Device User Guide — 9S12C128DGV1/D V01.05

Two cases with internal voltage regulator enabled and disabled must be considered:

1. Internal Voltage Regulator disabled

PINT = IDD VDD + IDDPLL VDDPLL + IDDA VDDA

P

IO

= R

DSON

I

IO

2

i

 

i

 

 

 

 

 

 

 

 

 

 

 

 

Which is the sum of all output currents on I/O ports associated with VDDX and VDDM.

For RDSON is valid:

 

VOL

RDSON

= -----------;for outputs driven low

respectively

 

IOL

VDD5 VOH

RDSON

= ------------------------------------;for outputs driven high

 

 

IOH

2. Internal voltage regulator enabled

PINT = IDDR VDDR + IDDA VDDA

IDDR is the current shown in Table A-8 and not the overall current flowing into VDDR, which additionally contains the current flowing into the external loads with output high.

P

IO

= R

DSON

I

IO

2

i

 

i

 

 

 

 

 

 

 

 

 

 

 

 

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Motorola MC9S12GC-Family, MC9S12C-Family warranty Pint = IDD ⋅ VDD + Iddpll ⋅ Vddpll + Idda ⋅ Vdda