I am using the s12xep100, fbus = 40MHZ, fosc = 8Mhz, When in the pstop mode ,its consumption is about 20ma,
And if i reduce fbus from 40mhz to 8mhz by setting SYNR register . the current reduced to 14ma in the pstop mode .
can i just switch off the PLL model in pstop mode and start the PLL mode when wake up ? I tried the PLLSEL = 0 and PLLON = 0 instructions, but it doesn't affect the current;
according to the AN3289 and s12xep100 datasheet, the pstop mode's consumption (API , RTI ,COM enabled, PLL off, LCP mode) is about 274uA !!
And I have set all the unoccupied GPIO as input and pull-up or pull-down. it do reduced a little .