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
I
DDS2
Typical
EM564161BA/BC-70/85
EM564161BA-70E/85E
1
µA
5
µA
Maximum
10
µA
80
µA
E
VDD
DQ12
NC
A16
D
GND
DQ11
A17
A7
A
EM564161
256K x 16 Low Power SRAM
Preliminary, Rev 2.6
Pin Configuration
48-Ball BGA (CSP), Top View
1
2
3
4
5
6
10/2000
LB#
OE#
A0
A1
A2
CE2
B
DQ8
UB#
A3
A4
CE1#
DQ0
C
DQ9
DQ10
A5
A6
DQ1
DQ2
DQ3
VDD
DQ4
GND
Ordering Information
Part Number
EM564161BC-70
EM564161BA-70
EM564161BA-70E
EM564161BC-85
EM564161BA-85
EM564161BA-85E
F
DQ14
DQ13
A14
A15
DQ5
DQ6
Speed
70 ns
70 ns
70 ns
85 ns
85 ns
85 ns
I
DDS2
10
µA
10
µA
80
µA
10
µA
10
µA
80
µA
Package
6x8 BGA
8x10 BGA
8x10 BGA
6x8 BGA
8x10 BGA
8x10 BGA
G
DQ15
NC
A12
A13
W E#
DQ7
H
NC
A8
A9
A10
A11
NC
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
guaranteed operating range from -40°C to 85°C, the EM564161 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.
ETRON [ ETRON TECHNOLOGY, INC. ]
