R5F61665N50FPV Renesas Electronics America, R5F61665N50FPV Datasheet - Page 1017

• 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: -

Bit
1
Bit Name
EP2DMAE
Initial
Value
0
R/W
R/W
Description
Endpoint 2 DMA Transfer Enable
When this bit is set, DMA transfer is enabled from
memory to the endpoint 2 transmit FIFO buffer. If
there is at least one byte of open space in the FIFO
buffer, a DMAC start interrupt signal (USBINTN1) is
asserted. In DMA transfer, when 64 bytes are written
to the FIFO buffer the EP2 packet enable bit is set
automatically, allowing 64 bytes of data to be
transferred, and if there is still space in the other side
of the two FIFOs, the DMAC start interrupt signal
(USBINTN1) is asserted again. However, if the size of
the data packet to be transmitted is less than 64
bytes, the EP2 packet enable bit is not set
automatically, and so should be set by the CPU with a
DMA transfer end interrupt.
As EP2-related interrupt requests to the CPU are not
automatically masked, interrupt requests should be
masked as necessary in the interrupt enable register.
•
1. Write of 1 to the EP2 DMAE bit in DMAR
2. Set the DMAC to activate through USBINTN1
3. Transfer count setting in the DMAC
4. DMAC activation
5. DMA transfer
6. DMA transfer end interrupt generated
See section 20.8.3, DMA Transfer for Endpoint 2.
Operating procedure
Rev. 2.00 Oct. 21, 2009 Page 983 of 1454
Section 20 USB Function Module (USB)
REJ09B0498-0200