EtronTech
EM564166
256K x 16 Low Power SRAM
Preliminary, Rev 1.0 05/2001
Features
Pin Configuration
48-Ball BGA (CSP), Top View
Single power supply voltage of 2.3V to 3.6V
Power down features using CE#
Low power dissipation
·
·
·
·
·
·
·
1
2
3
4
5
6
A
B
C
D
E
F
LB#
OE#
A0
A1
A2
NC
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
DQ8
DQ9
UB#
A3
A5
A4
A6
CE#
DQ1
DQ3
DQ4
DQ5
WE#
A11
DQ0
DQ2
VDD
GND
DQ6
DQ7
NC
DQ10
GND DQ11
A17
NC
A14
A12
A9
A7
Typical
1 mA
Maximum
10 mA
EM564166BC-70/85
VDD
DQ12
A16
A15
A13
A10
EM564166BC-70E/85E
5 mA
80 mA
DQ14 DQ13
G
H
DQ15
NC
NC
A8
Ordering Information
Part Number
Speed IDDS2
Package
6x8 BGA
6x8 BGA
6x8 BGA
6x8 BGA
EM564166BC-70
EM564166BC-85
70 ns
85 ns
10 mA
10 mA
80 mA
80 mA
Pin Description
Symbol
A0 - A17
DQ0 - DQ15
CE#
Function
Address Inputs
Data Inputs / Outputs
Chip Enable Inputs
Output Enable
EM564166BC-70E 70 ns
EM564166BC-85E 85 ns
OE#
WE#
LB#, UB#
GND
Read / Write Control Input
Data Byte Control Inputs
Ground
V
DD
Power Supply
NC
No Connection
Overview
The EM564166 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 (CE#) is asserted high. There are two control inputs. CE# 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 EM564166 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.