Rainbow Electronics HT93LC66 - Manual (Page 5)

Timing Diagrams
READ
EWEN/EWDS
WRITE
ERASE
HT93LC66
Rev. 1.20 5 October 29, 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 7
D 1 5
( X 8 )
A 8
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
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
1
S t a r t b i t
A N A N - 1 A N - 2 A 1 A 0