HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 568
HD6412340
Manufacturer Part Number
HD6412340
Description
H8S/2345 F-ZTAT Hardware Manual
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet
1.HD6412340.pdf
(907 pages)
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Flash Memory Emulation in RAM: Emulation should be performed in user mode or user
program mode. When the emulation block set in RAMER is accessed while the emulation function
is being executed, data written in the overlap RAM is read.
556
Reading Overlap Data in User Mode and User Program Mode
Writing Overlap Data in User Program Mode
When overlap RAM data is confirmed, the RAMS bit is cleared, RAM overlap is released, and
writes should actually be performed to the flash memory.
When the programming control program is transferred to RAM, ensure that the transfer
destination and the overlap RAM do not overlap, as this will cause data in the overlap RAM to
be rewritten.
Figure 17.11 Reading Overlap Data in User Mode and User Program Mode
Application program
Application program
Programming data
Emulation block
Execution state
Flash memory
Flash memory
Figure 17.12 Writing Overlap Data in User Program Mode
(emulation is performed
program execution state
on data written in RAM)
Programming control
(programming data)
Overlap RAM
Overlap RAM
RAM
RAM
SCI
SCI
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