MC3S12RG128 Datasheet, PDF (507/546 Pages) Freescale Semiconductor, Inc – Microcontrollers

Appendix A
Electrical Characteristics
A.1 General
NOTE
The electrical characteristics given in this section are preliminary and
should be used as a guide only. Values cannot be guaranteed by Freescale
and are subject to change without notice.
This supplement contains the most accurate electrical information for the MC3S12RG128 microcontroller
available at the time of publication. The information should be considered PRELIMINARY and is subject
to change.
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 MC3S12RG128 utilizes several pins to supply power to the I/O ports, A/D converter, oscillator, PLL
and internal logic.
The V_DDA, V_SSA pair supplies the A/D converter and the internal voltage regulator.
MC3S12RG128 Data Sheet, Rev. 1.05
Freescale Semiconductor
507