Rev. 3.0, 10/02, page 137 of 686
Figure 6.25 shows the timing for transition to the bus-released state.
CPU
cycle
Address
Minimum
1 state
T
0
T
1
T
2
,
High impedance
High impedance
High impedance
High impedance
High impedance
High impedance
Data bus
Address bus
[1]
[2]
[3]
[4]
[5]
[1]
Low level of
pin is sampled at rise of T
2
state.
[2]
pin is driven low at end of CPU read cycle, releasing bus to external bus
master.
[3]
pin state is still sampled in external bus released state.
[4]
High level of
pin is sampled.
[5]
pin is driven high, ending bus release cycle.
CPU cycle
External bus released state
Note : n = 0 to 7
Figure 6.25 Bus-Released State Transition Timing
Содержание H8S/2215 Series
Страница 4: ...Rev 3 0 10 02 page iv of lviii ...
Страница 6: ...Rev 3 0 10 02 page vi of lviii ...
Страница 28: ...Rev 3 0 10 02 page xxviii of lviii ...
Страница 122: ...Rev 3 0 10 02 page 64 of 686 ...
Страница 132: ...Rev 3 0 10 02 page 74 of 686 ...
Страница 156: ...Rev 3 0 10 02 page 98 of 686 ...
Страница 198: ...Rev 3 0 10 02 page 140 of 686 ...
Страница 320: ...Rev 3 0 10 02 page 262 of 686 ...
Страница 384: ...Rev 3 0 10 02 page 326 of 686 ...
Страница 474: ...Rev 3 0 10 02 page 416 of 686 ...
Страница 481: ...Rev 3 0 10 02 page 423 of 686 I O pin Control OUT IN TDI pin TDO pin Figure 14 2 Boundary Scan Register Configuration ...
Страница 608: ...Rev 3 0 10 02 page 550 of 686 ...
Страница 614: ...Rev 3 0 10 02 page 556 of 686 ...
Страница 650: ...Rev 3 0 10 02 page 592 of 686 ...
Страница 652: ...Rev 3 0 10 02 page 594 of 686 ...
Страница 680: ...Rev 3 0 10 02 page 622 of 686 ...
Страница 721: ...Rev 3 0 10 02 page 663 of 686 ø A23 to A0 to tBRQS tBACD tBZD tBACD tBZD tBRQS Figure 24 11 External Bus Release Timing ...
Страница 732: ...Rev 3 0 10 02 page 674 of 686 ...
Страница 740: ...Rev 3 0 10 02 page 682 of 686 ...