ETRON EM564081BC-85E, EM564081BC-85, EM564081BC-70E, EM564081BC-70, EM564081BA-85E Datasheet

EtronTech

EM564081

512K x 8 Low Power SRAM

Preliminary, Rev 0.7 01/2001

Features

• Single power supply voltage of 2.3V to 3.6V

• Power down features using CE1# and CE2

• Low power dissipation

• Data retention supply voltage: 1.0V to 3.6V

• Direct TTL compatibility for all input and output

• Wide operating temperature range: -40°C to 85°C

• Standby current @ VDD = 3.6 V

I

DDS2

Typical Maximum
EM564081BA/BC-70/85
EM564081BA/BC-70E/85E

1 µA 10 µA
5 µA 80 µA

Ordering Information

Part Number Speed I

EM564081BC-70 70 ns
EM564081BC-70E 70 ns
EM564081BA-70 70 ns
EM564081BA-70E 70 ns
EM564081BC-85 85 ns
EM564081BC-85E 85 ns
EM564081BA-85 85 ns
EM564081BA-85E 85 ns

DDS2

10 µA
80 µA
10 µA
80 µA
10 µA
80 µA
10 µA
80 µA

Package

6x8 BGA
6x8 BGA
8x10 BGA
8x10 BGA
6x8 BGA
6x8 BGA
8x10 BGA
8x10 BGA

Pin Configuration

36-Ball BGA (CSP), Top View

1 2 3 4 5 6

A

A0 A1

B

DQ4 A2

C

DQ5 NC A5 DQ1

D

GND VDD

E

VDD GND

F

DQ6 A18

G

DQ7

H

A9 A10

OE#

WE#

CE1#

A3 A6 A8

CE2

A4 A7 DQ0

A17

A16 A15 DQ3

A12 A13 A14

A11

Pin Description

Symbol Function

A0 - A18 Address Inputs
DQ0 – DQ7 Data Inputs / Outputs
CE1#, CE2 Chip Enable Inputs
OE# Output Enable
WE# Read / Write Control Input
GND Ground
V

DD

NC No Connection

Power Supply

DQ2

Overview

The EM564081 is a 4,194,304-bit SRAM organized as 512K by 8 bits. It is designed with advanced CMOS
technology. This Device operates from a single 2.3V to 3.6V power supply. Advanced circuit technology
provides both high speed and low power. It is automatically placed in low-power mode when chip enable (CE1#)
is asserted high or (CE2) is asserted low. There are three control inputs. CE1# and CE2 are used to select the
device and for data retention control, and output enable (OE#) provides fast memory 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 operating range from -40°C to 85°C, the EM564081 can be used in
environments exhibiting extreme temperature conditions.

Etron Technology, Inc.

No. 6, Technology Rd. V, Science-Based Industrial Park, Hsinchu, Taiwan 30077, R.O.C.
TEL: [phone] FAX: [phone]

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

EtronTech

Block Diagram

EM564081

WE#

DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7

A0

A18

MEMO RY

CELL ARRAY

512KX8

SENSE AMP

COLUMN ADDRESS
DECODER

VDD

GND

CE1#

CE2

OE#

POWER DOWN
CIRCUIT

Preliminary

2 Rev 0.7

January 2001

EtronTech

Operating Mode

Mode CE1# CE2 OE# WE# DQ0~DQ7

EM564081

Read L H L H D
Write L H X L D

Output Deselect L H H H High-Z

H X X X

Standby

X L X X

High-Z

Note: X = don't care. H=logic high. L=logic low.

Absolute Maximum Ratings

Supply voltage, V
Input voltages, V

Input and output voltages, V
Operating temperature, T

Storage temperature, T
Soldering Temperature (10s), T
Power dissipation, P

DD

IN

I/O

OPR

STRG

D

SOLDER

-0.3 to +4.6V

-0.3 to +4.6V

-0.5 to V

-40 to +85°C

-55 to +150°C

OUT

IN

DD

+0.5V

260°C

0.6 W

DC Recommended Operating Conditions (Ta=-40°C to 85°C)

Symbol Parameter Min Typ Max Unit

V

DD

V

IH

V

IL

V

DR
Note:
(1) Overshoot : VDD +2.0V in case of pulse width ≤ 20ns
(2) Undershoot : -2.0V in case of pulse width ≤ 20ns

Power Supply Voltage 2.3

Input High Voltage 2.2

Input Low Voltage -0.3

Data Retention Supply Voltage 1.0

(2)

−

−

−

−

3.6 V

V

+ 0.3

DD

0.6 V

3.6 V

(1)

V

Preliminary

3 Rev 0.7

January 2001

EtronTech

EM564081

DC Characteristics (Ta = -40°C to 85°C, VDD = 2.3V to 3.6V)

Parameter Symbol Test Conditions Min Typ* Max Unit

Input low current I
Output low

voltage
Output high

voltage

Operating current

Standby current

Notes:

* Typical value are measured at Ta = 25°C.
** In standby mode with CE1# ≥ VDD - 0.2V, these limits are assured for the condition
CE2 ≥ V

- 0.2V or CE2 ≤ 0.2V.

DD

V

V

OH

DD1

I

DD2

I

DDS1

I

DDS2

(Note)

IL

OL

I

= 0V to V

IN

I

= 2.1 mA -

OL

I

= -1.0 mA

OH

CE1# = V
CE2 = V
I

OUT

Other Input = V

CE1# = V

CE1# = V

**

CE2 = 0.2V

IL

IH

= 0mA

IH

DD

DD

and

and

/ V

IH

or CE2 = V

– 0.2V or

Cycle time

IL

IL

-70/85

-70E/85E V

V

DD

V

V

V
V
V

DD

DD

DD
DD
DD
DD

= min

Cycle time = 1µs

= 3.6 V

= 2.7 V

= 2.3 V

= 3.6 V
= 2.7 V
= 2.3 V
= 3.6 V

- 1

VDD -

0.15

−

−

−

− −

− −

−

−

−

−

−

0.4 V

−

− −

15 25

10 15I

7 12

0.5 mA

1 10

0.8 5

0.5 3
5 80

1

µA

V

mA

5

µA

Capacitance (Ta = 25°C; f = 1 MHz)

Parameter Symbol Min Typ Max Unit Test Conditions

Input capacitance C
Output capacitance C

Notes:

This parameter is periodically sampled and is not 100% tested.

Preliminary

IN

OUT

− −

− −

10 pF VIN = GND
10 pF V

OUT

= GND

4 Rev 0.7

January 2001