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UPD70F3201 Datasheet(PDF) 49 Page - NEC

Part # UPD70F3201
Description  32-BIT SINGLE-CHIP MICROCONTROLLERS
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD70F3201 Datasheet(HTML) 49 Page - NEC

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Preliminary Product Information U15436EJ1V0PM
49
µµµµPD703201, 703201Y, 703204, 703204Y, 70F3201, 70F3201Y, 70F3204, 70F3204Y
15. DMA FUNCTION
The DMA function has the following features.
Transfer unit: 8 bits/16 bits
Maximum transfer count: 65,536 (2
16) times
Transfer type: 2-cycle transfer
Transfer mode: Single transfer
Transfer request: Request via interrupt from on-chip peripheral I/O or external pins, request via software trigger
Transfer object: On-chip peripheral I/O, internal RAM, external memory
The relationship between the transfer type and transfer object is shown below (
√: Transfer enabled, ×: Transfer
disabled).
Transfer Destination
Transfer Source
On-Chip Peripheral I/O
Internal RAM
External Memory
On-chip peripheral I/O
√√
Internal RAM
√×
External memory
√√
The following figure shows the configuration of the DMA function.
V850ES core
CPU
BCU
IRIF
Data control
block
Address control
block
Count control
block
Channel control
block
Internal
RAM
On-chip peripheral
I/O
On-chip peripheral I/O bus
DSAnH/
DSAnL
DDAnH/
DDAnL
DBCn
DCHCn
DADCn
External
I/O
External bus
External
RAM
External
ROM
INTDMAn
DMARQn
DMACTVn
DMAC
Remark n = 0 to 3


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