Memory expansion mode and microprocessor mode
(with wait, accessing external memory area and using multiplex bus)
Read timing
BCLK
CSi
ADi
DBi
ADi
BHI
ALE
RD
Write timing
BCLK
CSi
ADi
DBi
ADi
BHI
ALE
WR, WRL,
WRH
Figure 5.3 Memory expansion mode and microprocessor mode (with wait, multiplex bus)
Conditions:
• V
=5V
CC
• Input timing voltage: V
• Output timing voltage: V
( 52 / 72 )
=0.8V, V
=2.5V
IL
IH
=0.8V, V
=2.0V
OL
OH