Mosel Vitelic V61C3181024-15T, V61C3181024-15R, V61C3181024-12T, V61C3181024-12R, V61C3181024-10T Datasheet

MOSEL VITELIC

1

V61C3181024
128K X 8 HIGH SPEED
STATIC RAM

PRELIMINARY

V61C3181024 Rev. 1.3 February 1999

Features

■

High-speed: 10, 12, 15 ns

■

Fully static operation

■

All inputs and outputs directly TTL compatible

■

Three state outputs

■

Low data retention current (V

CC

= 2V)

■

Single 3.3V ± 0.3 Power Supply

■

Low CMOS Standby current of 5 mA max

■

Packages
– 32-pin TSOP
– 32-pin 300 mil SOJ

Description

The V61C3181024 is a 1,048,576-bit static
random-access memory organized as 131,072
words by 8 bits. Inputs and three-state outputs are
TTL compatible and allow for direct interfacing
with common system bus structures. The
V61C3181024 is available in 32-pin SOJ and
TSOP.

Device Usage Chart

Operating

Temperature

Range

Package Outline Access Time (ns)

Temperature

MarkT R 10 12 15

0 °

C to 70 ° C ••••• Blank

Functional Block Diagram

Row

Decoder

Memory Array

Input
Data

Circuit

Column I/O

Column Decoder

Control

Circuit

V

CC

GND

A

0

3181024 01

A

8

I/O

0

I/O

7

CE

2

OE

WE

CE

1

A

9

A

16

2

V61C3181024 Rev. 1.3 February 1999

MOSEL VITELIC

V61C3181024

Pin Descriptions

A

0

–A

16

Address Inputs

These 17 address inputs select one of the 128K x 8
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. When OE
is LOW with CE LOW and WE HIGH, data of the
selected memory location will be available on the
I/O pins. When OE is HIGH, the I/O pins will be in
the high impedance state.

WE

Write Enable Input

An active LOW input, WE input controls read and
write operations. When CE and WE inputs are both
LOW, the data present on the I/O pins will be
written into the selected memory location.

I/O

0

–I/O

7

Data Input and Data Output Ports

These 8 bidirectional ports are used to read data
from and write data into the RAM.

V

CC

Power Supply

GND Ground

Pin Configurations (Top View)

32-Pin SOJ 32-Pin TSOP-I

1 32

3181024 02

2

31

3

30
4 29
5 28
6

27
7

26
8 25
9 24
10

23
11

22
12 21
13 20
14 19
15

18
16

17

A

10

A

9

A

8

A

7

A

6

A

5

A

4

A

3

A

2

A

1

A

0

I/O

0

I/O

1

I/O

2

GND

NC

A

11

CE

2

WE
A

12

A

13

A

14

A

15

OE
A

16

CE

1

I/O

7

I/O

6

I/O

5

I/O

4

I/O

3

V

CC

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17

3181024 03

A15
A14
A13
A12

A11

VCC

NC

A10

A9
A8
A7
A6
A5
A4

A16

CE2

WE

I/O6

I/O7
I/O5

I/O4
I/O3

OE

I/O1

I/O2

VSS

CE1

I/O0
A0
A1
A2
A3

MOSEL VITELIC

V61C3181024

3

V61C3181024 Rev. 1.3 February 1999

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 Units

V

N

Input Voltage -0.5 to V

CC

+ 0.5 V

V

DQ

Input/Output Voltage Applied V

CC

+ 0.5 V

T

BIAS

Temperature Under Bias -10 to +125

°

C

T

STG

Storage Temperature -65 to +150

°

C

SRAM

FAMILY

C = CMOS PROCESS

61 = HIGH SPEED

31 = 3.3V

OPERATING

VOLTAGE

1024K

ORGANIZATION

PKG

SPEED

3181024 05

PWR.

61 C 831 1024 –

MOSEL-VITELIC

V

8 = 8-bit

10 ns
12 ns
15 ns

TEMP.

BLANK = 0°C to 70°C

BLANK = STANDARD

T = TSOP STANDARD
R = 300 mil SOJ

DENSITY

Capacitance*

T

A

= 25 ° C, f = 1.0MHz

NOTE:

1. This parameter is guaranteed by design and not tested.

Truth Table

NOTE:

X = Don’t Care, L = LOW, H = HIGH

Symbol Parameter Conditions Max. Unit

C

IN

Input Capacitance V

IN

= 0V 6 pF

C

OUT

Output Capacitance V

I/O

= 0V 8 pF

Mode CE

1

CE

2

OE

WE

I/O

Operation

Standby H X X X High Z
Standby X L X X High Z

Output Disable L H H H High Z

Read L H L H D

OUT

Write L H X L D

IN