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Preliminary User’s Manual U17566EE1V2UM00
Chapter 26 Reset
Several system reset functions are provided in order to initialize hardware and
registers.
26.1 Overview
Features summary
A reset can be caused by the following events:
• External reset signal RESET
Noise in the external reset signal is eliminated by an analog filter.
• Power-On-Clear (internal signal RESPOC)
• Overflow of the Watchdog Timer (internal signal RESWDT)
• Main or sub-oscillator fails (internal signals RESCMM, RESCMS)
As output, the reset function provides two internal reset signals:
• SYSRES (system reset)
• SYSRESWDT (Watchdog Timer reset)
26.1.1
General reset performance
The following figure shows the signals involved in the reset function:
Figure 26-1
Reset function signal diagram
RE
S
POC
RE
S
ET
RE
S
CMM
RE
S
CM
S
RE
S
WDT
RE
SS
TAT
NPB
Re
s
et logic circ
u
it
S
Y
S
RE
S
S
Y
S
RE
S
WDT
RE
S
POC: RE
SS
TAT = 01
H
RE
S
EXT: RE
SS
TAT = 02
H
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