R5S72030W200FP Renesas Electronics America, R5S72030W200FP Datasheet - Page 471
R5S72030W200FP
Manufacturer Part Number
R5S72030W200FP
Description
IC SUPERH MPU ROMLESS 240QFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7200r
Specifications of R5S72030W200FP
Core Processor
SH2A-FPU
Core Size
32-Bit
Speed
200MHz
Connectivity
CAN, I²C, SCI, SSI, SSU, USB
Peripherals
DMA, LCD, POR, PWM, WDT
Number Of I /o
82
Program Memory Type
ROMless
Ram Size
80K x 8
Voltage - Supply (vcc/vdd)
1.1 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
240-QFP
For Use With
R0K572030S000BE - KIT DEV FOR SH7203HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
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In priority fixed mode (CH0 > CH1), when channel 1 is transferring data in burst mode and a
request arrives for transfer on channel 0, which has higher-priority, the data transfer on channel 0
will begin immediately. In this case, if the transfer on channel 0 is also in burst mode, the transfer
on channel 1 will only resume on completion of the transfer on channel 0.
When channel 0 is in cycle steal mode, one transfer-unit of data on this channel, which has the
higher priority, is transferred. Data is then transferred continuously to channel 1 without releasing
the bus. The bus mastership will then switch between the two in this order: channel 0, channel 1,
channel 0, channel 1, etc. That is, the CPU cycle after the data transfer in cycle steal mode is
replaced with a burst-mode transfer cycle (priority execution of burst-mode cycle). An example of
this is shown in figure 10.12.
When multiple channels are in burst mode, data transfer on the channel that has the highest
priority is given precedence. When DMA transfer is being performed on multiple channels, the
bus mastership is not released to another bus-master device until all of the competing burst-mode
transfers have been completed.
In round-robin mode, the priority changes as shown in figure 10.3. Note that channels in cycle
steal and burst modes must not be mixed.
Bus Mode and Channel Priority
Priority: CH0 > CH1
CH0: Cycle steal mode
CH1: Burst mode
Figure 10.12 Bus State when Multiple Channels are Operating
CPU
CPU
DMA
CH1
DMAC CH1
Burst mode
DMA
CH1
DMA
CH0
CH0
DMAC CH0 and CH1
Cycle steal mode
DMA
CH1
CH1
Section 10 Direct Memory Access Controller (DMAC)
DMA
CH0
CH0
Rev. 3.00 Sep. 28, 2009 Page 439 of 1650
DMA
CH1
DMAC CH1
Burst mode
DMA
CH1
CPU
CPU
REJ09B0313-0300
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