PXD10 datasheet(76/130 Pages) FREESCALE

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Electrical characteristics

PXD10 Microcontroller Data Sheet, Rev. 1

Freescale Semiconductor

•

Slow pads — These are the most common pads, providing a good compromise between transition

time and low electromagnetic emission.

•

Medium pads — These are provided in two types (M1 and M2) and provide transitions fast enough

for the serial communication channels. M2 pads include slew rate control.

•

Fast pads — These provide maximum speed. There are used for improved NEXUS debugging

capability.

•

SMD pads — These provide additional current capability to drive stepper motor loads.

•

Digital I/O with analog (J) pad — These provide input and output digital features and analog input

for ADC.

M2 and Fast pads can disable slew rate to reduce electromagnetic emission, at the cost of reducing AC

performance.

3.8.2

I/O input DC characteristics

Table 28 provides input DC electrical characteristics as described in Figure 10.

Figure 10. I/O input DC electrical characteristics definition

Table 28. I/O input DC electrical characteristics

Symbol

Parameter

Conditions1

Value

Unit

Min

Typ

Max

VIH

SR P Input high level CMOS Schmitt trigger

—

0.65VDD

—VDD + 0.3

VIL

SR P Input low level CMOS Schmitt trigger

—

0.3

—

0.35VDD

VHYS CC D Input hysteresis CMOS Schmitt trigger

—

0.1VDD

——

VIL

VIN

VIH

PDI = ‘1’

VDD

VHYS

(GPDI register of SIU)

PDI = ‘0’

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