Revision 2.4
April 2002
1
Preliminary
Ultra Low Power/Voltage CMOS SRAM
256K x 16 or 512K x 8 bit switchable
The BS616UV4020 is a high performance, ultra low power CMOS Static
Random Access Memory organized as 262,144 words by 16 bits or
524,288 bytes by 8 bits selectable by CIO pin 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 0.2uA@2.2V/25oC and maximum access time of 120ns.
Easy memory expansion is provided by active HIGH chip enable2
(CE2), active LOW chip enable1(CE1), active LOW output enable(OE)
and three-state output drivers.
The BS616UV4020 has an automatic power down feature, reducing the
power consumption significantly when chip is deselected.
The BS616UV4020 is available in DICE form and 48-pin BGA type.
• Wide Vcc operation voltage : 2.0 ~ 3.6V
• Ultra low power consumption :
Vcc = 2.2V C-grade: 15mA (Max.) operating current
I-grade : 20mA (Max.) operating current
0.2uA (Typ.) CMOS standby current
Vcc = 3.0V C-grade: 20mA (Max.) operating current
I-grade : 25mA (Max.) operating current
0.25uA (Typ.) CMOS standby current
• High speed access time :
-12 120ns (Max.)
-15 150ns (Max.)
• 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 CE1, CE2 and OE options
• I/O Configuration x8/x16 selectable by CIO, LB and UB pin
DESCRIPTIONFEATURES
BLOCK DIAGRAM
PRODUCT FAMILY
Brilliance Semiconductor Inc. reserves the right to modify document contents without notice.
BS616UV4020
Row
Decoder
Memory Array
2048 x 2048
Column I/O
Write Driver
Sense Amp
Column Decoder
Data
Buffer
Output
A1 A2 A3
Data
Buffer
Input
Control
Vss
Vdd
OE
WE
CE1
D15
D0
A11
A7
A17
A8
A12
A13
16(8)
16(8)
16(8)
16(8)
14(16)
128(256)
2048
2048
22
A10
A9
A0
A6
A4
A16
A14
Address
Input
Buffer
A5
Address Input Buffer
.
.
.
.
UB
.
.
.
.
LB
A15
CIO
CE2
(SAE)
PIN CONFIGURATION
R0201-BS616UV4020
POWER DISSIPATION
SPEED
(ns) STANDBY
(ICCSB1, Max)
Operating
(ICC, Max)
PRODUCT FAMILY OPERATING
TEMPERATURE Vcc RANGE
Vcc=3V Vcc=3V
PKG TYPE
BS616UV4020DC DICE
BS616UV4020BC +0 O C to +70 O C 2.0V ~ 3.6V 120 / 150 1uA 1.5uA 15mA 20mA BGA-48-0810
BS616UV4020DI DICE
BS616UV4020BI -40 O C to +85 O C2.0V ~ 3.6V 120 / 150 2uA 3uA 20mA 25mA BGA-48-0810
BSI
Vcc=2.2V Vcc=3V
Vcc=2.0V~3.6V Vcc=2.2V