at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 85

• Manufacturer Part Number: at91sam9g20-cu
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

14. Reset Controller (RSTC)
14.1
14.2
6384B–ATARM–15-Dec-08
Overview
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.
Figure 14-1. Reset Controller Block Diagram
Backup Supply
Main Supply
WDRPROC
POR
POR
wd_fault
NRST
nrst_out
Reset Controller
Counter
Startup
Manager
NRST
AT91SAM9G20 Preliminary
user_reset
exter_nreset
SLCK
Manager
Reset
State
rstc_irq
proc_nreset
periph_nreset
backup_neset
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