Very Low Power/Voltage CMOS SRAM
512K X 8 bit
BSI
BS62LV4008
FEATURES
DESCRIPTION
• Vcc operation voltage : 2.4V ~ 3.6V
• Very low power consumption :
The BS62LV4008 is a high performance, very low power CMOS
Static Random Access Memory organized as 524,288 words by 8 bits
and operates from a range of 2.4V 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
0.45uA at 3.0V/25oC and maximum access time of 55ns at 3.0V/85oC.
Easy memory expansion is provided by an active LOW chip enable
(CE) , and active LOW output enable (OE) and three-state output
drivers.
Vcc = 3.0V C-grade: 29mA (@55ns) operating current
I -grade: 30mA (@55ns) operating current
C-grade: 24mA (@70ns) operating current
I -grade: 25mA (@70ns) operating current
0.45uA (Typ.) CMOS standby current
• High speed access time :
-55
-70
55ns
70ns
The BS62LV4008 has an automatic power down feature, reducing the
power consumption significantly when chip is deselected.
The BS62LV4008 is available in the JEDEC standard 32L SOP, TSOP
, PDIP, TSOP II and STSOP package.
• Automatic power down when chip is deselected
• Fully static operation
• Data retention supply voltage as low as 1.5V
• Easy expansion with CE and OE options
• Three state outputs and TTL compatible
PRODUCT FAMILY
POWER DISSIPATION
SPEED
( ns )
STANDBY
Operating
PKG
PRODUCT
FAMILY
OPERATING
Vcc
( I CCSB1 , Max )
( I CC , Max )
TYPE
TEMPERATURE RANGE
55ns:3.0~3.6V
70ns:2.7~3.6V
Vcc =3.0V
Vcc = 3.0V
55ns
Vcc =3.0V
5uA
70ns
-
BS62LV4008TC
BS62LV4008STC
BS62LV4008SC
BS62LV4008EC
BS62LV4008PC
BS62LV4008TI
BS62LV4008STI
BS62LV4008SI
BS62LV4008EI
BS62LV4008PI
TSOP 32
-
STSOP 32
+0 O C to +70O
C
C
2.4V ~ 3.6V
2.4V ~ 3.6V
55 / 70
55 / 70
29mA
30mA
24mA
-
SOP 32
-
32
TSOP2 32
PDIP
-
-
TSOP 32
-
STSOP 32
O
40 C to +85O
25mA
-
10uA
-
SOP 32
-
TSOP2 32
-
PDIP 32
BLOCK DIAGRAM
PIN CONFIGURATIONS
A18
A16
A14
A12
A7
1
VCC
A15
A17
WE
A13
A8
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
2
A13
A17
A15
A18
A16
A14
A12
A7
3
4
Address
Input
Memory Array
5
22
2048
Row
Decoder
A6
6
A5
7
A9
2048 X 2048
A4
BS62LV4008SC
BS62LV4008SI
BS62LV4008EC
BS62LV4008EI
BS62LV4008PC
BS62LV4008PI
8
A11
OE
Buffer
A3
9
A6
A5
A4
A2
10
11
12
13
14
15
16
A10
CE
A1
A0
DQ7
DQ6
DQ5
DQ4
DQ3
2048
DQ0
DQ1
DQ2
GND
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
8
Data
Input
Buffer
8
Column I/O
Write Driver
Sense Amp
8
8
Data
Output
Buffer
256
1
2
3
4
5
6
7
8
32
A11
A9
A8
OE
A10
CE
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
Column Decoder
16
A13
WE
A17
A15
VCC
A18
A16
A14
A12
A7
DQ7
DQ6
DQ5
DQ4
DQ3
GND
DQ2
DQ1
DQ0
A0
CE
WE
OE
Control
BS62LV4008TC
BS62LV4008STC
BS62LV4008TI
BS62LV4008STI
Address Input Buffer
9
10
11
12
13
14
15
16
Vdd
GND
A11 A9 A8 A3 A2 A1 A0 A10
A6
A5
A4
A1
A2
A3
Brilliance Semiconductor, Inc. reserves the right to modify document contents without notice.
Revision 1.1
Jan. 2004
R0201-BS62LV4008
1