K7R643682M

K7R641882M

K7R640982M

- 10 -

Rev. 1.3 March 2007

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. x9 device operation is similar except that

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.

K

R

W

D

Q

OPERATION

D(A0)

D(A1)

Q(A0)

Q(A1)

Stopped

X

X

Previous state

Previous state

Previous state

Previous state

Clock Stop

↑

H

H

X

X

High-Z

High-Z

No Operation

↑

LX

X

X

Read

↑

X

L

Din at K(t)

Din at K(t)

X

X

Write