DF2170VTE33 Renesas Electronics America, DF2170VTE33 Datasheet - Page 213
DF2170VTE33
Manufacturer Part Number
DF2170VTE33
Description
MCU 3V 256K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Datasheet
1.DF2170BVTE33V.pdf
(572 pages)
Specifications of DF2170VTE33
Core Processor
H8S/2000
Core Size
16-Bit
Speed
33MHz
Connectivity
SCI, USB
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
76
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Other names
HD64F2170VTE33
HD64F2170VTE33
HD64F2170VTE33
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2170VTE33V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Block Transfer Mode: In block transfer mode, the number of bytes, words, or longwords
specified by the block size is transferred in response to one transfer request. The upper 8 bits of
DMTCR specify the block size, and the lower 16 bits function as a 16-bit transfer counter. A block
size of 1 to 256 can be specified.
During transfer of a block, transfer requests for other higher-priority channels are held pending.
When transfer of one block is completed, the bus is released in the next cycle.
Address register values are updated in the same way as in normal mode. There is no function for
restoring the initial address register values after each block transfer.
The TEND signal is output for each block transfer in the DMA transfer cycle in which the block
ends. The DRAK signal is output once for one transfer request (for transfer of one block).
Caution is required when setting the repeat area overflow interrupt of the repeat area function in
block transfer mode. See section 7.4.6, Repeat Area Function, for details. Block transfer is aborted
if an NMI interrupt is generated. See section 7.4.12, Ending DMA Transfer, for details.
Figure 7.8 shows an example of DMA transfer timing in block transfer mode.
7.4.6
The DMAC has a function for designating a repeat area for source addresses and/or destination
addresses. When a repeat area is designated, the address register values repeat within the range
specified as the repeat area. Normally, when a ring buffer is involved in a transfer, an operation is
required to restore the address register value to the buffer start address each time the address
register value is the last address in the buffer (i.e. when ring buffer address overflow occurs), but if
Transfer conditions:
Bus cycle
· Single address mode
· Block size (DMTCR[23:16]) = 3
Repeat Area Function
CPU
Figure 7.8 Example of Timing in Block Transfer Mode
CPU
CPU
DMAC
One-block transfer cycle
CPU cycle not generated
DMAC
Rev. 2.00, 03/04, page 179 of 534
DMAC
CPU
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