EtronTech

Em614163A-30/35/40/45

Preliminary

3

April 1997

Absolute Maximum Ratings

Parameter

Symbol

Value

Unit

- 0.5 to +7.0

V

- 0.5 to +7.0

V

Short circuit output current

50

mA

Power dissipation

1.0

W

Operating temperature

0 to +70

°C

Storage temperature

- 55 to +125

°C

Capacitance

(Ta = 25

Parameter

Symbol Typ. Max. Unit

Note

Input capacitance (A0 - A8)

¡Ð

5

pF

1

Input capacitance (RAS , UCAS , LCAS , WE , OE )

¡Ð

5

pF

1

Output capacitance(I/O0 - I/O15)

¡Ð

7

pF

1

Notes:

1. Capacitance is sampled and not 100% tested.

Truth Table

Addresses

Function

RAS

LCAS UCAS

WE

OE

DQs

Notes

Standby

H

X

X

X

X

High-Z

Read: Word

L

L

L

H

L

ROW

COL

Data-out

Read: Lower Byte

L

L

H

H

L

ROW

COL

Lower byte, data-out

Upper byte, high-Z

Read: Upper Byte

L

H

L

H

L

ROW

COL

Lower byte, high-Z

Upper byte, data-out

Write: Word

(Early Write)

L

L

L

L

X

ROW

COL

Data-in

Write: Lower Byte

(Early)

L

L

H

L

X

ROW

COL

Lower byte, data-in

Upper byte, high-Z

Write: Upper Byte

(Early)

L

H

L

L

X

ROW

COL

Lower byte, high-Z

Upper byte, data-in

Read Write

L

L

L

ROW

COL

Data-out, Data-in

1, 2

EDO-Page-

1st Cycle

L

H

L

ROW

COL

Data-out

2

Mode Read

2nd Cycle

L

H

L

n/a

COL

Data-out

2

EDO-Page-

1st Cycle

L

L

X

ROW

COL

Data-in

1

Mode Write

2nd Cycle

L

L

X

n/a

COL

Data-in

1

EDO-

1st Cycle

L

ROW

COL

Data-out, Data-in

1, 2

Page-Mode

Read-Write

2nd Cycle

L

n/a

COL

Data-out, Data-in

1, 2

Hidden

Read

L

L

H

L

ROW

COL

Data-out

2

Refresh

Write

L

L

L

X

ROW

COL

Data-in

1, 3

RAS# only refresh

L

H

H

X

X

ROW

n/a

High-Z

CBR Refresh

L

L

X

X

X

X

High-Z

4

Notes:

1. These WRITE cycles may also be BYTE WRITE cycles (either LCAS or UCAS active).

2. These READ cycles may also be BYTE READ cycles (either LCAS or UCAS active).

3. EARLY WRITE only.