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7721 Datasheet(PDF) 450 Page - Renesas Technology Corp

Part # 7721
Description  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  577 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7721 Datasheet(HTML) 450 Page - Renesas Technology Corp

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APPLICATION
7721 Group User’s Manual
16–47
16.2 Examples of using DMA controller
b7
b0
P43 output : L level
0
b7
b0
DMA0 enabled
1
b7
b0
Timer A2 count start
Timer A3 count start
1
1
b7
b0
DMA0 request flag is set to “0.”
0
b7
b0
DMA0 control register (Address 1FCE16)
DMA request source : External source (DMAREQ0)
Edge sense selected
DMAACK0 pin : Valid
0
1
1000
b7
b0
DMA0 interrupt control register (Address 6C16)
Interrupt priority level : any of “0012” to “1112”
0
Count start register (Address 4016)
DMAC control register L (Address 6816)
DMAC control register H (Address 6916)
Port P4 register (Address A16)
Fig. 16.2.5 Initial setting example for relevant register (3)



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