Appendix A MCU Electrical Specifications
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
Freescale Semiconductor
781
The total power dissipation P
D
can be calculated from the equation below. Table A-6 below lists the power
dissipation components .
gives an overview of the supply currents.
Figure A-2. Supply Currents Overview
Table A-6. Power Dissipation Components
Power Component
Description
P
SUP
= V
SUP
I
SUP
Internal Power through VSUP pin
P
BCTL
= V
BCTL
I
BCTL
Internal Power through BCTL pin
P
INT
= V
DDX
I
VDDX
+ V
DDA
I
VDDA
+ V
DDM
I
VDDM
Internal Power through VDDX/A/M pins.
P
GPIO
= V
I/O
I
I/O
Power dissipation of external load driven by GPIO Port.
Assuming the load is connected between GPIO and
ground. This power component is included in P
INT
and
is subtracted from overall MCU power dissipation P
D
P
LIN
= V
LIN
I
LIN
Power dissipation of LINPHY
P
D
= P
VSUP
+ P
INT
+ P
BCTL
+ P
LIN
+ P
INT
- P
GPIO
VSUP
VDDA
VDDX[3:1]
VDDM
VSSX/A/M
LIN
VBAT
I
SUP
I
LIN
GND
GPIO
I
I/O
V
I/O
R
L2
BCTL
I
RBATP
I
VDDX