M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 500

• Manufacturer Part Number: M37702E6BFS
• Description: EPROM MCU/8BIT CMOS EMULATION CH
• Manufacturer: Renesas Electronics America

Specifications of M37702E6BFS

• Accessory Type: Emulator EPROM MCU
• For Use With/related Products: 7702
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

APPENDIX
Appendix 6. Q & A
21–54
Q
A
same value as the contents of the reset bector address to the watchdog timer interrupt bector
address is processed , how does it result in?
it result in?
When detecting the software runaway by the watchdog timer, if not software reset but setting the
When branching the reset branch address within the watchdog timer interrupt routine, how does
The CPU registers and the SFR are not initialized in the above-mentioned way. Accordingly,
it is necessary that you must perform the initial setting for these all by software.
The processor interrupt priority level (IPL) retains “7” of the watchdog timer interrupt priority
level, and that is not initialized. Consequently, all interrupt requests are not accepted.
When rewriting the IPL by software, store once the 16-bit immediate value to the stack area
and next return that 16-bit immediate value to all bits of the processor status register (PS).
We recommend software reset in order to initialize the microcomputer for software runaway.
7702/7703 Group User’s Manual
Watchdog timer