MPC5643L datasheet(41/98 Pages) FREESCALE

41 / 98 page

Package pinouts and signal descriptions

MPC5643L Microcontroller Data Sheet, Rev. 3

Preliminary—Subject to Change Without Notice

Freescale Semiconductor

2.2.3

System pins

Table 6 and Table 7 contain information on pin functions for this device. The pins listed in Table 6 are single-function pins. The

pins shown in Table 7 are multi-function pins, programmable via their respective Pad Configuration Register (PCR) values.

2.2.4

Pin muxing

Table 7 defines the pin list and muxing for this device.

Each row of Table 7 shows all the possible configurations for each pin, via the alternate functions. The alternate functions are

shown in the Alternate Function column and are labeled ALT0, ALT1, ALT2, and ALT3. The default function assigned to each

pin after reset is indicated by ALT0.

Some pins have more than four alternate functions. These additional alternate functions are shown in the Other Functions

column. This column also contains information related to the External Interrupt capability and the boot configuration. Pins

marked as external interrupt capable can also be used to resume from STOP and HALT mode.

NOTE

Pins labeled “NC” are to be left unconnected. Any connection to an external circuit or

voltage may cause unpredictable device behavior or damage.

Pins labeled “Reserved” are to be tied to ground. Not doing so may cause unpredictable

device behavior.

Table 6. System pins

Symbol

Description

Direction

Package

144-

257-

ball

Dedicated pins

MDO0

Nexus Message Data Output — line 0

Output only

NMI

Non Maskable Interrupt

Input only

XTALIN

Input for oscillator amplifier circuit and internal clock generator

Input only

XTALOUT

Oscillator amplifier output

Output only

TMS

JTAG state machine control

Input only

M16

TCK

JTAG clock

Input only

L15

JCOMP

JTAG compliance select

Input only

123

C10

Reset pin

RESET

Bidirectional reset with Schmitt-Trigger characteristics and noise filter. This

pin has medium drive strength.

Bidirectional

MPC5643L Datasheet(PDF) 41 Page - Freescale Semiconductor, Inc

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