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H8/3028F Datasheet(PDF) 213 Page - Renesas Technology Corp

Part # H8/3028F
Description  Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
PDF  923 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8/3028F Datasheet(HTML) 213 Page - Renesas Technology Corp

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Rev. 2.00, 09/03, page 183 of 890
φ
Address bus
T1
T2
T3
Bus cycle A
RD
T1
T2
(a) Idle cycle not inserted
T1
T2
T3
Ti
T2
(b) Idle cycle inserted
T1
Simultaneous change of
RD and CSn
Possibility of mutual overlap
CSn
φ
Address bus
RD
CSn
Bus cycle B
Bus cycle A
Bus cycle B
Figure 6.47 Example of Idle Cycle Operation (5)
6.9.2
Pin States in Idle Cycle
Table 6.11 shows the pin states in an idle cycle.
Table 6.11 Pin States in Idle Cycle
Pins
Pin State
A23 to A0
Next cycle address value
D15 to D0
High impedance
CSnHigh*
UCAS, LCAS
High
AS
High
RD
High
HWR
High
LWR
High
Note: * Remains low in DRAM space RAS down mode.



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