MOSEL VITELIC
1
V62C18164096
256K x 16, CMOS STATIC RAM
PRELIMINARY
V62C18164096 Rev. 1.2 June 2000
Features
■
High-speed: 85, 100 ns
■
Ultra low CMOS standby current of 2 µ A (max.)
■
Fully static operation
■
All inputs and outputs directly TTL compatible
■
Three state outputs
■
Ultra low data retention current (V
CC
= 1.0V)
■
Operating voltage: 1.8V – 2.3V
■
Packages
– 48-Ball CSP BGA (8mm x 10mm)
Description
The V62C18164096 is a 4,194,304-bit static
random-access memory organized as 262,144
words by 16 bits. Inputs and three-state outputs are
TTL compatible and allow for direct interfacing with
common system bus structures.
Device Usage Chart
Operating Temperature
Range
Package Outline Access Time (ns) Power
Temperature
MarkB 85 100 L LL
0 °
C to 70 ° C • • • • • Blank
–40 ° C to +85 ° C••• •I
Functional Block Diagram
Row
Decoder
1024 x 4096
Memory Array
Input
Data
Circuit
Column I/O
Column Decoder
Control
Circuit
V
CC
GND
A
0
A
8
A
9
A
7
A
6
I/O
1
I/O
16
LBE
OE
WE
UBE
A
10
A
17
CE
1
CE
2
2
V62C18164096 Rev. 1.2 June 2000
MOSEL VITELIC
V62C18164096
Pin Descriptions
A
0
–A
17
Address Inputs
These 18 address inputs select one of the 256K x
16 bit segments in the RAM.
CE
1
, CE
2
Chip Enable Inputs
CE
1
is active LOW and CE
2
is active HIGH. Both
chip enables must be active to read from or write to
the device. If either chip enable is not active, the
device is deselected and is in a standby power
mode. The I/O pins will be in the high-impedance
state when deselected.
OE
Output Enable Input
The output enable input is active LOW. With the
chip enabled, when OE is Low and WE High, data
will be presented on the I/O pins. The I/O pins will
be in the high impedance state when OE is High.
UBE, LBE Byte Enable
Active low inputs. These inputs are used to enable
the upper or lower data byte.
WE Write Enable Input
The write enable input is active LOW and controls
read and write operations. With the chip enabled,
when WE is HIGH and OE is LOW, output data will
be present at the I/O pins; when WE is LOW and
OE is HIGH, the data present on the I/O pins will be
written into the selected memory locations.
I/O
1
–I/O
16
Data Input and Data Output Ports
These 16 bidirectional ports are used to read data
from and write data into the RAM.
V
CC
Power Supply
GND Ground
Pin Configurations (Top View)
48 BGA
A
123456 1
Note: NC means no connect.
23456
B
C
D
E
F
G
H
TOP VIEW
TOP VIEW
A
BLE
I/O9
I/O10
B
C
D
E
F
G
H
VSS
VCC
I/O15
I/O16
NC
OE
BHE
I/O11
I/O12
I/O13
I/O14
NC
A8
A0
A3
A5
A17
NC
A14
A12
A9
A1
A4
A6
A7
A16
A15
A13
A10
A2
CE
1
I/O2
I/O4
I/O5
I/O6
WE
A11
CE
2
I/O1
I/O3
VCC
VSS
I/O7
I/O8
NC
MOSEL VITELIC
V62C18164096
3
V62C18164096 Rev. 1.2 June 2000
Part Number Information
Absolute Maximum Ratings
(1)
NOTE:
1. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of
this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
Symbol Parameter Commercial Industrial Units
V
CC
Supply Voltage -0.5 to V
CC
+ 0.5 -0.5 to V
CC
+ 0.5 V
V
N
Input Voltage -0.5 to V
CC
+ 0.5 -0.5 to V
CC
+ 0.5 V
V
DQ
Input/Output Voltage Applied V
CC
+ 0.3 V
CC
+ 0.3 V
T
BIAS
Temperature Under Bias -10 to +125 -65 to +135
°
C
T
STG
Storage Temperature -55 to +125 -65 to +150
°
C
SRAM
FAMILY
C = CMOS PROCESS
62 = STANDARD
18 = 1.8V – 2.3V
OPERATING
VOLTAGE
4096K
ORGANIZATION
PKGSPEED
62 C 1618 4096 –
MOSEL-VITELIC
MANUFACTURED
V
16 = 16-bit
85 ns
100 ns
TEMP.
BLANK = 0°C to 70°C
I = -40°C to +85°C
B = BGA
DENSITY
PWR.
L = LOW POWER
LL = DOUBLE LOW POWER
Capacitance*
T
A
= 25 ° C, f = 1.0MHz
NOTE:
1. This parameter is guaranteed and not tested.
Symbol Parameter Conditions Max. Unit
C
IN
Input Capacitance V
IN
= 0V 6 pF
C
OUT
Output Capacitance V
I/O
= 0V 8 pF
Truth Table
NOTE:
X = Don’t Care, L = LOW, H = HIGH
Mode CE
1
CE
2
OE
WE UBE LBE
I/O
9-16
Operation
I/O
1-8
Operation
Standby H X X X X X High Z High Z
Standby X L X X X X High Z High Z
Output Disable L H X X H H High Z High Z
Output Disable L H H H X X High Z High Z
Read LHLHL L D
OUT
D
OUT
Read LHLHL H D
OUT
High Z
Read LHLHH L High Z D
OUT
Write L H X L L L D
IN
D
IN
Write L H X L L H D
IN
High Z
Write L H X L H L High Z D
IN