NEC 78014Y Series User Manual page 480

ASTB
WR
AD0 to AD7
A8 to A15
ASTB
WR
AD0 to AD7
A8 to A15
Internal wait signal
(1-clock wait)
ASTB
www.DataSheet4U.com
WR
AD0 to AD7
A8 to A15
WAIT
480
CHAPTER 19 EXTERNAL DEVICE EXPANSION FUNCTION
Figure 19-5. External Memory Write Timing
(a) When without Wait (PW1, PW0 = 0, 0) Setup
Hi-Z
Low-order
address
(b) When with Wait (PW1, PW0 = 0, 1) Setup
Hi-Z
Low-order
address
(c) When External Wait (PW1, PW0 = 1, 1) Setup
Hi-Z
Low-order
address
Write data
High-order address
High-order address
High-order address
Write data
Write data