Atmel ATA6264 - Page 42

42
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
any different
SPI CMD
re-configure
prescaler
Trg Wdg CMD Trg Wdg CMD Trg Wdg CMD
4 ms4 ms
* Watchdog cycle, see pages 48 and 49