Memory expansion mode and microprocessor mode
(with wait, accessing external memory area)
Read timing
BCLK
CSi
ADi
BHE
ALE
RD
DB
Write timing
BCLK
CSi
ADi
BHE
ALE
WR, WRL,
WRH
DBi
Figure 5.2 Memory expansion mode and microprocessor mode (with wait)
Conditions:
• V
=5V
CC
• Input timing voltage: V
• Output timing voltage: V
( 50 / 72 )
=0.8V, V
=2.5V
IL
IH
=0.8V, V
=2.0V
OL
OH