GS816273C-250/225

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

Rev: 1.03 7/2004

4/25

© 2002, GSI Technology

Note:

There is a pull-down device on the ZZ pin, so this input pin can be unconnected and the chip will operate in the default states as specified in the

above tables.

Burst Counter Sequences

BPR 1999.05.18

Mode Pin Functions

Mode Name

Pin

Name

State

Function

Burst Order Control

LBO

L

Linear Burst

H

Interleaved Burst

Power Down Control

ZZ

L or NC

Active

H

Single/Dual Cycle Deselect Control

SCD

L

Dual Cycle Deselect

H or NC

Single Cycle Deselect

FLXDrive Output Impedance Control

ZQ

L

High Drive (Low Impedance)

H or NC

Low Drive (High Impedance)

9th Bit Enable

PE

L

Activate DQPx I/Os (x18/x36

mode)

H or NC

Deactivate DQPx I/Os (x16/x32

mode)

Note:

The burst counter wraps to initial state on the 5th clock.

Note:

The burst counter wraps to initial state on the 5th clock.

Linear Burst Sequence

A[1:0] A[1:0] A[1:0] A[1:0]

1st address

00

01

10

11

2nd address

01

10

11

00

3rd address

10

11

00

01

4th address

11

00

01

10

Interleaved Burst Sequence

A[1:0] A[1:0] A[1:0] A[1:0]

1st address

00

01

10

11

2nd address

01

00

11

10

3rd address

10

11

00

01

4th address

11

10

01

00