SPC560P34L1 datasheet(19/103 Pages) STMICROELECTRONICS

19 / 103 page

SPC560P34L1, SPC560P34L3, SPC560P40L1, SPC560P40L3

Introduction

Doc ID 16100 Rev 7

19/103

1.5.16

System integration unit – Lite (SIUL)

The SPC560P34/SPC560P40 SIUL controls MCU pad configuration, external interrupt,

general purpose I/O (GPIO), and internal peripheral multiplexing.

The pad configuration block controls the static electrical characteristics of I/O pins. The

GPIO block provides uniform and discrete input/output control of the I/O pins of the MCU.

The SIUL provides the following features:

●

Centralized general purpose input output (GPIO) control of up to 49 input/output pins

and 16 analog input-only pads (package dependent)

●

All GPIO pins can be independently configured to support pull-up, pull-down, or no pull

●

Reading and writing to GPIO supported both as individual pins and 16-bit wide ports

●

All peripheral pins, except ADC channels, can be alternatively configured as both

general purpose input or output pins

●

ADC channels support alternative configuration as general purpose inputs

●

Direct readback of the pin value is supported on all pins through the SIUL

●

Configurable digital input filter that can be applied to some general purpose input pins

for noise elimination

●

Up to 4 internal functions can be multiplexed onto 1 pin

1.5.17

Boot and censorship

Different booting modes are available in the SPC560P34/SPC560P40: booting from internal

flash memory and booting via a serial link.

The default booting scheme uses the internal flash memory (an internal pull-down resistor is

used to select this mode). Optionally, the user can boot via FlexCAN or LINFlex (using the

boot assist module software).

A censorship scheme is provided to protect the content of the flash memory and offer

increased security for the entire device.

A password mechanism is designed to grant the legitimate user access to the non-volatile

memory.

Boot assist module (BAM)

The BAM is a block of read-only memory that is programmed once and is identical for all

SPC560Pxx devices that are based on the e200z0h core. The BAM program is executed

every time the device is powered on if the alternate boot mode has been selected by the

user.

The BAM provides the following features:

●

Serial bootloading via FlexCAN or LINFlex

●

Ability to accept a password via the used serial communication channel to grant the

legitimate user access to the non-volatile memory

1.5.18

Error correction status module (ECSM)

The ECSM provides a myriad of miscellaneous control functions regarding program-visible

information about the platform configuration and revision levels, a reset status register, a

software watchdog timer, wakeup control for exiting sleep modes, and information on

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