Epson Research and Development
Page 33
Vancouver Design Center
Hardware Functional Specification
S1D13503
Issue Date: 01/01/29
X18A-A-001-08
7.1.2 Non-MC68000, MPU/Bus With READY (or WAIT#) Signal
IOW# Timing
Figure 14: IOW# Timing (Non-MC68000)
Table 7-5: IOW# Timing (Non-MC68000)
3V/3.3V
5V
Symbol
Parameter
Min
Max
Min
Max
Units
t1
AB[9:0], BHE# and IOCS# valid before IOW# falling
edge
10
0
ns
t2
AB[9:0], BHE# and IOCS# hold from IOW# rising edge
20
10
ns
t3
DB[15:0] setup to IOW# rising edge
20
10
ns
t4
DB[15:0] hold from IOW# rising edge
20
10
ns
t5
Pulse width of IOW#
30
20
ns
AB[9:0]
IOCS#
IOW#
VALID
VALID
t2
t4
t3
t1
DB[15:0]
BHE#
t5
Hi-Z
Hi-Z
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