- 8 -

Rev 1.1

Aug. 2010

K7Q163664B

K7Q161864B

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(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

↑

L

X

XX

XX

at C(t+1)

at C(t+1)

at C(t+2)

at C(t+2)

Read

↑

HL

Din

at K(t+1)

Din

at K(t+1)

Din

at K(t+2)

Din

at K(t+2)

XX

X

X

Write

Notes: 1. X means "Don

′t Care".

2. All inputs in this table must meet setup and hold time around the rising edge of CLK(

↑ ).

K

K

W

OPERATION

↑

H

X

X

READ/NOP

↑

H

X

X

READ/NOP

↑

L

L

L

WRITE ALL BYTEs ( K

↑ )

↑

L

L

L

WRITE ALL BYTEs ( K

↑ )

↑

L

L

H

WRITE BYTE 0 ( K

↑ )

↑

L

L

H

WRITE BYTE 0 ( K

↑ )

↑

L

H

L

WRITE BYTE 1 ( K

↑ )

↑

L

H

L

WRITE BYTE 1 ( K

↑ )

↑

L

H

H

WRITE NOTHING ( K

↑ )

↑

L

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 CLK(

↑ ).

K

K

W

OPERATION

↑

H

XXXX

READ/NOP

↑

H

XXXX

READ/NOP

↑

LLL

LL

WRITE ALL BYTEs ( K

↑ )

↑

LLL

LL

WRITE ALL BYTEs ( K

↑ )

↑

L

L

H

H

H

WRITE BYTE 0 ( K

↑ )

↑

L

L

H

H

H

WRITE BYTE 0 ( K

↑ )

↑

L

H

L

H

H

WRITE BYTE 1 ( K

↑ )

↑

L

H

L

H

H

WRITE BYTE 1 ( K

↑ )

↑

L

H

H

L

L

WRITE BYTE 2 and BYTE 3 ( K

↑ )

↑

L

H

H

L

L

WRITE BYTE 2 and BYTE 3 ( K

↑ )

↑

L

H

H

H

H

WRITE NOTHING ( K

↑ )

↑

L

H

H

H

H

WRITE NOTHING ( K

↑ )