HD64F2218UTF24 Renesas Electronics America, HD64F2218UTF24 Datasheet - Page 257
HD64F2218UTF24
Manufacturer Part Number
HD64F2218UTF24
Description
IC H8S MCU FLASH 128K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2200r
Specifications of HD64F2218UTF24
Core Processor
H8S/2000
Core Size
16-Bit
Speed
24MHz
Connectivity
SCI, SmartCard, USB
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
69
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
12K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
For Use With
3DK2218-SS - KIT DEV H8S/2218 WINDOWS SIDESHW
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HD64F2218UTF24V
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
- Current page: 257 of 758
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DREQ Signal Level Activation Timing (Normal Mode): Set the DTA bit for the channel for
which the DREQ signal is selected to 1.
Figure 7.19 shows an example of DREQ level activated normal mode transfer.
DREQ signal 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 signal low level is sampled while acceptance by means of the DREQ signal is
possible, the request is held in the DMAC. Then, when activation is initiated in the DMAC, the
request is cleared. Acceptance resumes after the end of the write cycle, DREQ signal low level
sampling is performed again, and this operation is repeated until the transfer ends.
Note: The DREQ signal of this chip is an internal signal of chip, so it is not output from the pin.
Address bus
DMA control
Channel
[1]
[2] [5]
[3] [6]
[4] [7]
DREQ
Figure 7.19 Example of DREQ Level Activated Normal Mode Transfer
φ
Acceptance after transfer enabling; the DREQ signal low level is sampled on the rising
edge of f, and the request is held.
The request is cleared at the next bus break, and activation is started in the DMAC.
Start of DMA cycle.
Acceptance is resumed after the write cycle is completed.
(As in [1], the DREQ signal low level is sampled on the rising edge of φ, and the request
is held.)
Idle
Bus release
Minimum of 2 cycles
[1]
Request
[2]
Read
[3]
Request clear period
Transfer
source
DMA
read
Write
Acceptance resumes
DMA
write
Transfer
destination
Idle
Minimum of 2 cycles
[4]
Request
Bus
release
Rev.7.00 Dec. 24, 2008 Page 201 of 698
[5]
Read
[6]
Request clear period
Transfer
source
DMA
read
Write
Acceptance resumes
Transfer
destination
DMA
write
Idle
REJ09B0074-0700
[7]
Bus
release
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