R5F61668RD50FPV Renesas Electronics America, R5F61668RD50FPV Datasheet - Page 1060
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R5F61668RD50FPV
Manufacturer Part Number
R5F61668RD50FPV
Description
MCU 3V 1024K I-TEMP 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8SX/1600r
Datasheet
1.R5F61668RN50FPV.pdf
(1506 pages)
Specifications of R5F61668RD50FPV
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
1MB (1M x 8)
Program Memory Type
FLASH
Eeprom Size
-
Ram Size
56K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
144-LQFP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R5F61668RD50FPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 20 USB Function Module (USB)
20.8
20.8.1
DMA transfer can be performed for endpoints 1 and 2 in this module. Note that word or longword
data cannot be transferred.
When endpoint 1 holds at least one byte of valid receive data, a DMA request for endpoint 1 is
generated. When endpoint 2 holds no valid data, a DMA request for endpoint 2 is generated.
If the DMA transfer is enabled by setting the EP1DMAE bit in the DMA transfer setting register
to 1, zero-length data reception at endpoint 1 is ignored. When the DMA transfer is enabled, the
RDFN bit for EP1 and PKTE bit for EP2 do not need to be set to 1 in TRG (note that the PKTE bit
must be set to 1 when the transfer data is less than the maximum number of bytes). When all the
data received at EP1 is read, the FIFO automatically enters the EMPTY state. When the maximum
number of bytes (64 bytes) are written to the EP2 FIFO, the FIFO automatically enters the FULL
state, and the data in the FIFO can be transmitted (see figures 20.22 and 20.23).
20.8.2
When the data received at EP1 is transferred by the DMA, the USB function module automatically
performs the same processing as writing 1 to the RDFN bit in TRG if the currently selected FIFO
becomes empty. Accordingly, in DMA transfer, do not write 1 to the RDFN bit for EPI in TRG. If
the user writes 1 to the RDFN bit in DMA transfer, correct operation cannot be guaranteed.
Figure 20.22 shows an example of receiving 150 bytes of data from the host. In this case, internal
processing which is the same as writing 1 to the RDFN bit in TRG is automatically performed
three times. This internal processing is performed when the currently selected data FIFO becomes
empty. Accordingly, this processing is automatically performed both when 64-byte data is sent
and when data less than 64 bytes is sent.
Rev. 2.00 Sep. 24, 2008 Page 1026 of 1468
REJ09B0412-0200
DMA Transfer
Overview
DMA Transfer for Endpoint 1
64 bytes
Figure 20.22 RDFN Bit Operation for EP1
RDFN
(Automatically
performed)
64 bytes
RDFN
(Automatically
performed)
22 bytes
RDFN
(Automatically
performed)
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