EtronTech
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
IDDS2
Typical
EM564161BC -55
EM564161BC/BA -70/85
EM564161BC –55E
EM564161BC/BA -70E/85E
1
µA
1
µA
5
µA
5
µA
Maximum
10
µA
10
µA
80
µA
80
µA
D
GND
DQ11
A17
A7
EM564161
256K x 16 Low Power SRAM
Rev 3.1
Pin Configuration
48-Ball BGA (CSP), Top View
1
A
LB#
2
OE#
3
A0
4
A1
5
A2
6
CE2
04/2004
B
DQ8
UB#
A3
A4
CE 1#
DQ0
C
DQ9
DQ10
A5
A6
DQ1
DQ2
DQ3
VDD
E
VDD
DQ12
NC
A16
DQ4
GND
F
DQ14
DQ13
A14
A15
DQ5
DQ6
G
DQ15
NC
A12
A13
WE#
DQ7
Ordering Information
Part Number
EM564161BC-55
EM564161BC-55E
EM564161BC-70
EM564161BC-70E
EM564161BA-70
EM564161BA-70E
EM564161BC-85
EM564161BA-85
EM564161BA-85E
H
NC
A8
A9
A10
A11
NC
Speed
55 ns
55 ns
70 ns
70 ns
70 ns
70 ns
85 ns
85 ns
85 ns
I
DDS2
10
µA
80
µA
10
µA
80
µA
10
µA
80
µA
10
µA
10
µA
80
µA
Package
6x8 BGA
6x8 BGA
6x8 BGA
6x8 BGA
8x10 BGA
8x10 BGA
6x8 BGA
8x10 BGA
8x10 BGA
Pin Description
Symbol
A0 - A17
DQ0 - DQ15
CE1#, CE2
OE#
WE#
LB#, UB#
GND
V
DD
NC
Function
Address Inputs
Data Inputs / Outputs
Chip Enable Inputs
Output Enable
Read / Write Control Input
Data Byte Control Inputs
Ground
Power Supply
No Connection
Overview
The EM564161 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 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.
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
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.
ETRON [ ETRON TECHNOLOGY, INC. ]
