52
4929B–AUTO–01/07
ATA6264 [Preliminary]
Necessary for operation:
VPERI > Reset threshold, VCORE > Reset threshold
Operating conditions of all other supply pins:
VK30, VEVZ and VVSAT are within functional range limits, Tj = –40°C to 150°C
Other pins:
As defined in Section 4. ”Functional Range” on page 8.
Table 16-2. Electrical Characteristics – Watchdog Function
No. Parameters Test Conditions Pin Symbol Min Typ. Max. Unit Type*
15.1 Oscillator frequency fos –5% 100 +5% kHz A
15.2 Power-up extension of RESQ
signal RESQ tRESQ 16 16 A
15.3
Start of first watchdog trigger
window after rising edge at
RESQ
t12 12 A
15.4 Maximum width of first
watchdog-trigger window t8 8 A
15.5
Maximum time for prescaler
configuration after first
watchdog-trigger command
t1 1 A
15.6 Programmed watchdog cycle tWD as set by prescaler
(default 16 ms) tWD tWD A
15.7 Start of programmed watchdog
window
75% ×
tWD
75% ×
tWD A
15.8 Max. programmed window
duration
50% ×
tWD
50% ×
tWD A
15.9 Time for RESQ = low after
watchdog timeout (Missing watchdog trigger) RESQ t 16 16 A
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
100
fos
----------
100
fos
----------
100
fos
----------
100
fos
----------
100
fos
----------