■ DMA Controller (DMAC) Max. of 4 channels can be used Dual-address or s" />
參數(shù)資料
型號(hào)： R0K438099S000BE
廠商： Renesas Electronics America
文件頁數(shù)： 3/46頁
文件大?。?/td> 0K
描述： KIT STARTER FOR H8/38099
產(chǎn)品培訓(xùn)模塊： Electromagnetic Noise Reduction Techniques Part 1
標(biāo)準(zhǔn)包裝： 1
系列： H8®
類型： MCU
適用于相關(guān)產(chǎn)品： H8/38099
所含物品： CPU 板、LCD 顯示模塊、E8 仿真器、纜線、快速入門指南和光盤
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Peripherals
H8 Peripherals
9
■ DMA Controller (DMAC)
Max. of 4 channels can be used
Dual-address or single-address
mode can be selected
Supports Single, Burst, Sequential,
Idle and Repeat Transfer modes
Data can be transferred in word
or byte units
Activation: internal interrupt,
external request, auto-request
■ Data Transfer Controller (DTC)
Max. of 85 channels can be used
Multiple transfers or multiple
types of transfers possible for
one activation source
Supports Single, Burst, Chain and
Repeat Transfer modes
Data can be transferred in byte or
word units
Activation sources: interrupt and
software
■ External DMA Controller
(ExDMAC)
Max. of 4 channels can be used
Selection of byte or word transfer
data length
Transfer data in parallel with CPU
or other internal bus master
Dual-address or single-address
mode can be selected
Supports Single, Burst, Sequential,
Idle and Repeat Transfer modes
Data can be transferred in word
or byte units
Activation: internal interrupt,
external request, auto-request
DTC
service
request
Interrupt
controller
On-chip 1KB RAM
Channel n
Interrupt
request
n + 1
n + 2
Source
Memory data
Destination
DMA Register
Source
Serial I/O
Destination
Memory
Data Transfer Controller: Chain Transfer Mode
Address bus
A15 to A0
Exter
nal
memory
Exter
nal
device
(Read)
(Write)
Address bus
Data
bu
s
RD
HWR, LWR
A23 to A0
H8S/2633
DACK
Single-Address Mode
(Parallel read and write)
Exter
nal
memory
Exter
nal
device
Read (1st cycle)
RD
HWR, LWR
H8S/2633
Dual-Address Mode
(Two-cycle read and write)
Address bus
A23 to A0
BUFFER
D15 to D0
Write (2nd cycle)
Data
bu
s
D15 to D0
DMA Controller Block Diagram
ExDMA Controller Block Diagram
Data flow
External
address bus
External
data bus
EXDMAC
EDACK
EDREQ
External
memory
External device
with DACK
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相關(guān)代理商/技術(shù)參數(shù)
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