參數(shù)資料
型號： UPD703201
廠商： NEC Corp.
英文描述： 32-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述： 32位單晶片微控制器
文件頁數(shù)： 49/98頁
文件大?。?/td> 797K
代理商： UPD703201
Preliminary Product Information U15436EJ1V0PM
49
μ
PD703201, 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
{
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
16
) times
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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