TC55VEM316AXBN40,55

2002-07-23

1/14

TENTATIVE

TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS

524,288-WORD BY 16-BIT FULL CMOS STATIC RAM

DESCRIPTION

The TC55VEM316AXBN is a 8,388,608-bit static random access memory (SRAM) organized as 524,288 words by

16 bits. Fabricated using Toshiba's CMOS Silicon gate process technology, this device operates from a single 2.3 to

3.6 V power supply. Advanced circuit technology provides both high speed and low power at an operating current of

3 mA/MHz and a minimum cycle time of 40 ns. It is automatically placed in low-power mode at 0.7 µA standby

are three control inputs. CE1 and CE2 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 extreme temperature range of −40° to 85°C, the

TC55VEM316AXBN can be used in environments exhibiting extreme temperature conditions. The

TC55VEM316AXBN is available in a plastic 48-ball BGA.

FEATURES

• Low-power dissipation

Operating: 9 mW/MHz (typical)

• Single power supply voltage of 2.3 to 3.6 V

• Power down features using CE1 and CE2

• Data retention supply voltage of 1.5 to 3.6 V

• Direct TTL compatibility for all inputs and outputs

• Wide operating temperature range of −40° to 85°C

• Standby Current (maximum):

3.6 V

10

µA

3.0 V

5

µA

PIN NAMES

48 PIN BGA

A0~A18

Address Inputs

1

CE

, CE2

Chip Enable

R/W

Read/Write Control

OE

Output Enable

Data Byte Control

I/O1~I/O16

Data Inputs/Outputs

Power

GND

Ground

NC

No Connection

OP*

Option

*: OP pin must be open or connected to GND.

• Access Times:

TC55VEM316AXBN

40

55

Access Time

40 ns

55 ns

1

CE

Access Time

40 ns

55 ns

CE2

Access Time

40 ns

55 ns

OE

Access Time

25 ns

30 ns

• Package:

P-TFBGA48-0811-0.75BZ (Weight:

g typ)

A

B

C

D

E

F

G

H

1

OE

UB

I/O11

I/O12

I/O13

I/O14

NC

A8

A0

A3

A5

A17

OP

A14

A12

A9

A1

A4

A6

A7

A16

A15

A13

A10

A2

1

CE

I/O2

I/O4

I/O5

I/O6

R/W

A11

CE2

I/O1

I/O3

I/O7

I/O8

NC

LB

I/O9

I/O10

I/O15

I/O16

A18

2

3

4

5

6