Datasheet

Factory Programmed Memory

56F8346 Technical Data, Rev. 15

Freescale Semiconductor 79

Preliminary

4.8 Factory Programmed Memory

The Boot Flash memory block is programmed during manufacturing with a default Serial Bootloader

program. The Serial Bootloader application can be used to load a user application into the Program and

Data Flash (NOT available in the 56F8146 device) memories of the device. The 56F83xx SCI/CAN

Bootloader User Manual (MC56F83xxBLUM) provides detailed information on this firmware. An

application note, Production Flash Programming (AN1973), details how the Serial Bootloader program

can be used to perform production Flash programming of the on-board Flash memories as well as other

potential methods.

Like all the Flash memory blocks, the Boot Flash can be erased and programmed by the user. The Serial

Bootloader application is programmed as an aid to the end user, but is not required to be used or maintained

in the Boot Flash memory.

Part 5 Interrupt Controller (ITCN)

5.1 Introduction

The Interrupt Controller (ITCN) module is used to arbitrate between various interrupt requests (IRQs), to

signal to the 56800E core when an interrupt of sufficient priority exists, and to what address to jump in

order to service this interrupt.

5.2 Features

The ITCN module design includes these distinctive features:

• Programmable priority levels for each IRQ

• Two programmable Fast Interrupts

• Notification to SIM module to restart clocks out of Wait and Stop modes

• Drives initial address on the address bus after reset

For further information, see Table 4-5, Interrupt Vector Table Contents.

FCMB15_DATA $BB Message Buffer 15 Data Register

FCMB15_DATA $BC Message Buffer 15 Data Register

FCMB15_DATA $BD Message Buffer 15 Data Register

FCMB15_DATA $BE Message Buffer 15 Data Register

Reserved

Table 4-38 FlexCAN Registers Address Map (Continued)

(FC_BASE = $00 F800)

FlexCAN is NOT available in the 56F8146 device