R0K561622S000BE Renesas Electronics America, R0K561622S000BE Datasheet - Page 266
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)
When consecutively reading from the same area connected to a peripheral LSI whose data hold
time is long, data outputs from the peripheral LSI and this LSI may conflict. Inserting the chip
select assertion period extension cycle after the access cycle can avoid the data conflict.
Figure 8.35 shows an example of the operation. In the figure, both bus cycles A and B are read
access cycles to the address/data multiplexed I/O space. An example of the data conflict is shown
in (a), and an example of avoiding the data conflict by the CS assertion period extension cycle in
(b).
Rev. 2.00 Sep. 16, 2009 Page 236 of 1036
REJ09B0414-0200
Bφ
Address bus
CS
AH
RD
Data bus
Bφ
Address bus
CS
AH
RD
Data bus
Figure 8.35 Consecutive Read Accesses to Same Area
(a) Without CS assertion period extension cycle (CSXTn = 0)
(b) With CS assertion period extension cycle (CSXTn = 1)
(Address/Data Multiplexed I/O Space)
Bus cycle A
Bus cycle A
Data hold time is long.
Bus cycle B
Data conflict
Bus cycle B
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