ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 223

• Manufacturer Part Number: ATSAM3S-EK
• Description: KIT EVAL FOR ATSAM3S4C
• Manufacturer: Atmel
• Series: SAM3Sr
• Type: MCUr

Specifications of ATSAM3S-EK

• Contents: Board, Cables, Power Supply
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex-M3
• Kit Contents: Board
• Features: TFT Colour LCD Display, SD/MMC Interface
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• For Use With/related Products: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

12. Reset Controller (RSTC)
12.1
12.2
12.3
12.3.1
6500C–ATARM–8-Feb-11
Description
Block Diagram
Functional Description
Reset Controller 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.
Figure 12-1. Reset Controller Block Diagram
The Reset Controller is made up of an NRST Manager and a Reset State Manager. It runs at
Slow Clock and generates the following reset signals:
These reset signals are asserted by the Reset Controller, either on external events or on soft-
ware action. The Reset State Manager controls the generation of reset signals and provides a
signal to the NRST Manager when an assertion of the NRST pin is required.
The NRST Manager shapes the NRST assertion during a programmable time, thus controlling
external device resets.
• proc_nreset: Processor reset line. It also resets the Watchdog Timer.
• periph_nreset: Affects the whole set of embedded peripherals.
• nrst_out: Drives the NRST pin.
core_backup_reset
vddcore_nreset
WDRPROC
wd_fault
NRST
nrst_out
Reset Controller
Manager
NRST
user_reset
exter_nreset
SAM3S Preliminary
Manager
Reset
State
SLCK
rstc_irq
proc_nreset
periph_nreset
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