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Figure 5.2 Memory expansion mode and microprocessor mode (with wait)
VCC = 5 V
Memory expansion mode and microprocessor mode
(with wait, accessing external memory area)
Read timing
BCLK
ALE
DB
RD
ADi
BHE
Write timing
BCLK
ALE
DBi
ADi
BHE
CSi
CSi
WR, WRL,
WRH
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