STM1403 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
STM1403 Datasheet PDF : 34 Pages
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DC and AC parameters
STM1403
Table 6. DC and AC characteristics (continued)
Alter-
Sym
native
Description
Test condition(1)
Min
VOHB
VOH battery backup (Vccsw)
Pull-up supply voltage
(open drain)
ISOURCE = 100 µA,
RST, SAL, BLD, PFO
0.8VBAT
Power-fail comparator
VPFI
PFI input threshold
PFI falling (VCC < 3.6 V) 1.212
PFI hysteresis
PFI Rising (VCC < 3.6 V)
tPFD
PFI to PFO propagation
delay
Battery switchover
Power- VBAT > VSW
Battery backup
down
VBAT < VSW
VSO
switchover voltage (6)(7)
Power-up
VBAT > VSW
VBAT < VSW
VSW
Hysteresis
Battery low voltage detect
VDET
On
M
2.25
Battery detect threshold
power-up
N
2.45
only
O
3.14
Voltage reference (option for STM1403A)(8)
VREF
IREF+
IREF–
Vn
Voltage reference
(see Section 2.1.9: VREF,
reference voltage output
(1.237, typ) on page 12)
Source current
Sink current
Output voltage noise
0°C to 85°C
–40° to 0°C
0°C to 85°C
–40° to 0°C
f = 100 Hz to 100 kH
1.212
1.200
15
10
10
Typ
1.237
10
2
VSW
VBAT
VSW
VBAT
2.4
40
2.30
2.50
3.20
1.237
1.237
25
15
13
10-100
Max Unit
V
3.6
V
1.262 V
20 mV
µs
V
V
V
V
V
mV
2.34 V
2.55 V
3.26 V
1.262 V
1.274 V
µA
µA
µA
µVrms
26/35
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