R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 526
R4F24278NVFQU
Manufacturer Part Number
R4F24278NVFQU
Description
MCU 512K/48K 2.7-5.5V 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2400r
Datasheet
1.R4F24278NVFQU.pdf
(1482 pages)
Specifications of R4F24278NVFQU
Core Processor
H8S/2600
Core Size
16/32-Bit
Speed
33MHz
Connectivity
EBI/EMI, I²C, IrDA, SCI, Smart Card, SPI, SSU, UART/USART
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
98
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Eeprom Size
-
Ram Size
64K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 16x10b; 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
Available stocks
Company
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Manufacturer
Quantity
Price
Company:
Part Number:
R4F24278NVFQU
Manufacturer:
REALTEK
Quantity:
2 300
Company:
Part Number:
R4F24278NVFQU
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 9 EXDMA Controller (EXDMAC)
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 9.46.
Page 496 of 1448
Figure 9.46 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
End of interrupt handling
Change register settings
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
H8S/2427, H8S/2427R, H8S/2425 Group
REJ09B0565-0100 Rev. 1.00
[4]
[5]
[6]
[7]
Jul 22, 2010
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