Datasheet

57
6120F–ATARM–03-Oct-06
AT91SAM7X512/256/128 Preliminary
13. Reset Controller (RSTC)
13.1 Overview
The Reset Controller (RSTC), based on power-on reset cells, handles all the resets of the sys-
tem without any external components. It reports which reset occurred last.
The Reset Controller also drives independently or simultaneously the external reset and the
peripheral and processor resets.
A brownout detection is also available to prevent the processor from falling into an unpredictable
state.
13.2 Block Diagram
Figure 13-1. Reset Controller Block Diagram
NRST
Startup
Counter
proc_nreset
wd_fault
periph_nreset
SLCK
Reset
State
Manager
Reset Controller
brown_out
bod_rst_en
rstc_irq
NRST
Manager
exter_nreset
nrst_out
Main Supply
POR
WDRPROC
user_reset
Brownout
Manager
bod_reset