SAM3N00B Atmel Corporation, SAM3N00B Datasheet - Page 209
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SAM3N00B
Manufacturer Part Number
SAM3N00B
Description
Manufacturer
Atmel Corporation
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12. Reset Coontroller (RSTC)
12.1
12.2
12.3
11011A–ATARM–04-Oct-10
Description
Embedded Characteristics
Block Diagram
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.
The Reset Controller is based on a Power-on-Reset cell, and a Supply Monitor on VDDCORE.
The Reset Controller is capable to return to the software the source of the last reset, either a
general reset, a wake-up reset, a software reset, a user reset or a watchdog reset.
The Reset Controller controls the internal resets of the system and the NRST pin input/output. It
is capable to shape a reset signal for the external devices, simplifying to a minimum connection
of a push-button on the NRST pin to implement a manual reset.
The configuration of the Reset Controller is saved as supplied on VDDIO.
Figure 12-1. Reset Controller Block Diagram
core_backup_reset
vddcore_nreset
WDRPROC
wd_fault
NRST
nrst_out
Reset Controller
Manager
NRST
user_reset
exter_nreset
Manager
Reset
State
SLCK
rstc_irq
proc_nreset
periph_nreset
SAM3N
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