HCS12 datasheet(85/126 Pages) NXP

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Device User Guide — 9S12KT256DGV1/D V01.09

Freescale Semiconductor

Insure external VDD5 load will shunt current greater than maximum injection current. This will be the

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 Ratings

Num

Rating

Symbol

Min

Max

Unit

I/O, Regulator and Analog Supply Voltage

VDD5

-0.3

6.5

Internal Logic Supply Voltage1

NOTES:

1. 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 (1)

VDDPLL

-0.3

3.0

Voltage difference VDDX to VDDR 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

6.5

Analog Reference

VRH, VRL

-0.3

6.5

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 2

2. All digital I/O pins are internally clamped to VSSX and VDDX, VSSR and VDDR or VSSA and VDDA.

-25

+25

Instantaneous Maximum Current

Single pin limit for XFC, EXTAL, XTAL3

3. These pins are internally clamped to VSSPLL and VDDPLL

-25

+25

Instantaneous Maximum Current

Single pin limit for TEST4

4. This pin is clamped low to VSSR, but not clamped high. This pin must be tied low in applications.

-0.25

Operating Temperature Range (packaged)

– 40

125

°C

Operating Temperature Range (junction)

– 40

140

°C

Storage Temperature Range

stg

– 65

155

°C

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