R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 408

• Manufacturer Part Number: R4F24278NVFQU
• Description: MCU 512K/48K 2.7-5.5V 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

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

Section 8 DMA Controller (DMAC)
8.5.4
In common register enabled mode, repeat mode can be specified by setting the MDS bit in
DMACRS to 1, and clearing the DTIE bit in DMABCRL to 0. In common register disabled mode,
repeat mode can be specified by setting the MDS bit in DMACRS to 1, and clearing the IDLE bit
in DMAECRS to 0. In repeat mode, MAR is updated after each byte or word transfer in response
to a single transfer request, and this is executed the number of times specified in ETCRL. On
completion of the specified number of transfers, MAR and ETCRL are automatically restored to
their original settings and operation continues. One address is specified by MAR, and the other by
IOAR. The transfer direction can be specified by the DTDIR bit in DMACRS. Table 8.6
summarizes register functions in repeat mode.
Table 8.6
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Register
23
23
H'FF
Repeat Mode
15
7
7
ETCRH
ETCRL
Register Functions in Repeat Mode
MAR
IOAR
0
0
0
0
DTDIR = 0 DTDIR = 1 Initial Setting
Source
address
register
Destination
address
register
Holds number of
transfers
Transfer counter
Function
Destination
address
register
Source
address
register
Start address of
transfer destination
or transfer source
Start address of
transfer source or
transfer destination
Number of transfers
Number of transfers
H8S/2427, H8S/2427R, H8S/2425 Group
REJ09B0565-0100 Rev. 1.00
Operation
Incremented/
decremented every
transfer.
Initial setting is
restored when the
value reaches
H'0000
Fixed
Fixed
Decremented every
transfer.
Loaded with ETCRH
value when the
value reaches H'00
Jul 22, 2010