SPC560P54x datasheet(33/105 Pages) STMICROELECTRONICS

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SPC56xP54x, SPC56xP60x

Package pinouts and signal descriptions

104

2.2.3

Pin muxing

Table 7 defines the pin list and muxing for the SPC56xP54x/SPC56xP60x devices relative

to Full-featured version.

Each row of Table 7 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.

Pins marked as external interrupt capable can also be used to resume from STOP and

HALT mode.

SPC56xP54x/SPC56xP60x devices provide four 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.



Symmetric pads are designed to meet FlexRay requirements.

Medium and Fast pads can use slow configuration to reduce electromagnetic emission, at

the cost of reducing AC performance.

2. LQFP176 available only as development package.

3. In this pin there is an internal pull; refer to JTAGC chapter in the device reference manual for pull direction.

4. Its configuration can be set up by the PCR[108] register inside the SIU module. See SIUL chapter in the device reference

manual.

Table 7. Pin muxing(1)

Port

PCR

No.

Alternate

function(2),

(3)

Functions

Peripheral

(4)

I/O

direction

(5)

Pad speed(6)

SRC = 0 SRC = 1

LQFP

100

LQFP

144

LQFP

176(7)

Port A

A[0]

PCR[0]

ALT0

ALT1

ALT2

ALT3

—

GPIO[0]

ETC[0]

SCK_2

F[0]

EIRQ[0]

SIUL

eTimer_0

DSPI_2

FCCU

SIUL

I/O

Slow

Medium

A[1]

PCR[1]

ALT0

ALT1

ALT2

ALT3

—

GPIO[1]

ETC[1]

SOUT_2

F[1]

EIRQ[1]

SIUL

eTimer_0

DSPI_2

FCCU

SIUL

I/O

Slow

Medium

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