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HD64F2149YV 数据表(PDF) 184 Page - Renesas Technology Corp

部件名 HD64F2149YV
功能描述  Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series
PDF  1075 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

HD64F2149YV 数据表(HTML) 184 Page - Renesas Technology Corp

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Section 6 Bus Controller
Rev. 3.00 Jan 18, 2006 page 156 of 1044
REJ09B0280-0300
16-Bit, 3-State Access Space: Figures 6.10 to 6.12 show the bus timing for 16-bit, 3-state access
space. When 16-bit access space is accessed, the upper data bus (D15 to D8) is used for even
addresses and the lower data bus (D7 to D0) for odd addresses.
Wait states can be inserted.
Bus cycle
T1
T2
Address bus
φ
AS/IOS (IOSE = 1)
AS/IOS (IOSE = 0)
RD
D15 to D8
Valid
D7 to D0
Invalid
Read
HWR
LWR
D15 to D8
Valid
D7 to D0
Undefined
Write
High
T3
Figure 6.10 16-Bit, 3-State Access Space Bus Timing (1)
(Even Address Byte Access)



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