R5F61663RN50FPV Renesas Electronics America, R5F61663RN50FPV Datasheet - Page 448
R5F61663RN50FPV
Manufacturer Part Number
R5F61663RN50FPV
Description
MCU FLASH 384K ROM 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8SX/1600r
Specifications of R5F61663RN50FPV
Core Processor
H8SX
Core Size
16/32-Bit
Speed
50MHz
Connectivity
EBI/EMI, I²C, IrDA, SCI, SmartCard, USB
Peripherals
DMA, LVD, POR, PWM, WDT
Number Of I /o
92
Program Memory Size
384KB (384K x 8)
Program Memory Type
FLASH
Ram Size
40K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R5F61663RN50FPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 10 DMA Controller (DMAC)
Figure 10.13 shows an example of timing in cycle stealing mode. The transfer conditions are as
follows:
• Address mode: Single address mode
• Sampling method of the DREQ signal: Low level detection
(2)
In burst mode, once it takes the bus, the DMAC continues a transfer without releasing the bus until
the transfer end condition is satisfied. Even if a transfer is requested from another channel having
priority, the transfer is not stopped once it is started. The DMAC releases the bus in the next cycle
after the transfer for the channel in burst mode is completed. This is similarly to operation in cycle
stealing mode. However, setting the IBCCS bit in BCR2 of the bus controller makes the DMAC
release the bus to pass the bus to another bus master.
In block transfer mode, the burst mode setting is ignored (operation is the same as that in burst
mode during one block of transfers). The DMAC is always operated in cycle stealing mode.
Clearing the DTE bit in DMDR stops a DMA transfer. A transfer requested before the DTE bit is
cleared to 0 by the DMAC is executed. When an interrupt by a transfer size error, a repeat size
end, or an extended repeat area overflow occurs, the DTE bit is cleared to 0 and the transfer ends.
Figure 10.14 shows an example of timing in burst mode.
Rev. 2.00 Sep. 24, 2008 Page 414 of 1468
REJ09B0412-0200
Burst Access Mode
Bus cycle
DREQ
Bus cycle
Figure 10.13 Example of Timing in Cycle Stealing Mode
Figure 10.14 Example of Timing in Burst Mode
CPU
CPU
CPU
CPU
DMAC
DMAC
Bus released temporarily for the CPU
No CPU cycle generated
DMAC
CPU
DMAC
DMAC
CPU
CPU
CPU
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