DF2339VFC25V Renesas Electronics America, DF2339VFC25V Datasheet - Page 303
![IC H8S/2300 MCU FLASH 144QFP](/photos/12/22/122258/df2339vfc25v_sml.jpg)
DF2339VFC25V
Manufacturer Part Number
DF2339VFC25V
Description
IC H8S/2300 MCU FLASH 144QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Datasheets
1.HEWH8E10A.pdf
(19 pages)
2.D12312SVTE25V.pdf
(341 pages)
3.DF2338VFC25V.pdf
(1246 pages)
Specifications of DF2339VFC25V
Core Processor
H8S/2000
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
106
Program Memory Size
384KB (384K x 8)
Program Memory Type
FLASH
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 12x10b; D/A 4x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
144-QFP
For Use With
EDK2329 - DEV EVALUATION KIT H8S/2329
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2339VFC25V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 303 of 1246
- Download datasheet (7Mb)
DREQ Pin Falling Edge Activation Timing: Set the DTA bit for the channel for which the
DREQ pin is selected to 1.
Figure 7.23 shows an example of DREQ pin falling edge activated normal mode transfer.
DREQ pin sampling is performed every cycle, with the rising edge of the next φ cycle after the
end of the DMABCR write cycle for setting the transfer enabled state as the starting point.
When the DREQ pin low level is sampled while acceptance by means of the DREQ pin is
possible, the request is held in the DMAC. Then, when activation is initiated in the DMAC, the
request is cleared, and DREQ pin high level sampling for edge detection is started. If DREQ pin
high level sampling has been completed by the time the DMA write cycle ends, acceptance
resumes after the end of the write cycle, DREQ pin low level sampling is performed again, and
this operation is repeated until the transfer ends.
[1]
[2] [5] The request is cleared at the next bus break, and activation is started in the DMAC.
[3] [6] Start of DMA cycle; DREQ pin high level sampling on the rising edge of φ starts.
[4] [7] When the DREQ pin high level has been sampled, acceptance is resumed after the write cycle
Note: In write data buffer mode, bus breaks from [2] to [7] may be hidden, and not visible.
φ
DREQ
Address
bus
DMA
control
Channel
Figure 7.23 Example of DREQ Pin Falling Edge Activated Normal Mode Transfer
Acceptance after transfer enabling; the DREQ pin low level is sampled on the rising edge of φ,
and the request is held.
is completed.
(As in [1], the DREQ pin low level is sampled on the rising edge of φ, and the request is held.)
Idle
[1]
Request
Bus release
of 2 cycles
Minimum
[2]
Read
[3]
Transfer source
Request clear period
DMA
read
Write
Transfer destination
Acceptance resumes
DMA
write
Idle
[4]
Request
of 2 cycles
Minimum
release
Rev.4.00 Sep. 07, 2007 Page 271 of 1210
Bus
[5]
Read
[6]
Transfer source
Request clear period
DMA
read
Write
Transfer destination
Acceptance resumes
REJ09B0245-0400
DMA
write
Idle
[7]
release
Bus
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