Datasheet

V
CC
3 V
V
CC(drop)
t
pw
0
0.5
1
1.5
2
t
pw
− Pulse Width − µs
0.001 1 1000
t
f
t
r
t
pw
− Pulse Width − µs
t
f
= t
r
V = 3 V
Typical Conditions
cc
V
CC
(drop) − V
MSP430FW429, MSP430FW428
MSP430FW427, MSP430FW425, MSP430FW423
www.ti.com SLAS383E –OCTOBER 2003–REVISED DECEMBER 2013
Figure 12. V
CC(drop)
Level With a Triangle Voltage Drop to Generate a POR or BOR Signal
SVS (Supply Voltage Supervisor and Monitor)
(1)(2)
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
(SVSR)
dV
CC
/dt > 30 V/ms (see Figure 13) 5 150
µs
dV
CC
/dt ≤ 30 V/ms 2000
t
d(SVSon)
SVSon, switch from VLD = 0 to VLD ≉ 0, V
CC
= 3 V 20 150 µs
t
settle
VLD ≠ 0
(3)
12 µs
V
(SVSstart)
VLD ≠ 0, V
CC
/dt ≤ 3 V/s (see Figure 13) 1.55 1.7 V
VLD = 1 70 120 155 mV
V
CC
/dt ≤ 3 V/s (see Figure 13)
V
(SVS_IT-)
V
(SVS_IT-)
VLD = 2 to 14
V
hys(SVS_IT-)
x 0.004 × 0.08
V
CC
/dt ≤ 3 V/s (see Figure 13), external voltage
VLD = 15 4.4 10.4 mV
applied on A7
V
(SVS_IT-)
VLD = 1 1.8 1.9 2.05
VLD = 2 1.94 2.1 2.25
VLD = 3 2.05 2.2 2.37
VLD = 4 2.14 2.3 2.48
VLD = 5 2.24 2.4 2.6
VLD = 6 2.33 2.5 2.71
VLD = 7 2.46 2.65 2.86
V
CC
/dt ≤ 3 V/s (see Figure 13)
VLD = 8 2.58 2.8 3
V
VLD = 9 2.69 2.9 3.13
VLD = 10 2.83 3.05 3.29
VLD = 11 2.94 3.2 3.42
VLD = 12 3.11 3.35 3.61
(4)
VLD = 13 3.24 3.5 3.76
(4)
VLD = 14 3.43 3.7
(4)
3.99
(4)
V
CC
/dt ≤ 3 V/s (see Figure 13), external voltage
VLD = 15 1.1 1.2 1.3
applied on A7
I
CC(SVS)
(5)
VLD ≉ 0, V
CC
= 2.2 V, 3 V 10 15 µA
(1) The current consumption of the SVS module is not included in the I
CC
current consumption data.
(2) The SVS is not active at power up.
(3) t
settle
is the settling time that the comparator o/p needs to have a stable level after VLD is switched from VLD ≠ 0 to a different VLD
value between 2 and 15. The overdrive is assumed to be > 50 mV.
(4) The recommended operating voltage range is limited to 3.6 V.
(5) The current consumption of the SVS module is not included in the I
CC
current consumption data.
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