Datasheet

DC and AC parameters STM705, STM706, STM707, STM708, STM813L
26/33 Doc ID 10520 Rev 9
Reset thresholds
V
RST
Reset threshold
(3)
STM705/707/813L 4.50 4.65 4.75 V
STM706/708 4.25 4.40 4.50 V
Reset threshold hysteresis 25 mV
t
rec
RST pulse width
Blank (see Ta bl e 9 ) 140 200 280
ms
A (see Ta bl e 9) 160 200 280
Push-button reset input
t
MLMH
(or t
MR
)
MR pulse width 150 ns
t
MLRL
(
t
MRD)
MR to RST output delay 250 ns
Watchdog timer (STM705/706/813L)
t
WD
Watchdog timeout period 4.5 V < V
CC
< 5.5 V 1.12 1.60 2.24 s
WDI pulse width 4.5 V < V
CC
< 5.5 V 50 ns
1. Valid for ambient operating temperature: T
A
= –40 to 85 °C; V
CC
= 4.75 V to 5.5 V for STM705/707/813L;
V
CC
= 4.5 V to 5.5 V for STM706/708 (except where noted).
2. V
CC
(min) = 1.0 V for T
A
= 0 °C to +85 °C.
3. For V
CC
falling.
Table 6. DC and AC characteristics
Sym Description Test condition
(1)
Min Typ Max Unit