HS2140EPI61H Renesas Electronics America, HS2140EPI61H Datasheet - Page 202

• Manufacturer Part Number: HS2140EPI61H
• Description: DEV EMULATOR BASE UNIT H8S/2140
• Manufacturer: Renesas Electronics America
• Type: Microcontrollerr

Specifications of HS2140EPI61H

• Contents: E6000 Emulator and CD-ROM
• For Use With/related Products: H8S/2140
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

[General] page (cont)
182
[Enable read and write on the
fly]
When this box is checked, it is possible to access the target system
memory while the user program is running. Do not check this box if you
require realtime emulation.
- When accessing the on-chip ROM, on-chip RAM, or emulation memory
High-performance Embedded Workshop accesses the memory directly
as the bus mastership is released to the emulator without breaking the
user program. The MCU waits for approximately 80 us while operating at
20 MHz.
- When accessing the on-chip I/O, DTCRAM, or user memory
Memory is accessed with breaking the user program. This pause is
approximately 2 ms while operating at 20 MHz.
When the on-chip RAM is disabled, an access to this area is not available
during the user program execution.
Note:
When the content of the memory is modified during the user program
execution (e.g. modification in the [Memory] window or by the
MEMORY_EDIT command), High-performance Embedded Workshop
reads the content to update the value.
High-performance Embedded Workshop also reads the memory content
when the content has been updated by operations such as selecting
[Refresh] from the popup menu of the [Memory] window. In this case, the
content of memory is read and then updated in each of the windows.
To prevent unnecessary reading of the memory content, close the
window displaying the memory content (such as the [Memory] or
[Disassembly] window) or make the settings so that the content will not
be updated.
The [Monitor] window, or the [Watch] window that satisfies the conditions
listed below displays the memory content. Note that, however, opening
these windows does not prevent realtime operation because the method
of updating the memory content in these windows is different.
Conditions:
1. Registered symbols are only allocated to general-purpose registers.
2. Registered symbols are only allocated to the monitor range set by the
[Monitor] function (the mark R is colored in blue).
3. Registered symbols are comprised of those with the conditions 1 and 2
listed above.