CHAPTER 15 STANDBY FUNCTIONUser’s Manual U14826EJ5V0UD152(c) Releasing by RESET inputWhen HALT mode is released by the RESET signal, execution branches to the reset vector address inthe same manner as the ordinary reset operation, and program execution starts.Figure 15-3. Releasing HALT Mode by RESET InputHALTinstructionRESETsignalWaitNoteResetperiodHALT modeOperatingmodeOscillationstabilizationwait statusClockOperatingmodeOscillationstopOscillation OscillationNote In theμPD789860, 215 /f X or 217 /f X can be selected by using the mask option.In theμPD78E9860A, 215 /f X : 6.55 ms (@fX = 5.0 MHz operation)In theμPD789861 and 78E9861A, 27 /f CC: 128μs (@f CC = 1.0 MHz operation)Remarks 1. f X : System clock oscillation frequency (ceramic/crystal oscillation)2. f CC: System clock oscillation frequency (RC oscillation)Table 15-2. Operation After Releasing HALT ModeReleasing Source MK×× IE Operation0 0 Executes next address instruction.0 1 Executes interrupt servicing.Maskable interrupt request1 × Retains HALT mode.Non-maskable interrupt requestof watchdog timer− × Executes interrupt servicing.RESET input − − Reset processing×: don’t care
