SPC56EL70L3 datasheet(21/128 Pages) STMICROELECTRONICS

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SPC56EL70L3, SPC56EL70L5,PC564L70L3, SPC564L70L5

Introduction

127

The SIU provides the following features:



Centralized pad control on a per-pin basis

–

Pin function selection

–

Configurable weak pull-up/down

–

Configurable slew rate control (slow/medium/fast)

–

Hysteresis on GPIO pins

–

Configurable automatic safe mode pad control



Input filtering for external interrupts

1.5.23

Non-maskable interrupt (NMI)

The non-maskable interrupt with de-glitching filter supports high-priority core exceptions.

1.5.24

Boot assist module (BAM)

The BAM is a block of read-only memory with hard-coded content. The BAM program is

executed only if serial booting mode is selected via boot configuration pins.

The BAM provides the following features:



Enables booting via serial mode (FlexCAN or LINFlex-UART)



Supports programmable 64-bit password protection for serial boot mode



Supports serial bootloading of either Power Architecture code (default) or VLE code



Automatic switch to serial boot mode if internal flash memory is blank or invalid

1.5.25

System status and configuration module (SSCM)

The SSCM on this device features the following:



System configuration and status



Debug port status and debug port enable



Multiple boot code starting locations out of reset through implementation of search for

valid Reset Configuration Half Word



Sets up the MMU to allow user boot code to execute as either Power Architecture code

(default) or as VLE code out of flash memory



Triggering of device self-tests during reset phase of device boot

1.5.26

FlexCAN

The FlexCAN module is a communication controller implementing the CAN protocol

according to Bosch Specification version 2.0B. The CAN protocol was designed to be used

primarily as a vehicle serial data bus, meeting the specific requirements of this field: real-

time processing, reliable operation in the EMI environment of a vehicle, cost-effectiveness

and required bandwidth.

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