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Appendix A Electrical Characteristics

MC9S12XDP512 Data Sheet, Rev. 2.21

Freescale Semiconductor

1239

Appendix A

Electrical Characteristics

A.1

General

This supplement contains the most accurate electrical information for the S12XD, S12XB & S12XA

families 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.

Those parameters are guaranteed during production testing on each individual device.

Those parameters are achieved by the design characterization by measuring a statistically relevant

sample size across process variations.

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.

Those parameters are derived mainly from simulations.

A.1.2

Power Supply

The MC9S12XDP512RMV2 utilizes several pins to supply power to the I/O ports, A/D converter,

oscillator, and PLL as well as the digital core.

The VDDA, VSSA pair supplies the A/D converter and parts of the internal voltage regulator.

The VDDX, VSSX, VDDR, and VSSR pairs supply the I/O pins, VDDR supplies also the internal voltage

regulator.

VDD1, VSS1, VDD2, and VSS2 are the supply pins for the digital logic, VDDPLL, VSSPLL supply the

oscillator and the PLL.

VSS1 and VSS2 are internally connected by metal.

VDDA, VDDX, VDDR as well as VSSA, VSSX, VSSR are connected by anti-parallel diodes for ESD

protection.

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