WRITE Mode (Successive Address Writing)

Note: It is recommended that the host controller should read with the data from the DATA line

between the raising edge of the RD line and the falling edge of the next RD line.

READ-MODIFY-WRITE Mode (Command Code:101)

READ-MODIFY-WRITE Mode (Successive Address Accessing)

HT1620

Rev. 1.80

11

July 27, 2009

PATENTED

D A T A

C S

W R

1

0

1 A 5 A 4 A 3 A 2 A 1 A 0 D 0 D 1 D 2 D 3

M e m o r y A d d r e s s ( M A ) D a t a ( M A )

D 0 D 1 D 2 D 3 D 0 D 1 D 2 D 3 D 0 D 1 D 2 D 3 D 0

D a t a ( M A + 1 )

D a t a ( M A + 2 )

D a t a ( M A + 3 )

D A T A

C S

W R

1

0

1 A 5 A 4 A 3 A 2 A 1 A 0 D 0 D 1 D 2 D 3

M e m o r y A d d r e s s 1 ( M A 1 )

D a t a ( M A 1 )

A 5 A 4 A 3 A 2 A 1 A 0 D 0 D 1 D 2 D 3

M e m o r y A d d r e s s 2 ( M A 2 )

D a t a ( M A 2 )

1

0

1

R D

D 0 D 1 D 2 D 3

D a t a ( M A 1 )

D A T A

C S

W R

1

0

1 A 5 A 4 A 3 A 2 A 1 A 0 D 0 D 1 D 2 D 3

M e m o r y A d d r e s s ( M A )

D a t a ( M A )

D 0 D 1 D 2 D 3 D 0 D 1 D 2 D 3 D 0 D 1 D 2 D 3 D 0

D a t a ( M A )

D a t a ( M A + 1 )

D a t a ( M A + 1 )

R D

D 1 D 2 D 3 D 0

D a t a ( M A + 2 )