EtronTech
EM584161
256K x 16 Low Power SRAM
Rev 2.0
11/2003
Features
Pin Configuration
48-Ball BGA (CSP), Top View
Single power supply voltage of 1.65V to 1.95V
Power down features using CE1# and CE2
Low power dissipation
•
•
•
•
•
•
•
1
2
3
4
5
6
A
B
C
D
E
F
LB#
OE#
A0
A1
A2
CE2
Data retention supply voltage: 0.9V to 1.95V
Direct TTL compatibility for all input and output
Wide operating temperature range: -40°C to 85°C
Standby current @ VDD = 1.95 V
DQ8
DQ9
GND
VDD
DQ14
DQ15
NC
UB#
DQ10
DQ11
DQ12
DQ13
NC
A3
A5
A4
A6
CE1#
DQ1
DQ3
DQ4
DQ5
WE#
A11
DQ0
DQ2
VDD
GND
DQ6
DQ7
NC
ISB
A17
NC
A14
A12
A9
A7
Maximum
EM584161BA/BC-70/85
EM584161BA-70E/85E
8 µA
A16
A15
A13
A10
80 µA
Ordering Information
G
H
Part Number
Speed ISB
Package
EM584161BC-70
EM584161BA-70
EM584161BA-70E
EM584161BC-85
EM584161BA-85
EM584161BA-85E
70 ns
70 ns
70 ns
85 ns
85 ns
85 ns
6x8 BGA
8x10 BGA
8x10 BGA
6x8 BGA
8x10 BGA
8x10 BGA
8 µA
8 µA
80 µA
8 µA
8 µA
80 µA
A8
Pin Description
Symbol
A0 - A17
DQ0 - DQ15
CE1#, CE2
OE#
Function
Address Inputs
Data Inputs / Outputs
Chip Enable Inputs
Output Enable
WE#
LB#, UB#
GND
Read / Write Control Input
Data Byte Control Inputs
Ground
V
DD
Power Supply
Overview
NC
No Connection
The EM584161 is a 4,194,304-bit SRAM organized as 262,144 words by 16 bits. It is designed with advanced
CMOS technology. This Device operates from a single 1.65V to 1.95V 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.
Data byte control pin (LB#,UB#) provides 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 operating range from -40°C to 85°C, the EM584161 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.