R0K561622S000BE Renesas Electronics America, R0K561622S000BE Datasheet - Page 283
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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8.13.2
This LSI has a write data buffer function for the peripheral module access. Using the write data
buffer function enables peripheral module writes and on-chip memory or external access to be
executed in parallel. The write data buffer function is made available by setting the PWDBE bit in
BCR2 to 1. For details on the on-chip peripheral module registers, see table 8.26, Number of
Access Cycles for Registers of On-Chip Peripheral Modules in section 8.12, Internal Bus.
Figure 8.45 shows an example of the timing when the write data buffer function is used. When this
function is used, if an internal I/O register write continues for two cycles or longer and then there
is an on-chip RAM, an on-chip ROM, or an external access, internal I/O register write only is
performed in the first two cycles. However, from the next cycle onward an internal memory or an
external access and internal I/O register write are executed in parallel rather than waiting until it
ends.
Write Data Buffer Function for Peripheral Modules
Figure 8.45 Example of Timing when Peripheral Module
Iφ
Internal
address bus
Pφ
Internal I/O
address bus
Internal I/O
data bus
Write Data Buffer Function is Used
Peripheral module write
Peripheral module address
On-chip
memory
read
Rev. 2.00 Sep. 16, 2009 Page 253 of 1036
Section 8 Bus Controller (BSC)
REJ09B0414-0200
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