r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 393
![no-image](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__sml.jpg)
r4f2456
Manufacturer Part Number
r4f2456
Description
16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R4F2456.pdf
(1376 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
r4f24565NVFQV
Manufacturer:
Renesas Electronics America
Quantity:
135
Company:
Part Number:
r4f24565NVFQV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
r4f24568NVFQV
Manufacturer:
REA
Quantity:
15
Company:
Part Number:
r4f24568NVFQV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
r4f24568NVRFQV
Manufacturer:
Renesas Electronics America
Quantity:
135
Company:
Part Number:
r4f24568NVRFQV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
r4f24568NVZFQV
Manufacturer:
REA
Quantity:
5
Company:
Part Number:
r4f24568NVZFQV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
r4f24569DVRFQV
Manufacturer:
Renesas Electronics America
Quantity:
135
Company:
Part Number:
r4f24569DVRFQV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
r4f24569VFQV
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
- Current page: 393 of 1376
- Download datasheet (8Mb)
Section 7 DMA Controller (DMAC)
7.5.8
Basic Bus Cycles
An example of the basic DMAC bus cycle timing is shown in figure 7.17. In this example, word-
size transfer is performed from 16-bit, 2-state access space to 8-bit, 3-state access space. When
the bus is transferred from the CPU to the DMAC, a source address read and destination address
write are performed. The bus is not released in response to another bus request, etc., between
these read and write operations. As like CPU cycles, DMA cycles conform to the bus controller
settings.
The address is not output to the external address bus in an access to on-chip memory or an internal
I/O register.
CPU cycle
DMAC cycle (1-word transfer)
CPU cycle
T
T
T
T
T
T
T
T
1
2
1
2
3
1
2
3
φ
Source
Destination address
address
Address bus
RD
HWR
LWR
Figure 7.17 Example of DMA Transfer Bus Timing
Rev. 1.00 Sep. 19, 2008 Page 363 of 1342
REJ09B0467-0100
Related parts for r4f2456
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![HD6417709S](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas Technology Corp [Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series]
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![M30291FCTHP](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
RENESAS MCU M16C FAMILY / M16C/Tiny SERIES
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![R0K505210S000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Renesas Starter Kit for RX210
Manufacturer:
Renesas Electronics Corporation.
![R0K505630S000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
EVALBOARD/Renesas StarterKit for RX630
Manufacturer:
Renesas Electronics Corporation.
![R0K50563NS000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
EVALBOARD/Renesas Starter Kit+ for RX63N
Manufacturer:
Renesas Electronics Corporation.
![R0K507269S000BE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
EVALBOARD/Renesas Starter Kit
Manufacturer:
Renesas Electronics Corporation.
![Y-PG-FP5-EE](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
FLASH PROGRAMMER FOR RENESAS MICROCONTROLLERS
Manufacturer:
Renesas Electronics Corporation.
![HA1127](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![HA17747](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3799CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3719D](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3778CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3777CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3798CY](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
![UPD3728DZ](/images/manufacturer_photos/0/5/561/renesas_electronics_corporation__tmb.jpg)
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet: