EM564166 Datasheet, PDF (1/11 Pages) Etron Technology, Inc. – 256K x 16 Low Power SRAM

EtronTech
EM564166
256K x 16 Low Power SRAM
Preliminary, Rev 1.0 05/2001
Features
• Single power supply voltage of 2.3V to 3.6V
• Power down features using CE#
• 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 Maximum
EM564166BC-70/85
1 µA
10 µA
EM564166BC-70E/85E
5 µA
80 µA
Pin Configuration
48-Ball BGA (CSP), Top View
1
2
3
4
5
6
A
LB# OE#
A0
A1
A2
NC
B
DQ8 UB#
A3
A4 CE# DQ0
C
DQ9 DQ10 A5
A6 DQ1 DQ2
D
GND DQ11 A17 A7
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
H
NC
A8
A9
A10 A11
NC
Part Number
EM564166BC-70
EM564166BC-85
EM564166BC-70E
EM564166BC-85E
Speed
70 ns
85 ns
70 ns
85 ns
IDDS2
10 µA
10 µA
80 µA
80 µA
Package
6x8 BGA
6x8 BGA
6x8 BGA
6x8 BGA
Pin Description
Symbol
A0 - A17
DQ0 - DQ15
CE#
OE#
WE#
LB#, UB#
GND
VDD
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 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: [phone] FAX: [phone]
Etron Technology, Inc., reserves the right to make changes to its products and specifications without notice.