Section 6
Bus Controller (BSC)
Rev.2.00 Jun. 28, 2007 Page 171 of 666
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16-Bit 3-State Access Space
Figures 6.17 to 6.19 show the bus timing of 16-bit 3-state access space.
When accessing 16-bit access space, the upper byte data bus (D15 to D8) is used for even
addresses, and the lower byte data bus (D7 to D0) is used for odd addresses. Wait cycles can be
inserted.
Valid
Invalid
T
1
T
2
T
3
Address
CSn
AS
RD
High level
High-Z
B
φ
Bus cycle
Valid
D15 to D8
D7 to D0
D15 to D8
D7 to D0
LHWR
LLWR
Read
Write
BS
RD/
WR
Notes: 1. n = 0 to 7
2. When RDNn = 0
Figure 6.17 16-Bit 3-State Access Space Bus Timing
(Byte Access for Even Address)
Содержание H8SX/1650
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Страница 106: ...Section 4 Exception Handling Rev 2 00 Jun 28 2007 Page 84 of 666 REJ09B0311 0200...
Страница 142: ...Section 5 Interrupt Controller Rev 2 00 Jun 28 2007 Page 120 of 666 REJ09B0311 0200...
Страница 326: ...Section 8 I O Ports Rev 2 00 Jun 28 2007 Page 304 of 666 REJ09B0311 0200...
Страница 470: ...Section 12 Watchdog Timer WDT Rev 2 00 Jun 28 2007 Page 448 of 666 REJ09B0311 0200...
Страница 546: ...Section 13 Serial Communication Interface SCI Rev 2 00 Jun 28 2007 Page 524 of 666 REJ09B0311 0200...
Страница 566: ...Section 14 A D Converter Rev 2 00 Jun 28 2007 Page 544 of 666 REJ09B0311 0200...
Страница 574: ...Section 16 RAM Rev 2 00 Jun 28 2007 Page 552 of 666 REJ09B0311 0200...
Страница 584: ...Section 17 Clock Pulse Generator Rev 2 00 Jun 28 2007 Page 562 of 666 REJ09B0311 0200...
Страница 638: ...Section 19 List of Registers Rev 2 00 Jun 28 2007 Page 616 of 666 REJ09B0311 0200...
Страница 668: ...Section 20 Electrical Characteristics Rev 2 00 Jun 28 2007 Page 646 of 666 REJ09B0311 0200...
Страница 676: ...Appendix Rev 2 00 Jun 28 2007 Page 654 of 666 REJ09B0311 0200...
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Страница 692: ...H8SX 1650 Group Hardware Manual...