NEC uPD78056Y - Manual (Page 520)

520
CHAPTER 22 EXTERNAL DEVICE EXPANSION FUNCTION
Figure 22-5. External Memory Read Timing
(a) No wait (PW1, PW0 = 0, 0) setting
(b) Wait (PW1, PW0 = 0, 1) setting
(c) External wait (PW1, PW0 = 1, 1) setting
ASTB
RD
Lower Address Read Data AD0-AD7
A8-A15 Higher Address
WAIT
ASTB
RD
AD0-AD7
A8-A15
Lower Address Read Data
Higher Address
Internal Wait Signal
(1-clock wait)
Higher Address
ASTB
RD
AD0-AD7
A8-A15
Lower Address Read Data