R5F61663RN50FPV Renesas Electronics America, R5F61663RN50FPV Datasheet - Page 472
R5F61663RN50FPV
Manufacturer Part Number
R5F61663RN50FPV
Description
MCU FLASH 384K ROM 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8SX/1600r
Specifications of R5F61663RN50FPV
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
384KB (384K 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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R5F61663RN50FPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 10 DMA Controller (DMAC)
(6)
When the NRD bit in DMDR is set to 1, the timing of receiving the next transfer request is
delayed for one cycle.
Figure 10.33 shows an example of normal transfer mode activated by the DREQ signal low level
with NRD = 1.
The DREQ signal is sampled every cycle from the next rising edge of the Bφ signal immediately
after the DTE bit write cycle.
When a low level of the DREQ signal is detected while a transfer request by the DREQ signal is
enabled, a transfer request is held in the DMAC. When the DMAC is activated, the transfer
request is cleared. Receiving the next transfer request resumes after completion of the write cycle
and then a low level of the DREQ signal is detected. This operation is repeated until the transfer is
completed.
Bφ
DREQ
Address bus
Channel
Rev. 2.00 Sep. 24, 2008 Page 438 of 1468
REJ09B0412-0200
[1]
[2][5] The DMAC is activated and the transfer request is cleared.
[3][6] A DMA cycle is started.
[4][7] Transfer request enable is resumed one cycle after completion of the write cycle.
Activation Timing by DREQ Low Level with NRD = 1
After DMA transfer request is enabled, a low level of the DREQ signal is detected at the rising edge of the Bφ signal and a transfer
request is held.
(A low level of the DREQ signal is detected at the rising edge of the Bφ signal and a transfer request is held. This is the same as [1].)
Figure 10.33 Example of Transfer in Normal Transfer Mode Activated
[1]
Request
Bus released
Min. of 3 cycles
[2]
Duration of transfer
[3]
request disabled
DMA read
by DREQ Low Level with NRD = 1
cycle
Transfer
source
DMA write
destination
Transfer
Duration of transfer request
cycle
disabled which is extended
Transfer request enable resumed
by NRD
Bus released
[4]
Request
Min. of 3 cycles
[5]
[6]
Duration of transfer
request disabled
DMA read
Transfer
cycle
source
Transfer request enable resumed
DMA write
destination
cycle
Transfer
Duration of transfer request
disabled which is extended
by NRD
Bus released
[7]
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