Electrical Characteristics

MC9S08QB8 Series MCU Data Sheet, Rev. 3

Freescale Semiconductor

7

3

Electrical Characteristics

3.1

Introduction

This chapter contains electrical and timing specifications for the MC9S08QB8 series of microcontrollers

available at the time of publication.

3.2

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

The classification is shown in the column labeled “C” in the parameter

tables where appropriate.

3.3

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 3 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

pull-up resistor associated with the pin is enabled.

Table 2. Parameter Classifications

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.