PXD20 datasheet(70/130 Pages) FREESCALE

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Electrical characteristics

PXD20 Microcontroller Data Sheet, Rev. 2

Preliminary—Subject to Change Without Notice

Freescale Semiconductor

Semiconductor Equipment and Materials International

805 East Middlefield Rd.

Mountain View, CA 94043

(415) 964-5111

MIL-SPEC and EIA/JESD (JEDEC) specifications are available from Global Engineering Documents at 800-854-7179 or

303-397-7956.

JEDEC specifications are available on the WEB at http://www.jedec.org.

4.6

EMI (electromagnetic interference) characteristics

4.7

Power management

4.7.1

Voltage regulator electrical characteristics

The internal voltage regulator requires an external NPN (BCP68 or NJD2873) ballast to be connected as shown in Figure 8 s

well as an external capacitance (CREG) to be connected to the device in order to provide a stable low voltage digital supply to

the device. Capacitances should be placed on the board as near as possible to the associated pins. Care should also be taken to

limit the serial inductance of the board to less than 15 nH.

Table 15. EMI testing specifications12

1 The reported emission level is the value of the maximum emission, rounded up to the next whole number.

2 IEC Level Maximum:, L is less than or equal to 24 dBµV, K is less than or equal to 30 dBµV.

Symbol

Parameter

Conditions

Clocks

Frequency

Range

Level

(Typ)

Unit

Radiated

Emissions

VEME

Device Configuration,

test conditions and EM

testing per standard

IEC61967-2

FOSC — 8 MHz, External

Crystal

FCPU —124 MHz

FBUS —124 MHz

No PLL Frequency

Modulation

150 kHz –

50 MHz

dBµV

50 MHz –

150 MHz

150 MHz –

500 MHz

500 MHz –

1000 MHz

IEC Level

FOSC — 8 MHz, External

Crystal

FCPU —124 MHz

FBUS —124 MHz

2% PLL Frequency

Modulation

150 kHz –

50 MHz

dBµV

50 MHz –

150 MHz

150 MHz –

500 MHz

500 MHz –

1000 MHz

IEC Level

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