R4F24268NVRFQV Renesas Electronics America, R4F24268NVRFQV Datasheet - Page 501
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
The transfer end interrupt can be cleared either by clearing the IRF bit to 0 in EDMDR within the
interrupt handling routine, or by re-setting the transfer counter and address registers and then
setting the EDA bit to 1 in EDMDR to perform transfer continuation processing. An example of
the procedure for clearing the transfer end interrupt and restarting transfer is shown in figure 8.46.
REJ09B0466-0350 Rev. 3.50
Jul 09, 2010
Figure 8.46 Example of Procedure for Restarting Transfer on Channel in which Transfer
[1] Write set values to the registers (transfer counter, address registers, etc.).
[2] Write 1 to the EDA bit in EDMDR to restart EXDMA operation. When 1 is written to the EDA
[3] The interrupt handling routine is ended with an RTE instruction, etc.
[4] Clear the IRF bit to 0 in EDMDR by first reading 1 from it, then writing 0.
[5] After the interrupt handling routine is ended with an RTE instruction, etc., interrupt masking is
[6] Write set values to the registers (transfer counter, address registers, etc.).
[7] Write 1 to the EDA bit in EDMDR to restart EXDMA operation.
bit, the IRF bit in EDMDR is automatically cleared to 0 and the interrupt source is cleared.
cleared.
(RTE instruction execution)
exception handling routine
Change register settings
End of interrupt handling
Transfer end interrupt
End of transfer restart
Transfer continuation
Write 1 to EDA bit
processing
processing
routine
End Interrupt Occurred
[1]
[2]
[3]
of interrupt handling routine
Transfer restart after end
End of interrupt handling
Change register settings
End of transfer restart
Write 1 to EDA bit
Clear IRF bit to 0
processing
routine
Section 8 EXDMA Controller (EXDMAC)
[4]
[5]
[6]
[7]
Page 471 of 1372
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