R0K561622S000BE Renesas Electronics America, R0K561622S000BE Datasheet - Page 272
R0K561622S000BE
Manufacturer Part Number
R0K561622S000BE
Description
KIT STARTER FOR H8SX/1622
Manufacturer
Renesas Electronics America
Series
Renesas Starter Kits (RSK)r
Type
MCUr
Specifications of R0K561622S000BE
Contents
Board, Cables, CD, Debugger, Power Supply
Silicon Manufacturer
Renesas
Features
Coding And Debugging, E10A Emulator, RS232 Serial Connection
Kit Contents
Board
Silicon Family Name
H8SX/1622F
Silicon Core Number
R5F61622N50LGV
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
H8SX/1622
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
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Section 8 Bus Controller (BSC)
(3)
If an external read occurs after an external write while bit IDLS2 in IDLCR is set to 1, idle cycles
specified by bits IDLCA1 and IDLCA0 are inserted at the start of the read cycle (n = 0 to 7).
Figure 8.39 shows an example of the operation in this case. In this example, bus cycle A is a CPU
write cycle and bus cycle B is a read cycle from the SRAM. In (a), an idle cycle is not inserted,
and a conflict occurs in bus cycle B between the CPU write data and read data from an SRAM
device. In (b), an idle cycle is inserted, and a data conflict is prevented.
Rev. 2.00 Sep. 16, 2009 Page 242 of 1036
REJ09B0414-0200
Bφ
Address bus
CS (area A)
CS (area B)
RD
LLWR
Data bus
Read after Write
Figure 8.39 Example of Idle Cycle Operation (Read after Write)
(a) No idle cycle inserted
Bus cycle A
T
1
(IDLS2 = 0)
T
2
Output floating
time is long.
T
3
Bus cycle B
T
1
T
2
Data conflict
T
(IDLS2 = 1, IDLCA1 = 0, IDLCA0 = 0)
Bus cycle A
1
T
2
(b) Idle cycle inserted
T
3
T
Bus cycle B
i
T
1
T
2
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