SH7280 Datasheet, PDF (1478/1726 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

Section 26 Flash Memory
(4) State in which Interrupts are Ignored
In the following modes or period, interrupt requests are ignored; they are not executed and the
interrupt sources are not retained.
• Boot mode
• Programmer mode
(5) Compatibility with Programming/Erasing Program of Conventional F-ZTAT SH
Microcontroller
A programming/erasing program for flash memory used in the conventional F-ZTAT SH
microcontroller which does not support download of the on-chip program by a SCO transfer
request cannot run in this LSI.
Be sure to download the on-chip program to execute programming/erasing of flash memory in this
LSI.
(6) Monitoring Runaway by WDT
Unlike the conventional F-ZTAT SH microcontroller, no countermeasures are available for a
runaway by WDT during programming/erasing by the downloaded on-chip program.
Prepare countermeasures (e.g. use of the user branch routine and periodic timer interrupts) for
WDT while taking the programming/erasing time into consideration as required.
Rev. 1.00 Jun. 26, 2008 Page 1448 of 1692
REJ09B0393-0100