STC62WV2568 Datasheet, PDF (1/9 Pages) List of Unclassifed Manufacturers – Very Low Power/Voltage CMOS SRAM 256K X 8 bit

STC
Very Low Power/Voltage CMOS SRAM
256K X 8 bit
STC62WV2568
„ FEATURES
• Wide Vcc operation voltage : 2.4V~5.5V
• Very low power consumption :
Vcc = 3.0V C-grade : 22mA (@55ns) operating current
I- grade : 23mA (@55ns) operating current
C-grade : 17mA (@70ns) operating current
I- grade : 18mA (@70ns) operating current
0.3uA (Typ.) CMOS standby current
Vcc = 5.0V C-grade : 53mA (@55ns) operating current
I- grade : 55mA (@55ns) operating current
C-grade : 43mA (@70ns) operating current
I- grade : 45mA (@70ns) operating current
1.0uA (Typ.) CMOS standby current
• High speed access time :
-55
55ns
-70
70ns
• Automatic power down when chip is deselected
• Three state outputs and TTL compatible
• Fully static operation
• Data retention supply voltage as low as 1.5V
• Easy expansion with CE2, CE1, and OE options
„ DESCRIPTION
The STC62WV2568 is a high performance, very low power CMOS
Static Random Access Memory organized as 262,144 words by 8 bits
and operates from a wide range of 2.4V to 5.5V supply voltage.
Advanced CMOS technology and circuit techniques provide both high
speed and low power features with a typical CMOS standby current of
0.3uA at 3.0V /25^oC and maximum access time of 55ns at 3.0V /85^oC.
Easy memory expansion is provided by an active LOW chip
enable (CE1), an active HIGH chip enable (CE2), and active LOW
output enable (OE) and three-state output drivers.
The STC62WV2568 has an automatic power down feature, reducing the
power consumption significantly when chip is deselected.
The STC62WV2568 is available in DICE form, JEDEC standard 32 pin
450mil Plastic SOP, 8mmx13.4mm STSOP and 8mmx20mm TSOP.
„ PRODUCT FAMILY
PRODUCT
FAMILY
OPERATING
TEMPERATURE
STC62WV2568DC
STC62WV2568TC
STC62WV2568STC
STC62WV2568SC
STC62WV2568DI
STC62WV2568TI
STC62WV2568STI
STC62WV2568SI
+0 ^O C to +70 ^O C
-40 ^O C to +85 ^O C
Vcc
RANGE
2.4V ~5.5V
2.4V ~ 5.5V
SPEED
( ns )
55ns :3.0~5.5V
70ns :2.7~5.5V
55/70
55/70
POWER DISSIPATION
STANDBY
( ICCSB1, Max )
Operating
( ICC, Max )
Vcc=3.0V
Vcc=5.0V
Vcc=3.0V
70ns
Vcc=5.0V
70ns
3.0uA
10uA
17mA
43mA
5.0uA
30uA
18mA
45mA
PKG TYPE
DICE
TSOP-32
STSOP-32
SOP-32
DICE
TSOP-32
STSOP-32
SOP-32
„ PIN CONFIGURATIONS
A11 1
A9 2
A8 3
A13 4
WE 5
CE2 6
A15 7
VCC 8
A17 9
A16 10
A14 11
A12 12
A7 13
A6 14
A5 15
A4 16
32
31
30
29
28
27
STC62WV2568TC
26
STC62WV2568STC
25
STC62WV2568TI
24
STC62WV2568STI
23
22
21
20
19
18
17
OE
A10
CE1
DQ7
DQ6
DQ5
DQ4
DQ3
GND
DQ2
DQ1
DQ0
A0
A1
A2
A3
A17
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
1
32
2
31
3
30
4
29
5
28
6
27
7 STC62WV2568S 26
8 STC62WV2568SI 25
9
24
10
23
11
22
12
21
13
20
14
19
15
18
16
17
VCC
A15
CE2
WE
A13
A8
A9
A11
OE
A10
CE1
DQ7
DQ6
DQ5
DQ4
DQ3
„ BLOCK DIAGRAM
A13
A17
A15
A16
A14
A12
A7
A6
A5
A4
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
Address
20
Input
Buffer
Row
Decoder
1024
8
Data
Input
8
Buffer
8
8
Data
Output
Buffer
Memory Array
1024 x 2048
2048
Column I/O
Write Driver
Sense Amp
256
Column Decoder
CE2
CE1
Control
WE
OE
Vdd
Gnd
16
Address Input Buffer
A11 A9 A8 A3 A2 A1 A0 A10
STC International Limited. reserves the right to modify document contents without notice.
STC62WV2568
1
Revision 1.1
Jan. 2004