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IMPORTANT
Note on Interface with the Target System:
• The pin that connects to the target system is pulled-up by the emulation pod probe using local
resistors. For the difference in electric characteristics between the actual MCU and the emulator,
see "Chapter 4. Specifications" (page 27).
Pullup resistors of Init4* pin
To avoid high impedance, this pin is pulled-up with a 510kΩ resistor. These pullup resistors
cannot be removed.
Note on Debug Commands during STP/WIT Instruction:
• When a debug command (e.g. referencing memory) is issued during execution of STP/WIT
instruction, STP/WIT instruction is canceled. And when the debug program has completed, the
following instructions are executed.
Note on Real-Time RAM Monitor:
• Word access from an odd-numbered address cannot be correctly displayed. This restriction of the
MCU - emulator interface cannot be avoided. Use the optional function of assembler AS79 to
arrange word data to start from an even-numbered address.
Note on Coverage Measurement:
• The trace data output from the MCU is operational code address information only. Make note of
the fact that, in coverage measurement, the calculation result is unpredictable because the operand
address is not tagged.
Note on Disabling Watchdog Function:
•When disabling the watchdog timer during programming, do not open the DUMP window, the
memory window and the RAM monitor window in the area which contains the special function
select register 2 (address 64h). When displaying address 64h, it is not possible to disable the timer.
Notes on Service-Life of the MCU's Internal Flash ROM:
•With emulators of the 7900 Series, programs are downloaded to the MCU's flash ROM when
debugging in the single-chip mode and memory expansion mode. Because the number of write/
erase cycles of this ROM is limited, the ROM must be replaced when at the end of its service-life.
• If the following errors occur frequently during program download, replace the MCU board
(M37906T-PRBM).
Flash memory erase error ERROR (11508)
Flash memory verify error ERROR (11509)
To purchase the MCU board (M37906T-PRBM) for replacement, contact your local distributor.