Fujitsu MPB3052AT User Manual download pdf (Page 140)

C141-E045-02EN 5 - 75

t12

t11t10

t4t3

t2i

Addresses

IORDY

IOCS16-

Read data

DD0-DD15

Write data

DD0-DD15

DIOR-/DIOW-

Symbol Timing parameter Min. Max. Unit

t0 Cycle time 120 — ns

t1 Data register selection setup time for DIOR-/DIOW- 25 — ns

t2 Pulse width of DIOR-/DIOW- 70 — ns

t2i Recovery time of DIOR-/DIOW- 25 — ns

t3 Data setup time for DIOW- 20 — ns

t4 Data hold time for DIOW- 10 — ns

t5 Time from DIOR- assertion to read data available 20 — ns

t6 Data hold time for DIOR- 5 — ns

t7 Time from Data register selection to IOCS16- assertion — 40 ns

t8 Time from Data register selection reset to IOCS16- negation — 30 ns

t9 Data register selection hold time for DIOR-/DIOW- 10 — ns

t10 Time from DIOR-/DIOW- assertion to IORDY "low" level — 35 ns

t11 Time from validity of read data to IORDY "high" level 0 — ns

t12 Pulse width of IORDY — 1,250 ns

Figure 5.9 PIO data transfer timing

1 2 ... 135 136 137 138 139 140 141 142 143 144 145 ... 179 180

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Fujitsu MPB3052AT User Manual Page 140