HONEYWELL 10105/2/1 Pulse input module Channel isolation module

Wake-up from input pins can be considered as a continuation of normal execution, nop command is recommended to follow the stopexe command, the detail information for Power-Save mode shows below:  IHRC, ILRC and EOSC oscillator modules: No change, keep active if it was enabled 

 System clock: Disable, therefore, CPU stops execution 

 OTP memory is turned off 

 Timer16: Stop counting if system clock is selected or the corresponding oscillator module is disabled; otherwise, it keeps counting. 

 Wake-up sources: IO toggle or Timer16.

Power-Down mode (“stopsys”) 

Power-Down mode is the state of deeply power-saving with turning off all the oscillator modules. By using the “stopsys” instruction, this chip will be put on Power-Down mode directly. The internal low frequency RC oscillator must be enabled before entering the Power-Down mode, means that bit 2 of register clkmd (0x03) must be set to high before issuing “stopsys” command in order to resume the system when wakeup. The following shows the internal status of PMC234/PMS234 in detail when “stopsys” command is issued:  All the oscillator modules are turned off

Wake-up 

After entering the Power-Down or Power-Save modes, the PMC234/PMS234 can be resumed to normal operation by toggling IO pins, Timer16 interrupt is available for Power-Save mode ONLY. Fig. 16 shows the differences in wake-up sources between STOPSYS and STOPEXE.When using the IO pins to wake-up the PMC234/PMS234, registers padier and pbdier should be properly set to enable the wake-up function for every corresponding pin. The wake-up time for normal wake-up is about 1024 ILRC clocks counting from wake-up event; fast wake-up can be selected to reduce the wake-up time by misc register. For fast wake-up mechanism, the wake-up time is 128 system clocks from IO toggling if STOPEXE was issued, and 128 system clocks plus oscillator (IHRC or ILRC) stable time from IO toggling if STOPSYS was issued. The oscillator stable time is the time for IHRC or ILRC oscillator from power-on, depending on which oscillator is used as system clock source. Please notice that the fast wake-up will turn off automatically when EOSC is selected as system clock.

                                                                        

Application industry

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