Appendix A
Electrical Characteristics
A.1
General
This supplement contains the most accurate electrical information for the MC9S12P-Family
microcontroller available at the time of publication.
This introduction is intended to give an overview on several common topics like power supply, current
injection etc.
A.1.1
Parameter Classification
The electrical parameters shown in this supplement are guaranteed by various methods. To give the
customer a better understanding the following classification is used and the parameters are tagged
accordingly in the tables where appropriate.
NOTE
This classification is shown in the column labeled “C” in the parameter
tables where appropriate.
P:
Those parameters are guaranteed during production testing on each individual device.
C:
Those parameters are achieved by the design characterization by measuring a statistically relevant
sample size across process variations.
T:
Those parameters are achieved by design characterization on a small sample size from typical
devices under typical conditions unless otherwise noted. All values shown in the typical column
are within this category.
D:
Those parameters are derived mainly from simulations.
A.1.2
Power Supply
The VDDA, VSSA pin pairs supply the A/D converter and parts of the internal voltage regulator.
The VDDX, VSSX pin pairs [2:1] supply the I/O pins.
VDDR supplies the internal voltage regulator.
All VDDX pins are internally connected by metal.
All VSSX pins are internally connected by metal.
VDDA, VDDX and VSSA, VSSX are connected by diodes for ESD protection.
S12P-Family Reference Manual, Rev. 1.13
Freescale Semiconductor
501
FREESCALE [ Freescale ]
