R4F24268NVRFQV Renesas Electronics America, R4F24268NVRFQV Datasheet - Page 533
R4F24268NVRFQV
Manufacturer Part Number
R4F24268NVRFQV
Description
MCU 256KB FLASH 48K 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2400r
Datasheet
1.R4F24268NVZFQV.pdf
(1406 pages)
Specifications of R4F24268NVRFQV
Core Processor
H8S/2600
Core Size
16/32-Bit
Speed
33MHz
Connectivity
EBI/EMI, I²C, IrDA, SCI, SSU, UART/USART
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
96
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
48K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 10x10b, 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
-
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H8S/2426, H8S/2426R, H8S/2424 Group
9.7.3
By executing a second data transfer, and performing re-setting of the first data transfer, only when
the counter value is 0, it is possible to perform 256 or more repeat transfers.
An example is shown in which a 128-Kbyte input buffer is configured. The input buffer is
assumed to have been set to start at lower address H'0000. Figure 9.13 shows the chain transfer
when the counter value is 0.
1. For the first transfer, set the normal mode for input data. Set fixed transfer source address
2. Prepare the upper 8-bit addresses of the start addresses for each of the 65,536 transfer start
3. For the second transfer, set repeat mode (with the source side as the repeat area) for re-setting
4. Execute the first data transfer 65,536 times by means of interrupts. When the transfer counter
5. Next, execute the first data transfer the 65,536 times specified for the first data transfer by
6. Steps 4 and 5 are repeated endlessly. As repeat mode is specified for the second data transfer,
REJ09B0466-0350 Rev. 3.50
Jul 09, 2010
(G/A, etc.), CRA = H'0000 (65,536 times), and CHNE = 1, CHNS = 1, and DISEL = 0.
addresses for the first data transfer in a separate area (in ROM, etc.). For example, if the input
buffer comprises H'200000 to H'21FFFF, prepare H'21 and H'20.
the transfer destination address for the first data transfer. Use the upper 8 bits of DAR in the
first register information area as the transfer destination. Set CHNE = DISEL = 0. If the above
input buffer is specified as H'200000 to H'21FFFF, set the transfer counter to 2.
for the first data transfer reaches 0, the second data transfer is started. Set the upper 8 bits of
the transfer source address for the first data transfer to H'21. The lower 16 bits of the transfer
destination address of the first data transfer and the transfer counter are H'0000.
means of interrupts. When the transfer counter for the first data transfer reaches 0, the second
data transfer is started. Set the upper 8 bits of the transfer source address for the first data
transfer to H'20. The lower 16 bits of the transfer destination address of the first data transfer
and the transfer counter are H'0000.
an interrupt request is not sent to the CPU.
Chain Transfer when Counter = 0
Section 9 Data Transfer Controller (DTC)
Page 503 of 1372
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