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H8/3003 Datasheet(PDF) 499 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) 499 Page - Renesas Technology Corp

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Restrictions on Usage of DMAC
•
When an external clock source is used for the serial clock, after the DMAC updates TDR,
allow an interval of at least five system clock (ø) cycles before input of the serial clock to start
transmitting. If the serial clock is input within four states of the TDR update, a malfunction
may occur. (See figure 13-22.)
•
To have the DMAC read RDR, be sure to select the SCI receive-data-full interrupt (RXI) as
the activation source with bits DTS2 to DTS0 in DTCR.
Figure 13-22 Synchronous Transmission Using DMAC (Example)
In operation with an external clock source, be sure to be t
> 4 states.
SCK
TDRE
t
D0
D1
D2
D3
D4
D5
D6
D7
Note:
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