R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 516

• 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)
(4)
In block transfer mode, transfer of one block is performed continuously in the same way as in
burst mode. The timing of the start of the next block transfer is the same as in normal transfer
mode.
If a transfer request is generated for another channel, an EXDMA cycle for the other channel is
generated before the next block transfer.
The EDREQ pin sensing timing is different for low level sensing and falling edge sensing. The
same applies to transfer request acceptance and transfer start timing.
Figures 9.39 to 9.44 show operation timing examples for various conditions.
Page 486 of 1448
φ pin
Relevant
channel
EDREQ
Relevant
channel
EDRAK
Bus cycle
Other
channel
EDREQ
Other
channel
EDRAK
Figure 9.38 External Request/Cycle Steal Mode/Normal Transfer Mode Contention
External Request/Cycle Steal Mode/Block Transfer Mode
transfer cycle
EXDMA
with Another Channel/Dual Address Mode/Low Level Sensing
3 cycles
Bus release
EXDMA
read
EXDMA
write
1 cycle
Bus
release
Other channel transfer cycle
H8S/2427, H8S/2427R, H8S/2425 Group
REJ09B0565-0100 Rev. 1.00
1 cycle
Bus
release
EXDMA
read
Jul 22, 2010
EXDMA
write