Technical information

( 56 / 76 )
Figure 5.2 Memory expansion mode and microprocessor mode (with wait)
Memory expansion mode and microprocessor mode (with wait, accessing external memory area)
Read timing
BCLK
ALE
DB
Write timing
BCLK
ALE
DBi
Conditions:
• V
CC = 5 V
• Input timing voltage: VIL = 0.8 V, VIH = 2.5 V
• Output timing voltage: VOL = 0.8 V, VOH = 2.0 V
CSi
ADi
BHE
RD
WR, WRL,
WRH
ADi
BHE
CSi