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H83065 Datasheet(PDF) 178 Page - Renesas Technology Corp

Part # H83065
Description  Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
PDF  963 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H83065 Datasheet(HTML) 178 Page - Renesas Technology Corp

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Section 6 Bus Controller
Rev. 4.00 Jan 26, 2006 page 156 of 938
REJ09B0276-0400
6.4.5
Basic Bus Control Signal Timing
8-Bit, Three-State-Access Areas
Figure 6.9 shows the timing of bus control signals for an 8-bit, three-state-access area. The upper
data bus (D
15 to D8) is used in accesses to these areas. The LWR pin is always high. Wait states can
be inserted.
Bus cycle
External address in area n
Valid
Invalid
Valid
Undetermined data
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
Figure 6.9 Bus Control Signal Timing for 8-Bit, Three-State-Access Area



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