Datasheet

DC and AC parameters STM690, STM704, STM795, STM802, STM804, STM805, STM806
34/42 Doc ID 10519 Rev 9
I
SC
PFO
output short to GND
current
V
CC
= 3.6 V, PFO = 0 V 0.1 0.75 2.0 mA
Battery switchover
V
SO
Battery backup switchover
voltage
(8)(9)
Power-down
V
BAT
> V
SW
V
SW
V
V
BAT
< V
SW
V
BAT
V
Power-up
V
BAT
> V
SW
V
SW
V
V
BAT
< V
SW
V
BAT
V
V
SW
2.4 V
Hysteresis 40 mV
Reset thresholds
V
RST
(10)
Reset threshold
STM690T/
704T/795T/ 805T
V
CC
falling 3.00 3.075 3.15 V
V
CC
rising 3.00 3.085 3.17 V
STM802T/
804T/806T
V
CC
falling 3.00 3.075 3.12 V
V
CC
rising 3.00 3.085 3.14 V
STM690S/
704S/795S/ 805S
V
CC
falling 2.85 2.925 3.00 V
V
CC
rising 2.85 2.935 3.02 V
STM802S/
804S/806S
V
CC
falling 2.88 2.925 3.00 V
V
CC
rising 2.88 2.935 3.02 V
STM690R/
704R/795R/ 805R
V
CC
falling 2.55 2.625 2.70 V
V
CC
rising 2.55 2.635 2.72 V
STM802R/
804R/806R
V
CC
falling 2.59 2.625 2.70 V
V
CC
rising 2.59 2.635 2.72 V
t
rec
RST pulse width V
CC
< 3.6 V 140 200 280 ms
Push-button reset input (STM704/806)
t
MLMH
t
MR
MR pulse width 100 20 ns
t
MLRL
t
MRD
MR to RST output delay 60 500 ns
Watchdog timer (NOT available on STM704/795/806)
t
WD
Watchdog timeout period V
RST
(max) < V
CC
< 3.6 V 1.12 1.60 2.24 s
WDI pulse width V
RST
(max) < V
CC
< 3.6 V 100 20 ns
Chip enable gating (STM795 only)
E to E
CON
resistance V
CC
= V
RST
(max) 46 Ω
Table 7. DC and AC characteristics (continued)
Sym
Alter-
native
Description Test condition
(1)
Min Typ Max Unit