IC61S25632T/D IC61S25636T/D

IC61S51218T/D

10

Integrated Circuit Solution Inc.

SSR014-0B 08/13/2002

Note:

There are pull-up devices on the MODE, XQ, and SCD pins and a pull down device on the ZZ pin, so those input pins can be unconnected

and the chip will operate in the default states as specified in the above table.

TRUTH TABLE

Address

Operation

Used

CE

CE

CE

CE

CE CE2 CE2

CE2

CE2

CE2

CE2

ADSP

ADSP

ADSP

ADSP

ADSP

ADSC

ADSC

ADSC

ADSC

ADSC

ADV

ADV

ADV

ADV

ADV

WRITE

WRITE

WRITE

WRITE

WRITE

OE

OE

OE

OE

OE

DQ

Deselected, Power-down

None

H

X

X

X

L

X

X

X High-Z

Deselected, Power-down

None

L

X

H

L

X

X

X

X High-Z

Deselected, Power-down

None

L

L

X

L

X

X

X

X High-Z

Deselected, Power-down

None

L

X

H

H

L

X

X

X High-Z

Deselected, Power-down

None

L

L

X

H

L

X

X

X High-Z

Read Cycle, Begin Burst

External

L

H

L

L

X

X

X

X

Q

Read Cycle, Begin Burst

External

L

H

L

H

L

X

Read

X

Q

Write Cycle, Begin Burst

External

L

H

L

H

L

X

Write

X

D

Read Cycle, Continue Burst

Next

X

X

X

H

H

L

Read

L

Q

Read Cycle, Continue Burst

Next

X

X

X

H

H

L

Read

H High-Z

Read Cycle, Continue Burst

Next

H

X

X

X

H

L

Read

L

Q

Read Cycle, Continue Burst

Next

H

X

X

X

H

L

Read

H High-Z

Write Cycle, Continue Burst

Next

X

X

X

H

H

L

Write

X

D

Write Cycle, Continue Burst

Next

H

X

X

X

H

L

Write

X

D

Read Cycle, Suspend Burst

Current

X

X

X

H

H

H

Read

L

Q

Read Cycle, Suspend Burst

Current

X

X

X

H

H

H

Read

H High-Z

Read Cycle, Suspend Burst

Current

H

X

X

X

H

H

Read

L

Q

Read Cycle, Suspend Burst

Current

H

X

X

X

H

H

Read

H High-Z

Write Cycle, Suspend Burst

Current

X

X

X

H

H

H

Write

X

D

Write Cycle, Suspend Burst

Current

H

X

X

X

H

H

Write

X

D

PARTIAL TRUTH TABLE

Function

GW

GW

GW

GW

GW

BWE

BWE

BWE

BWE

BWE BWa

BWa

BWa

BWa

BWa BW

BW

BW

BW

BWb

bb

bb BWc

BWc

BWc

BWc

BWc BWd

BWd

BWd

BWd

BWd

Read

H

H

X

X

X

X

Read

H

L

H

H

H

H

Write Byte 1

H

L

L

H

H

H

Write All Bytes

H

L

L

L

L

L

Write All Bytes

L

X

X

X

X

X

Mode Pin Functions

Mode Name

Pin Name

State

Function

Burst Order Control

MODE

L

Linear Burst

H or NC

Interleaved Burst

Power Down Control

ZZ

L or NC

Active

H

Standby

Single/DualCycleDeselectControl

SCD

L

Dual Cycle Deselect

H or NC

Single Cycle Deselect

Output Drive Control

XQ

L

High Drive (Low Impedance)

H

Low Drive (High Impedance)