NEC 78014Y Series User Manual page 479

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CHAPTER 19 EXTERNAL DEVICE EXPANSION FUNCTION
Figure 19-4. External Memory Read Timing
(a) When without Wait (PW1, PW0 = 0, 0) Setup
ASTB
RD
AD0 to AD7
A8 to A15
(b) When with Wait (PW1, PW0 = 0, 1) Setup
ASTB
RD
AD0 to AD7
A8 to A15
Internal wait signal
(1-clock wait)
(c) When External Wait (PW1, PW0 = 1, 1) Setup
ASTB
RD
AD0 to AD7
A8 to A15
WAIT
Low-order
Read data
address
High-order address
Low-order
Read data
address
High-order address
Low-order
Read data
address
High-order address
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