MPC5601PEF0MLL6R datasheet(23/95 Pages) FREESCALE

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MPC5602P Microcontroller Data Sheet, Rev. 4.1

Freescale Semiconductor

2.2.2

System pins

Table 4 and Table 5 contain information on pin functions for the MPC5602P devices. The pins listed in Table 4 are

single-function pins. The pins shown in Table 5 are multi-function pins, programmable via their respective pad configuration

2.2.3

Pin multiplexing

Table 5 defines the pin list and muxing for the MPC5602P devices.

Each row of Table 5 shows all the possible ways of configuring each pin, via alternate functions. The default function assigned

to each pin after reset is the ALT0 function.

MPC5602P devices provide three main I/O pad types, depending on the associated functions:

•

Slow pads are the most common, providing a compromise between transition time and low electromagnetic emission.

•

Medium pads provide fast enough transition for serial communication channels with controlled current to reduce

electromagnetic emission.

•

Fast pads provide maximum speed. They are used for improved NEXUS debugging capability.

Medium and Fast pads can use slow configuration to reduce electromagnetic emission, at the cost of reducing AC performance.

For more information, see “Pad AC Specifications” in the device data sheet.

Table 4. System pins

Symbol

Description

Direction

Pad speed1

1 SRC values refer to the value assigned to the Slew Rate Control bits of the pad configuration register.

SRC = 0 SRC = 1 64-pin 100-pin

Dedicated pins

NMI

Non-maskable Interrupt

Input only

Slow

—

XTAL

Analog output of the oscillator amplifier

circuit—needs to be grounded if oscillator is

used in bypass mode

——

—

EXTAL

Analog input 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

——

—

TDI

JTAG test data input

Input only

Slow

—

TMS

JTAG state machine control

Input only

Slow

—

TCK

JTAG clock

Input only

Slow

—

TDO

JTAG test data output

Output only

Slow

Fast

Reset pin

RESET

Bidirectional reset with Schmitt trigger

characteristics and noise filter

Bidirectional Medium

—

Test pin

VPP_TEST Pin for testing purpose only. To be tied to ground

in normal operating mode.

——

—

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