S12SCIV2SLASHD datasheet(91/130 Pages) FREESCALE

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MC9S12H256 Device User Guide — V01.18

greatest risk when the MCU is not consuming power; e.g. if no system clock is present, or if clock rate is

very low which would reduce overall power consumption.

A.1.5 Absolute Maximum Ratings

Absolute maximum ratings are stress ratings only. A functional operation under or outside those maxima

is not guaranteed. Stress beyond those limits may affect the reliability or cause permanent damage of the

device.

This device contains circuitry protecting against damage due to high static voltage or electrical fields;

however, it is advised that normal precautions be taken to avoid application of any voltages higher than

maximum-rated voltages to this high-impedance circuit. Reliability of operation is enhanced if unused

inputs are tied to an appropriate logic voltage level (e.g., either VSS5 or VDD5).

Table A-1 Absolute Maximum Ratings1

NOTES:

1. Beyond absolute maximum ratings device might be damaged.

Num

Rating

Symbol

Min

Max

Unit

I/O, Regulator and Analog Supply Voltage

VDD5

–0.3

6.0

Digital Logic Supply Voltage 2

2. The device contains an internal voltage regulator to generate the logic and PLL supply out of the I/O supply.

The absolute maximum ratings apply when the device is powered from an external source.

VDD

–0.3

3.0

PLL Supply Voltage 2

VDDPLL

–0.3

3.0

Voltage difference VDDX1 to VDDX2 to VDDM and

VDDA

∆

VDDX

–0.3

0.3

Voltage difference VSSX to VSSR and VSSA

∆

VSSX

–0.3

0.3

Digital I/O Input Voltage

VIN

–0.3

6.0

Analog Reference

VRH, VRL

–0.3

6.0

XFC, EXTAL, XTAL inputs

VILV

–0.3

3.0

TEST input

VTEST

–0.3

10.0

Instantaneous Maximum Current

Single pin limit for all digital I/O pins except PU, PV

and PW 3

3. All digital I/O pins are internally clamped to VSSX1/2 and VDDX1/2, VSSM and VDDM or VSSA and VDDA.

–25

+25

Instantaneous Maximum Current

Single pin limit for Port PU, PV and PW 4

4. Ports PU, PV, PW are internally clamped to VSSM and VDDM.

–55

+55

Instantaneous Maximum Current

Single pin limit for XFC, EXTAL, XTAL5

–25

+25

Instantaneous Maximum Current

Single pin limit for TEST 6

–0.25

Storage Temperature Range

stg

– 65

155

°C

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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