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H8S/2214 数据表(PDF) 207 Page - Renesas Technology Corp

部件名 H8S/2214
功能描述  16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series
PDF  936 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

H8S/2214 数据表(HTML) 207 Page - Renesas Technology Corp

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Section 6 Bus Controller
Rev.4.00 Sep. 18, 2008 Page 147 of 872
REJ09B0189-0400
(4) 16-Bit 3-State Access Space
Figures 6.11 to 6.13 show bus timings for a 16-bit 3-state access space. When a 16-bit access
space is accessed, the upper half (D15 to D8) of the data bus is used for the even address, and the
lower half (D7 to D0) for the odd address.
Wait states can be inserted.
Bus cycle
T1
T2
Address bus
φ
CSn
AS
RD
D15 to D8
Valid
D7 to D0
Invalid
Read
HWR
LWR
D15 to D8
Valid
D7 to D0
High impedance
Write
High
Note: n = 0 to 7
T3
Figure 6.11 Bus Timing for 16-Bit 3-State Access Space (Even Address Byte Access)



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