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7721 Datasheet(PDF) 325 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) 325 Page - Renesas Technology Corp

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7721 Group User’s Manual
13-46
DMA CONTROLLER
13.4 Operation
Table 13.4.9 Address directions in 1-bus cycle transfer and examples of transfer results (2)
—
Fixed
Forward
Data
V
Data
Transfer unit : 8 bits
Address direction
Transfer unit : 16 bits
Transfer
sequence
External data bus width : 16 bits
Transfer
source
I/O
Data arrangement on
transfer destination
memory (transfer result)
Transfer source
I/O
External data bus width : 16 bits or 8 bits
Transfer
destination
memory
Transfer
sequence
Data arrangement on
transfer destination
memory (transfer result)
Transfer source
I/O
Data
V
Data
V
—
Data
Data
Low order
High order
V
Data
Low order
High order
Data
Low order
High order
Data
Data
Data
Data
Data
Data
Data
V
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
V
Low order
High order
Low order
High order
Low order
High order
V
Low order
High order
Low order
High order
Low order
High order
V : Transfer start
dd
Backward
—
Low order
High order



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