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H83069RF Datasheet(PDF) 170 Page - Renesas Technology Corp

Part # H83069RF
Description  Renesas 16-Bit Single-Chip Microcomputer
PDF  1003 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H83069RF Datasheet(HTML) 170 Page - Renesas Technology Corp

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Rev. 5.0, 09/04, page 148 of 978
16-Bit, Three-State-Access Areas
Figures 6.11 to 6.13 show the timing of bus control signals for a 16-bit, three-state-access area. In
these areas, the upper data bus (D
15 to D8) is used in accesses to even addresses and the lower data
bus (D
7 to D0) in accesses to odd addresses.
Wait states can be inserted.
Bus cycle
Even external address in area n
Valid
Invalid
Valid
High
φ
Address bus
CSn
AS
RD
D15 to D8
D7 to D0
HWR
LWR
D15 to D8
D7 to D0
Read access
Write access
Note: n = 7 to 0
T1
T2
T3
Undetermined data
Figure 6.11 Bus Control Signal Timing for 16-Bit, Three-State-Access Area (1)
(Byte Access to Even Address)



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