DocID14290 Rev 4 13/19
STM6905 DC and AC parameters
18
V
HYST
Reset threshold
hysteresis
Referenced to V
RST1
/V
RST2
typical
0.5 %
t
RD
V
CC
to RST delay
V
CC
= (V
RST1
+ 100 mV) to
(V
RST1
– 100 mV)
20
µs
V2IN = (V
RST2
+ 75 mV) to
(V
RST2
– 75 mV)
20
t
REC
t
RP
RST time-out period
Option B
(5)
20 30 40
ms
Option C
(5)
80 120 180
Option E 140 210 280
Option F
(5)
280 420 560
Adjustable reset comparator input (V3IN, V4IN, V5IN)
V
RSTIN
V3IN, V4IN, V5IN input
threshold
589 600 611 mV
I
RSTIN
V3IN, V4IN, V5IN input
current
V3IN, V4IN, V5IN > 0.8 V –25 +25 nA
V3IN, V4IN, V5IN
hysteresis
3mV
t
RSTIND
V3IN, V4IN, V5IN to
RST output delay
VRSTIN to (VRSTIN – 30 mV) 22 µs
Manual (push-button) reset input
V
IL
MR input voltage
0.3 x V
CC
V
V
IH
0.7 x V
CC
t
MLMH
t
MR
MR minimum pulse
width
1µs
t
MLRL
t
MRD
MR to RST output delay 200
ns
MR
glitch immunity 100
MR
pull-up resistance 10 kΩ
1. Valid for ambient operating temperature: T
A
= –40 °C to +85 °C; V
CC
= 0.8 V to 5.5 V (except where noted).
2. 10 kΩ
(typ) internal pull-up resistor.
3. The leakage current measured on the RST
pin is tested with the reset de-asserted (output high impedance).
4. Other reset threshold voltages are offered. Minimum order quantities may apply. Contact local sales office for availability.
5. Other t
REC
time-out periods are offered. Minimum order quantities may apply. Contact local sales office for availability.
Table 4. DC and AC characteristics (continued)
Symbol
Alter-
native
Description Test condition
(1)
Min Typ Max Unit
