MPC5646C datasheet(13/114 Pages) FREESCALE

13 / 114 page

MPC5646C Microcontroller Data Sheet, Rev. 3

Preliminary—Subject to Change Without Notice

Freescale Semiconductor

F = Fast1, 2

I = Input only with analog feature1

A = Analog

3.2

System pins

The system pins are listed in Table 3.

3.3

Functional ports

The functional port pins are listed in Table 4.

Table 3. System pin descriptions

Port pin

Function

I/O

direction

Pad

type

RESET

config.

Pin number

RESET

Bidirectional reset with Schmitt-Trigger

characteristics and noise filter.

I/O

Input, weak

pull-up only

after

PHASE2

EXTAL

Analog output of the oscillator amplifier

circuit, when the oscillator is not in bypass

mode.

Analog input for the clock generator when

the oscillator is in bypass mode.

I/O

1 For analog pads, it is not recommended to enable IBE if APC is enabled to avoid extra current in middle range

voltage.

—58

XTAL

Analog input of the oscillator amplifier

circuit. Needs to be grounded if oscillator

bypass mode is used.

IA1

—56

Table 4. Functional port pin descriptions

Port

PCR

Function

Pin number

PA[0]

PCR[0]

AF0

AF1

AF2

AF3

—

GPIO[0]

E0UC[0]

CLKOUT

E0UC[13]

WKPU[19]

CAN1RX

SIUL

eMIOS_0

MC_CGM

eMIOS_0

WKPU

FlexCAN_1

I/O

M/S

Tristate

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