EM641FU16E Series
merging Memory & Logic Solutions Inc.
Low Power, 256Kx16 SRAM
FEATURES
GENERAL DESCRIPTION
• Process Technology : 0.18mm Full CMOS
• Organization : 256K x 16 bit
• Power Supply Voltage : 2.7V ~ 3.3V
• Low Data Retention Voltage : 1.5V(Min.)
• Three state output and TTL Compatible
• Package Type : 48-FPBGA 6.0x7.0
The EM641FU16E families are fabricated by EMLSI’ s
advanced full CMOS process technology. The families
support industrial temperature range and Chip Scale
Package for user flexibility of system design. The fami-
lies also supports low data retention voltage for battery
back-up operation with low data retention current.
PRODUCT FAMILY
Power Dissipation
Product
Family
Operating
Temperature
Vcc Range
Speed
PKG Type
Standby
(ISB1, Typ.)
Operating
(ICC1.Max.)
Industrial (-40 ~ 85oC)
551) /70ns
EM641FU16E
2.7V~3.3V
1 mA
2 mA
48 FPBGA
1. The parameter is measured with 30pF test load.
PIN DESCRIPTION
FUNCTIONAL BLOCK DIAGRAM
1
2
3
4
5
6
Pre-charge Circuit
A
B
C
D
E
LB
I/O9
OE
UB
A0
A3
A1
A4
A6
A7
A2 DNU
CS I/O1
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
VCC
VSS
Memory Array
I/O10 I/O11 A5
VSS I/O12 A17
I/O2 I/O3
I/O4 VCC
I/O5 VSS
I/O6 I/O7
WE I/O8
A11 DNU
2048 x 2048
VCC I/O13 DNU A16
Data
Cont
I/O1 ~ I/O8
I/O Circuit
Data
Cont
I/O9 ~ I/O16
Column Select
F
I/O15 I/O14 A14
I/O16 DNU A12
A15
A13
A10
G
H
A
11
A12 A A A15 A A
13 14 16
17
DNU A8
A9
48-FPBGA : Top view (ball down)
WE
OE
UB
LB
Control Logic
Name
Function
Name
Function
CS
CS
OE
WE
Chip select input
Output Enable input
Write Enable input
Vcc Power Supply
Vss Ground
UB Upper Byte (I/O
)
9~16
A ~A
Address Inputs
LB
Lower Byte (I/O
)
1~8
0
17
I/O ~I/O
Data Inputs/outputs
16
DNU Do Not Use
1
2
EMLSI [ Emerging Memory & Logic Solutions Inc ]
