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H8/3003 Datasheet(PDF) 150 Page - Renesas Technology Corp

Part # H8/3003
Description  microcontroller (MCU)
PDF  715 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8/3003 Datasheet(HTML) 150 Page - Renesas Technology Corp

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6.4 Usage Notes
6.4.1 Connection to Dynamic RAM and Pseudo-Static RAM
A different bus control signal timing applies when dynamic RAM or pseudo-static RAM is
connected to area 3. For details see section 7, Refresh Controller.
6.4.2 Register Write Timing
ABWCR, ASTCR, and WCER Write Timing: Data written to ABWCR, ASTCR, or WCER
takes effect starting from the next bus cycle. Figure 6-20 shows the timing when an instruction
fetched from area 0 changes area 0 from three-state access to two-state access.
Figure 6-20 ASTCR Write Timing
ø
Address
T1
T2
T3
T1
T2
T3
T1
T2
ASTCR address
3-state access to area 0
2-state access
to area 0
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