Ata6264 [preliminary, Figure 15-2. functional principle of resq, resq2 – Atmel ATA6264 User Manual
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4929B–AUTO–01/07
ATA6264 [Preliminary]
Figure 15-2. Functional Principle of RESQ, RESQ2
V
EVZGOOD
SPI
communication
Re-configure prescaler while
1 st and 2nd trigger watchdog
command
chip
internal
trigger
window
RESQ2
RESQ
16 ms
16 ms
WD cyc*
WD cyc*
t
t
t
t
"V
CORE
-OK"
"V
PERI
-OK"
t
t
t
an
y diff
erent
SPI CMD
re-configure
prescaler
T
rg Wdg
CMD
T
rg Wdg
CMD
T
rg Wdg
CMD
4 ms
4 ms
* Watchdog cycle, see pages 48 and 49