HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 692
HD6417751RF240V
Manufacturer Part Number
HD6417751RF240V
Description
MPU 1.5/3.3V 0K PB-FREE 256-QFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7750r
Datasheet
1.D6417751RBP200DV.pdf
(1226 pages)
Specifications of HD6417751RF240V
Core Processor
SH-4
Core Size
32-Bit
Speed
240MHz
Connectivity
EBI/EMI, FIFO, SCI, SmartCard
Peripherals
DMA, POR, WDT
Number Of I /o
39
Program Memory Type
ROMless
Ram Size
48K x 8
Voltage - Supply (vcc/vdd)
1.4 V ~ 1.6 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
256-QFP Exposed Pad, 256-eQFP, 256-HQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
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Part Number:
HD6417751RF240V
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14. Direct Memory Access Controller (DMAC)
Bit 3⎯Request Queue Clear (QCL): Writing a 1 to this bit clears the request queues of the
corresponding channel as well as any external requests that have already been accepted. This bit is
only functional when DMAOR.DDT = 1 and DMAOR.DBL = 1.
CHCR Bit 3
QCL
0
1
Bit 2—Interrupt Enable (IE): When this bit is set to 1, an interrupt request (DMTE) is generated
after the number of data transfers specified in DMATCR (when TE = 1). For details of the
settings, see the description of the IE bit in section 14.2.4, DMA Channel Control Registers 0−3
(CHCR0−CHCR3).
Bit 1—Transfer End (TE): This bit is set to 1 after the number of transfers specified in
DMATCR. If the IE bit is set to 1 at this time, an interrupt request (DMTE) is generated.
If data transfer ends before TE is set to 1 (for example, due to an NMI interrupt, address error, or
clearing of the DE bit or the DME bit in DMAOR), the TE bit is not set to 1. When this bit is 1,
the transfer enabled state is not entered even if the DE bit is set to 1. For details of the settings, see
the description of the TE bit in section 14.2.4, DMA Channel Control Registers 0−3
(CHCR0−CHCR3).
Bit 0—DMAC Enable (DE): Enables operation of the corresponding channel. For details of the
settings, see the description of the DE bit in section 14.2.4, DMA Channel Control Registers 0−3
(CHCR0−CHCR3).
Rev.4.00 Oct. 10, 2008 Page 592 of 1122
REJ09B0370-0400
Description
This bit is always read as 0.
Writing a 0 to this bit is invalid.
When DMAOR.DBL = 1, writing a 1 to this bit clears the request queues on the
DDT side and any external requests stored in the DMAC. The written value is
not retained.
(Initial value)
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