R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 498

• 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 9 EXDMA Controller (EXDMAC)
(3)
Figure 9.17 shows an example of transfer when ETEND output is enabled, and word-size, block
transfer mode (cycle steal mode) is performed from external 16-bit, 2-state access space to
external 16-bit, 2-state access space.
One block is transferred in response to one transfer request, and after the transfer, the bus is
released. While the bus is released, one or more CPU, DMAC, or DTC bus cycles are initiated.
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φ
Address bus
RD
HWR
LWR
ETEND
Block Transfer Mode (Cycle Steal Mode)
Figure 9.17 Example of Block Transfer Mode (Cycle Steal Mode) Transfer
Bus
release
EXDMA
read
EXDMA
write
Block transfer
EXDMA
read
EXDMA
write
release
Bus
EXDMA
read
EXDMA
Last block transfer
write
H8S/2427, H8S/2427R, H8S/2425 Group
EXDMA
read
REJ09B0565-0100 Rev. 1.00
EXDMA
write
Jul 22, 2010
Bus
release