256BI
UC62WV0256CI
UC62WV0256DI
UC62WV0256EI
UC62WV0256AI
SOP-28
TSOP-28
PDIP-28
SOJ-28
DICE
0℃~ 70℃
2.0V ~ 5.6V
35/55/70
4uA
25mA
25mA
18mA
15mA
15mA
SOP-28
TSOP-28
PDIP-28
SOJ-28
DICE
-25℃~ 85
2.0V ~ 5.6V
35/55/70
4uA
18mA
ꢀ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
2
3
UC62WV0256BI
UC62WV0256DI
UC62WV0256EI
UC62WV0256BC
UC62WV0256DC
UC62WV0256EC
ROW
Address
A6
4
MEMORY ARRAY
32K X 8 Bits
A5
5
A9
A4
6
A11
OE
COL
Address
A3
7
A2
8
A10
CE
COLUMN DECODER
A1
9
SENSE AMPLIFIER
&
WRITE DRIVER
A0
10
11
12
13
14
DQ7
DQ6
DQ5
DQ4
DQ3
CE
WE
OE
DQ0
DQ1
DQ2
GND
CE
X8
WE
I/O BUFFER
OE
OE
A11
A9
1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A10
CE
2
3
DQ7
DQ6
DQ5
DQ4
DQ3
GND
DQ2
DQ1
DQ0
A0
A8
4
A13
WE
VCC
A14
A12
A7
5
6
7
UC62WV0256CC
UC62WV0256CI
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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