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4-86 C156-E227-01EN
Table 4.118 Register/PIO data transfer timing parameters
Symbol Timing parameter min
(Units: ns)
max
(Units: ns)
Condition
t0 Cycle time 120 - At mode 4,
no wait
t1 DIOR-/DIOW- setup time 25 -
t2 DIOR-/DIOW- pulse width 70 -
t2i DIOR-/DIOW- recovery time 25 -
t3 DIOW- data setup time 20 -
t4 DIOW- data hold time 10 -
t5 DIOR- data setup time 20 -
t6 DIOR- data hold time 5 -
t6Z DIOR- data High –Z time - 30
t7 From address decided to IOCS16- asserted - 30
t8 From address decided to IOCS16- released - 30
t9 DIOR-DIOW- to address valid hold time 10 -
tA IORDY setup time - 35 PIO flow
control
transfer mode
tB IORDY pulse width - 1250 PIO flow
control
transfer mode
tRd Read data valid to IORDY active 0 -