56F8335 datasheet(17/160 Pages) FREESCALE

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Signal Pins

56F8335 Technical Data, Rev. 1

Freescale Semiconductor

Preliminary

2.2 Signal Pins

After reset, each pin is configured for its primary function (listed first). Any alternate functionality must

be programmed.

EMI is not functional in this package; since only part of the address/data bus is bonded out, use as GPIO

pins.

Note: Signals in italics are NOT available in the 56F8135 device.

If the “State During Reset” lists more than one state for a pin, the first state is the actual reset state. Other

states show the reset condition of the alternate function, which you get if the alternate pin function is

selected without changing the configuration of the alternate peripheral. For example, the A8/GPIOA0 pin

shows that it is tri-stated during reset. If the GPIOA_PER is changed to select the GPIO function of the

pin, it will become an input if no other registers are changed.

Table 2-2 Signal and Package Information for the 128-Pin LQFP

Signal

Name

Pin No.

Type

State

During

Reset

Signal Description

VDD_IO

Supply

I/O Power — This pin supplies 3.3V power to the chip I/O

interface and also the Processor core throught the on-chip

voltage regulator, if it is enabled.

VDD_IO

112

VDDA_ADC

Supply

ADC Power — This pin supplies 3.3V power to the ADC

modules. It must be connected to a clean analog power supply.

VDDA_OSC_

PLL

Supply

Oscillator and PLL Power — This pin supplies 3.3V power to

the OSC and to the internal regulator that in turn supplies the

Phase Locked Loop. It must be connected to a clean analog

power supply.

VSS

Supply

Ground — These pins provide ground for chip logic and I/O

drivers.

VSS

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