MCF5282 Datasheet, PDF (609/766 Pages) Freescale Semiconductor, Inc – Microcontroller User’s Manual

Chapter 29
Reset Controller Module
The reset controller is provided to determine the cause of reset, assert the appropriate reset signals to the
system, and then to keep a history of what caused the reset. The Low Voltage Detection module, which
generates low-voltage detect (LVD) interrupts and resets, is implemented within the reset controller
module.
29.1 Features
Module features include:
• Seven sources of reset:
— External
— Power-on reset (POR)
— Watchdog timer
— Phase locked-loop (PLL) loss of lock
— PLL loss of clock
— Software
— LVD reset
• Software-assertable RSTO pin independent of chip reset state
• Software-readable status flags indicating the cause of the last reset
• LVD control and status bits for setup and use of LVD reset or interrupt
29.2 Block Diagram
Figure 29-1 illustrates the reset controller and is explained in the following sections.
Freescale Semiconductor
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
29-1