Manual

Timing Diagrams
READ
EWEN/EWDS
WRITE
HT93LC56
Rev. 1.20 5 October 26, 2001
C S
S K
S t a n d b y
D I
0
( 1 )
0
S t a r t b i t
1 1 = E W E N
0 0 = E W D S
C S
S K
D O
H i g h Z H i g h - Z
0
D I
S t a r t b i t
1 ( 1 )
t
H Z
t
C D S
*
* A d d r e s s p o i n t e r a u t o m a t i c a l l y c y c l e s t o t h e n e x t w o r d
0
A N
A 0
D 0
D X
D X
M o d e
A N
D X
( X 1 6 )
A 6
D 1 5
( X 8 )
A 7
D 7
C S
S K
D O
H i g h - Z
S t a n d b y
D I
1
( 1 )
t
H Z
t
S V
t
P R
t
C D S
b u s y
r e a d y
v e r i f y
0
S t a r t b i t
A N
A N - 1
A N - 2
A 1
D 0
A 0 D X