HCS08 datasheet(261/290 Pages) MOTOROLA

261 / 290 page

Data Sheet — MC9S08GB60/D V1.5

MOTOROLA

261

MC9S08GB/GT

Appendix A Electrical Characteristics

A.1 Introduction

This section contains electrical and timing specifications.

A.2 Absolute Maximum Ratings

Absolute maximum ratings are stress ratings only, and functional operation at the maxima is not

guaranteed. Stress beyond the limits specified in Table A-1 may affect device reliability or cause

permanent damage to the device. For functional operating conditions, refer to the remaining tables in this

section.

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 (for instance, either VSS or VDD) or the programmable

pull-up resistor associated with the pin is enabled.

Table A-1 Absolute Maximum Ratings

Rating

Symbol

Value

Unit

Supply voltage

VDD

–0.3 to +3.8

Maximum current into VDD

IDD

120

Digital input voltage

VIn

–0.3 to VDD + 0.3

Instantaneous maximum current

Single pin limit (applies to all port pins)(1), (2), (3)

NOTES:

1. Input must be current limited to the value specified. To determine the value of the required

current-limiting resistor, calculate resistance values for positive (VDD) and negative (VSS)

clamp voltages, then use the larger of the two resistance values.

2. All functional non-supply pins are internally clamped to VSS and VDD.

3. Power supply must maintain regulation within operating VDD range during instantaneous

and operating maximum current conditions. If positive injection current (VIn >VDD)is

greater than IDD, the injection current may flow out of VDD and could result in external

power supply going out of regulation. Ensure external VDD load will shunt current greater

than maximum injection current. This will be the greatest risk when the MCU is not

consuming power. Examples are: if no system clock is present, or if the clock rate is very

low which would reduce overall power consumption.

± 25

Storage temperature range

Tstg

–55 to 150

°C

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