HD64F2239TF20I Renesas Electronics America, HD64F2239TF20I Datasheet - Page 324

MCU 3V 384K I-TEMP 100-TQFP

HD64F2239TF20I

Manufacturer Part Number
HD64F2239TF20I
Description
MCU 3V 384K I-TEMP 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2200r
Datasheet

Specifications of HD64F2239TF20I

Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
I²C, SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
72
Program Memory Size
384KB (384K x 8)
Program Memory Type
FLASH
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HD64F2239TF20I
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Section 8 DMA Controller (DMAC)
Figure 8.24 shows an example of block transfer mode transfer activated by the DREQ pin falling
edge.
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 dead cycle ends, acceptance
resumes after the end of the dead cycle, DREQ pin low level sampling is performed again, and this
operation is repeated until the transfer ends.
Rev. 6.00 Mar. 18, 2010 Page 262 of 982
REJ09B0054-0600
φ
DREQ
Address
bus
DMA
control
Channel
[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
[4] [7] When the DREQ pin high level has been sampled, acceptance is resumed after the dead cycle
Note: In write data buffer mode, bus breaks from [2] to [7] may be hidden, and not visible.
Figure 8.24 Example of DREQ Pin Falling Edge Activated Block Transfer Mode Transfer
Acceptance after transfer enabling; the DREQ pin low level is sampled on the rising edge of
and the request is held.
is completed.
(As in [1], the DREQ pin low level is sampled on the rising edge of
Bus release
Idle
[1]
Request
of 2 cycles
Minimum
[2]
Request clear period
Read
[3]
Transfer source
DMA
read
Write
1 block transfer
Acceptance resumes
Transfer destination
DMA
write
Dead
[4]
Request
DMA
dead
of 2 cycles
Minimum
Idle
[5]
release
Bus
Read
[6]
Transfer source
Request clear period
DMA
read
φ
Write
, and the request is held.)
1 block transfer
φ
starts.
Transfer destination
DMA
write
Dead
Acceptance resumes
DMA
dead
φ
[7]
,
Idle
release
Bus

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