DS72030W200FPV Renesas Electronics America, DS72030W200FPV Datasheet - Page 280
DS72030W200FPV
Manufacturer Part Number
DS72030W200FPV
Description
MPU, 32BIT, SH7203, ROMLESS, 240QFP
Manufacturer
Renesas Electronics America
Series
SH7200r
Datasheet
1.R5S72030W200FP.pdf
(1686 pages)
Specifications of DS72030W200FPV
Core Size
32bit
Program Memory Size
32KB
Cpu Speed
200MHz
Digital Ic Case Style
QFP
No. Of Pins
240
Supply Voltage Range
1.1V To 1.3V
Operating Temperature Range
-20°C To +85°C
Svhc
No SVHC
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 280 of 1686
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Section 9 Bus State Controller (BSC)
Rev. 3.00 Sep. 28, 2009 Page 248 of 1650
REJ09B0313-0300
Bit
8 to 6
5
4
Bit Name
DMAIW[2:0] 000
DMAIWA
⎯
Initial
Value
0
1
R/W
R/W
R/W
R
Description
Wait states between access cycles when DMA single
address transfer is performed.
Specify the number of idle cycles to be inserted after
an access to an external device with DACK when DMA
single address transfer is performed. The method of
inserting idle cycles depends on the contents of
DMAIWA.
000: No idle cycle inserted
001: 1 idle cycle inserted
010: 2 idle cycles inserted
011: 4 idle cycles inserted
100: 6 idle cycles inserted
101: 8 idle cycles inserted
110: 10 idle cycles inserted
111: 12 idle cycles inserted
Method of inserting wait states between access cycles
when DMA single address transfer is performed.
Specifies the method of inserting the idle cycles
specified by the DMAIW[2:0] bit. Clearing this bit will
make this LSI insert the idle cycles when another
device, which includes this LSI, drives the data bus
after an external device with DACK drove it. However,
when the external device with DACK drives the data
bus continuously, idle cycles are not inserted. Setting
this bit will make this LSI insert the idle cycles after an
access to an external device with DACK, even when
the continuous access cycles to an external device
with DACK are performed.
0: Idle cycles inserted when another device drives the
1: Idle cycles always inserted after an access to an
Reserved
This bit is always read as 1. The write value should
always be 1.
data bus after an external device with DACK drove
it.
external device with DACK
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