Revision 2.0

April 2002

1

BSI

Very Low Power/Voltage CMOS SRAM

256K x 16 or 512K x 8 bit switchable

The BS616LV4023 is a high performance, very low power CMOS Static

Random Access Memory organized as 262,144words by 16 bits or

524,288 bytes by 8 bits selectable by CIO pin and operates from a wide

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 0.25uA and maximum access time of 70/100ns in 3V operation.

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 BS616LV4023 has an automatic power down feature, reducing the

power consumption significantly when chip is deselected.

The BS616LV4023 is available in DICE form and 48-ball BGA type.

POWER DISSIPATION

SPEED

(ns)

STANDBY

Operating

PRODUCT

FAMILY

OPERATING

TEMPERATURE

Vcc

RANGE

Vcc=3.0V

Vcc=

3.0V

Vcc=

3.0V

PKG TYPE

BS616LV4023DC

DICE

BS616LV4023BC

+0

2.4V ~ 3.6V

70 / 100

1.5uA

20mA

BGA-48-0810

BS616LV4023DI

DICE

BS616LV4023BI

-40

2.4V ~ 3.6V

70 / 100

3uA

25mA

BGA-48-0810

• Very low operation voltage : 2.4 ~ 3.6V

• Very low power consumption :

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 :

-70

70ns (Max.) at Vcc=3.0V

-10

100ns (Max.) at Vcc=3.0V

• 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

DESCRIPTION

FEATURES

BLOCK DIAGRAM

PRODUCT FAMILY

BS616LV4023

PIN CONFIGURATION

R0201-BS616LV4023

Row

Decoder

Memory Array

2048 x 2048

Column I/O

Write Driver

Sense Amp

Column Decoder

Data

Buffer

Output

A1 A2 A3

Data

Input

Buffer

Control

Vss

Vdd

OE

WE

D0

A8

A12

16(8)

16(8)

16(8)

16(8)

CE1

D15

A11

A7

A17

A13

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)

Vcc=3.0V

Vcc=3.0V