R4F24268NVFQV Renesas Electronics America, R4F24268NVFQV Datasheet - Page 460

• Manufacturer Part Number: R4F24268NVFQV
• Description: MCU 256K FLASH 48K 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of R4F24268NVFQV

• 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: -

Section 8 EXDMA Controller (EXDMAC)
8.4.5
There are two transfer modes: normal transfer mode and block transfer mode. When the activation
source is an external request, either normal transfer mode or block transfer mode can be selected.
When the activation source is an auto request, normal transfer mode is used.
(1)
In normal transfer mode, transfer of one transfer unit is processed in response to one transfer
request. EDTCR functions as a 24-bit transfer counter.
The ETEND signal is output only for the last DMA transfer. The EDRAK signal is output each
time a transfer request is accepted and transfer processing is started.
Figure 8.7 shows examples of DMA transfer timing in normal transfer mode.
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Transfer conditions:
Transfer conditions:
Bus cycle
ETEND
EDREQ
EDRAK
Bus cycle
EDACK
Dual address mode, auto request mode
Single address mode, external request mode
Normal Transfer Mode
Transfer Modes
Figure 8.7 Examples of Timing in Normal Transfer Mode
Read
transfer cycle
EXDMA
Write
EXDMA
Read
Last EXDMA
transfer cycle
EXDMA
Write
H8S/2426, H8S/2426R, H8S/2424 Group
REJ09B0466-0350 Rev. 3.50
Jul 09, 2010