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H8SX1663 Scheda tecnica(PDF) 248 Page - Renesas Technology Corp

Il numero della parte H8SX1663
Spiegazioni elettronici  Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series
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Produttore elettronici  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
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H8SX1663 Scheda tecnica(HTML) 248 Page - Renesas Technology Corp

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Section 6 Bus Controller (BSC)
Rev.1.00 Jun. 07, 2006 Page 196 of 1102
REJ09B0294-0100
(2) 16-Bit 3-State Access Space
Figures 6.18 to 6.20 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
DACK
D15 to D8
D7 to D0
D15 to D8
D7 to D0
LHWR
LLWR
High level
High-Z
B
φ
Bus cycle
Valid
BS
RD/
WR
Read
Write
1. n = 0 to 7
2. When RDNn = 0
3. When DKC = 0
Notes:
Figure 6.18 16-Bit 3-State Access Space Bus Timing (Byte Access for Even Address)



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