R5F61665N50FPV Renesas Electronics America, R5F61665N50FPV Datasheet - Page 455

• Manufacturer Part Number: R5F61665N50FPV
• Description: MCU FLASH 512K ROM 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of R5F61665N50FPV

• Core Processor: H8SX
• Core Size: 16/32-Bit
• Speed: 50MHz
• Connectivity: EBI/EMI, I²C, IrDA, SCI, SmartCard, USB
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 92
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; 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: -

(5)
Although the DTE bit in DMDR enables or disables data transfer by the CPU write access, it is
automatically cleared to 0 according to the DMA transfer state by the DMAC.
The conditions for clearing the DTE bit by the DMAC are as follows:
• When the total size of transfers is completed
• When a transfer is completed by a transfer size error interrupt
• When a transfer is completed by a repeat size end interrupt
• When a transfer is completed by an extended repeat area overflow interrupt
• When a transfer is stopped by an NMI interrupt
• When a transfer is stopped by and address error
• Reset state
• Hardware standby mode
• When a transfer is stopped by writing 0 to the DTE bit
Writing to the registers for the channels when the corresponding DTE bit is set to 1 is prohibited
(except for the DTE bit). When changing the register settings after writing 0 to the DTE bit,
confirm that the DTE bit has been cleared to 0.
Figure 10.21 show the procedure for changing the register settings for the channel being
transferred.
Figure 10.21 Procedure for Changing Register Setting For Channel being Transferred
DTE Bit in DMDR
of channel during operation
Changing register settings
Change register settings
Write 0 to DTE bit
End of changing
register settings
Read DTE bit
DTE = 0?
Yes
No
[1]
[2]
[3]
[4]
[1] Write 0 to the DTE bit in DMDR.
[2] Read the DTE bit.
[3] Confirm that DTE = 0. DTE = 1
[4] Write the desired values to the
indicates that DMA is transferring.
registers.
Rev. 2.00 Oct. 21, 2009 Page 421 of 1454
Section 10 DMA Controller (DMAC)
REJ09B0498-0200