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7643 Datasheet(PDF) 211 Page - Renesas Technology Corp

Part # 7643
Description  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  424 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7643 Datasheet(HTML) 211 Page - Renesas Technology Corp

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Rev.2.00
Aug 28, 2006
page 90 of 202
7643 Group
REJ09B0133-0200
APPLICATION
2.5 DMAC
Fig. 2.5.15 Timing chart for burst transfer caused by hardware-related transfer request
A5
ADL185
PC + 2
ADL1, 00
PC + 1
PC
PC + 3
LDA $zz
STA $zz
(First cycle)
STA $zz
(Second cycle)
φ
OUT
SYNCOUT
RD
WR
DMAOUT
(Port P33)
Address
Data
Transfer request
source (“L” active)
Transfer request source
sampling
Reset of transfer request
source sampling
DMA transfer
Data
DMA destina-
tion add. 1
DMA source
add. 1
DMA destina-
tion add. 2
DMA source
add. 2
DMA
data 1
DMA
data 1
DMA
data 2
DMA
data 2
ADL2



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