[11]?
?
MPU?Interface?
When?DL?is?set?for?8‐bit?mode,?the?display?interfaces?with?the?MPU?with?DB7...DB0?(DB7?is?the?MSB).?
When?DL?is?set?for?4‐bit?mode,?the?display?interfaces?with?the?MPU?with?only?DB7...DB4?(DB7?is?the?MSB).?Each?
instruction?must?be?sent?in?two?operations,?the?4?high‐order?bits?first,?followed?by?the?4?low‐order?bits.?The?Busy?Flag?
must?be?checked?after?completion?of?the?entire?8‐bit?instruction.??
?
6800‐MPU?Parallel?Interface?(default)?
?
?
?
?
Item?
Signal?
Symbol
Min.
Typ.
Max.
Unit
Note?
Address?setup?time?
RS?
tAS68
20
‐‐ns
?
Address?hold?time?
RS?
tAH68
0
‐‐ns
?
System?cycle?time??tCY68
500
‐‐ns
?
Pulse?width?(write)?
E?
tPW68(W)
250
‐‐ns
?
Pulse?width?(read)?
E?
tPW68(R)
250
‐‐ns
?
Data?setup?time?
DB7...DB0?
tDS68
40
‐‐ns
?
Data?hold?time?
DB7...DB0?
tDH68
20
‐‐ns
?
Read?access?time?
DB7...DB0?
tACC68
‐‐180
ns
CL=100pF?
Output?disable?time?
DB7...DB0?
tOD68
10
‐‐ns
?
?
?
?
?
?
?