參數(shù)資料
型號(hào): UPD703204
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(yè)數(shù): 49/98頁(yè)
文件大?。?/td> 797K
代理商: UPD703204
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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