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Rev. 5.0 July 2006

K7R163684B

K7R161884B

Notes: 1. X means “Don

′t Care”.

2. All inputs in this table must meet setup and hold time around the rising edge of input clock K or K (

↑ ).

3. Assumes a WRITE cycle was initiated.

4. This table illustrates operation for x18 devices.

K

K

OPERATION

↑

L

L

WRITE ALL BYTEs ( K

↑ )

↑

L

L

WRITE ALL BYTEs ( K

↑ )

↑

L

H

WRITE BYTE 0 ( K

↑ )

↑

L

H

WRITE BYTE 0 ( K

↑ )

↑

H

L

WRITE BYTE 1 ( K

↑ )

↑

H

L

WRITE BYTE 1 ( K

↑ )

↑

H

H

WRITE NOTHING ( K

↑ )

↑

H

H

WRITE NOTHING ( K

↑ )

Notes: 1. X means “Don

′t Care”.

2. All inputs in this table must meet setup and hold time around the rising edge of input clock K or K (

↑ ).

3. Assumes a WRITE cycle was initiated.

K

K

OPERATION

↑

LLLL

WRITE ALL BYTEs ( K

↑ )

↑

LLLL

WRITE ALL BYTEs ( K

↑ )

↑

L

H

H

H

WRITE BYTE 0 ( K

↑ )

↑

L

H

H

H

WRITE BYTE 0 ( K

↑ )

↑

H

L

H

H

WRITE BYTE 1 ( K

↑ )

↑

H

L

H

H

WRITE BYTE 1 ( K

↑ )

↑

H

H

L

L

WRITE BYTE 2 and BYTE 3 ( K

↑ )

↑

H

H

L

L

WRITE BYTE 2 and BYTE 3 ( K

↑ )

↑

HHHH

WRITE NOTHING ( K

↑ )

↑

HHHH

WRITE NOTHING ( K

↑ )

TRUTH TABLES

SYNCHRONOUS TRUTH TABLE

Notes: 1. X means “Don

′t Care”.

2. The rising edge of clock is symbolized by (

↑ ).

3. Before enter into clock stop status, all pending read and write operations will be completed.

4. This signal was HIGH on previous K clock rising edge. Initiating consecutive READ or WRITE operations on consecutive K clock rising edges

is not permitted. The device will ignore the second request.

5. If this signal was LOW to initiated the previous cycle, this signal becomes a don

′t care for this operation however it is strongly recommended

that this signal is brought HIGH as shown in the truth table.

K

R

W

D

Q

OPERATION

D(A1)

D(A2)

D(A3)

D(A4)

Q(A1)

Q(A2)

Q(A3)

Q(A4)

Stopped

X

X

Previous

state

Previous

state

Previous

state

Previous

state

Previous

state

Previous

state

Previous

state

Previous

state

Clock Stop

↑

H

H

X

X

X

X

High-Z

High-Z

High-Z

High-Z

No Operation

↑

XX

X

X

X

at C(t+1)

at C(t+2)

at C(t+2)

at C(t+3)

Read

↑

Din

at K(t+1)

Din

at K(t+1)

Din

at K(t+2)

Din

at K(t+2)

XX

X

X

Write