EtronTech

EM567168

Etron Technology, Inc.

No. 6, Technology Rd. V, Science-Based Industrial Park, Hsinchu, Taiwan 30077, R.O.C.

TEL: (886)-3-5782345

FAX: (886)-3-5778671

Etron Technology, Inc., reserves the right to make changes to its products and specifications without notice.

2M x 16 Pseudo SRAM

Rev 1.1

Apr. 2004

Features

• Organized as 2M words by 16 bits

• Fast Cycle Time : 55ns, 70ns

• Standby Current : 100uA

• Deep power-down Current : 10uA (Memory cell data

invalid)

• Byte data control: LB# (DQ0 - 7), UB# (DQ8 - 15)

• Compatible with low power SRAM

• Single Power Supply Voltage : 3.0V±0.3V

• Package Type : 48-ball FBGA, 6x8mm

Pin Description

Symbol

Function

A0 – A20

Address Inputs

DQ0 – DQ15

Data Inputs/Outputs

CE1#

Chip Enable

CE2

Deep Power Down

OE#

Output Enable

WE#

Write Control

LB#

Lower Byte Control

UB#

Upper Byte Control

Power Supply

Ground

Pin Assignment 48-Ball BGA, Top View

Overview

The EM567168 is a 32M-bit Pseudo SRAM organized as 2M words by 16 bits. It is designed with advanced

CMOS technology specified RAM featuring low power static RAM compatible function and pin configuration.

This device operates from a single power supply. Advanced circuit technology provides both high speed and

low power. It is automatically placed in low-power mode when CE1# or both UB# and LB# are asserted high or

CE2 is asserted low. There are three control inputs. CE1# and CE2 are used to select the device, and output

enable (OE#) provides fast memory access. Data byte control pins (LB#,UB#) provide lower and upper byte

access. This device is well suited to various microprocessor system applications where high speed, low power

and battery backup are required. And, with a guaranteed wide operating range, the EM567168 can be used in

environments exhibiting extreme temperature conditions.

Pin Location

Symbol

Location

Symbol

Location

Symbol

Location

Symbol

Location

Symbol

Location

Symbol

Location

A0

A3

A8

H2

A16

E4

DQ3

D5

DQ11

D2

WE#

G5

A1

A4

A9

H3

A17

D3

DQ4

E5

DQ12

E2

LB#

A1

A2

A5

A10

H4

A18

H1

DQ5

F5

DQ13

F2

UB#

B2

A3

B3

A11

H5

A19

G2

DQ6

F6

DQ14

F1

VCC

D6

A4

B4

A12

G3

A20

H6

DQ7

G6

DQ15

G1

VCC

E1

A5

C3

A13

G4

DQ0

B6

DQ8

B1

CE1#

B5

GND

D1

A6

C4

A14

F3

DQ1

C5

DQ9

C1

CE2

A6

GND

E6

A7

D4

A15

F4

DQ2

C6

DQ10

C2

OE#

A2

NC

E3

6

5

4

3

2

1

LB#

OE#

DQ8

UB#

A0

A1

A3

A4

A2

CE2

CE1#

DQ0

DQ9

DQ10

VSS

DQ11

A5

A6

A17

A7

DQ1

DQ2

DQ3

VCC

VCC

DQ12

DQ14

DQ13

NC

A16

A14

A15

DQ4

VSS

DQ5

DQ6

DQ15

A19

A18

A8

A12

A13

A9

A10

WE#

DQ7

A11

A20

G

H

F

E

D

C

B

A