DF61654N50FTV Renesas Electronics America, DF61654N50FTV Datasheet - Page 317
DF61654N50FTV
Manufacturer Part Number
DF61654N50FTV
Description
IC H8SX/1654 MCU FLASH 120TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8SX/1600r
Datasheet
1.DF61653N50FTV.pdf
(1020 pages)
Specifications of DF61654N50FTV
Core Processor
H8SX
Core Size
32-Bit
Speed
50MHz
Connectivity
I²C, IrDA, SCI, SmartCard, USB
Peripherals
DMA, PWM, WDT
Number Of I /o
75
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
120-TQFP, 120-VQFP
For Use With
HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)3DK1657 - DEV EVAL KIT FOR H8SX/1657
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF61654N50FTV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 317 of 1020
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Figure 7.13 shows an example of timing in cycle stealing mode. The transfer conditions are as
follows:
• Address mode: Single address mode
• Sampling method of the DREQ signal: Low level detection
(2)
In burst mode, once it takes the bus, the DMAC continues a transfer without releasing the bus until
the transfer end condition is satisfied. Even if a transfer is requested from another channel having
priority, the transfer is not stopped once it is started. The DMAC releases the bus in the next cycle
after the transfer for the channel in burst mode is completed. This is similarly to operation in cycle
stealing mode. However, setting the IBCCS bit in IBCR of the bus controller makes the DMAC
release the bus to pass the bus to another bus master.
In block transfer mode, the burst mode setting is ignored (operation is the same as that in burst
mode during one block of transfers). The DMAC is always operated in cycle stealing mode.
Clearing the DTE bit in DMDR stops a DMA transfer. A transfer requested before the DTE bit is
cleared to 0 by the DMAC is executed. When an interrupt by a transfer size error, a repeat size
end, or an extended repeat area overflow occurs, the DTE bit is cleared to 0 and the transfer ends.
Figure 7.14 shows an example of timing in burst mode.
Burst Access Mode
Bus cycle
DREQ
Bus cycle
Figure 7.13 Example of Timing in Cycle Stealing Mode
Figure 7.14 Example of Timing in Burst Mode
CPU
CPU
CPU
CPU
DMAC
DMAC
Bus released temporarily for the CPU
No CPU cycle generated
DMAC
CPU
Rev.1.00 Sep. 08, 2005 Page 267 of 966
DMAC
DMAC
Section 7 DMA Controller (DMAC)
CPU
CPU
CPU
REJ09B0219-0100
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