R4F24269NVFQV Renesas Electronics America, R4F24269NVFQV Datasheet - Page 372

• Manufacturer Part Number: R4F24269NVFQV
• Description: MCU 256KB FLASH 64K 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of R4F24269NVFQV

• 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: 64K 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 7 DMA Controller (DMAC)
7.3.6
The DMAC can activate the DTC with a transfer end interrupt, rewrite the channel on which the
transfer ended using a DTC chain transfer, and then reactivate the DTC. DMAWER applies
restrictions for changing all bits of DMACR, and specific bits for DMATCR and DMABCR for
the specific channel, to prevent inadvertent rewriting of registers other than those for the channel
concerned. The restrictions applied by DMAWER are valid for the DTC.
Page 342 of 1372
Bit
7 to 4
3
2
1
0
Bit Name
⎯
WE1B
WE1A
WE0B
WE0A
DMA Write Enable Register (DMAWER)
Initial Value
All 0
0
0
0
0
R/W
⎯
R/W
R/W
R/W
R/W
Description
Reserved
These bits are always read as 0 and cannot be
modified.
Write Enable 1B
Enables or disables writes to all bits in DMACR1B,
bits 11, 7, and 3 in DMABCR, and bit 5 in
DMATCR.
0: Writes are disabled
1: Writes are enabled
Write Enable 1A
Enables or disables writes to all bits in DMACR1A,
and bits 10, 6, and 2 in DMABCR.
0: Writes are disabled
1: Writes are enabled
Write Enable 0B
Enables or disables writes to all bits in DMACR0B,
bits 9, 5, and 1 in DMABCR, and bit 4 in
DMATCR.
0: Writes are disabled
1: Writes are enabled
Write Enable 0A
Enables or disables writes to all bits in DMACR0A,
and bits 8, 4, and 0 in DMABCR.
0: Writes are disabled
1: Writes are enabled
H8S/2426, H8S/2426R, H8S/2424 Group
REJ09B0466-0350 Rev. 3.50
Jul 09, 2010