EtronTech
EM564081
512K x 8 Low Power SRAM
Preliminary, Rev 0.7 01/2001
Features
Pin Configuration
36-Ball BGA (CSP), Top View
· Single power supply voltage of 2.3V to 3.6V
· Power down features using CE1# and CE2
· Low power dissipation
1
2
3
4
5
6
A
B
C
D
E
F
A0
A1
A3
A6
A8
CE2
· 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
IDDS2
DQ4
DQ5
GND
VDD
DQ6
DQ7
A9
A2
A4
A5
A7
DQ0
DQ1
VDD
GND
DQ2
DQ3
A14
WE#
NC
Typical
1 mA
Maximum
10 mA
EM564081BA/BC-70/85
EM564081BA/BC-70E/85E
5 mA
80 mA
A18
CE1#
A11
A17
A16
A12
Ordering Information
G
H
A15
A13
OE#
A10
Part Number
Speed IDDS2
Package
6x8 BGA
6x8 BGA
8x10 BGA
8x10 BGA
6x8 BGA
6x8 BGA
8x10 BGA
8x10 BGA
EM564081BC-70
70 ns
10 mA
80 mA
10 mA
80 mA
10 mA
80 mA
10 mA
80 mA
EM564081BC-70E 70 ns
EM564081BA-70
EM564081BA-70E
EM564081BC-85
70 ns
70 ns
85 ns
Pin Description
Symbol
A0 - A18
DQ0 – DQ7
CE1#, CE2
OE#
Function
Address Inputs
Data Inputs / Outputs
Chip Enable Inputs
Output Enable
EM564081BC-85E 85 ns
EM564081BA-85
EM564081BA-85E
85 ns
85 ns
WE#
GND
Read / Write Control Input
Ground
V
DD
Power Supply
NC
No Connection
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: (886)-3-5782345
FAX: (886)-3-5778671
Etron Technology, Inc., reserves the right to make changes to its products and specifications without notice.