Datasheet

MSP430F471x3, MSP430F471x6, MSP430F471x7
MIXED SIGNAL MICROCONTROLLER
SLAS626C -- OCTOBER 2008 -- REVISED MARCH 2011
39
POST OFFICE BOX 655303  DALLAS, TEXAS 75265
typical characteristics
V
CC(start)
V
CC
V
(B_IT--)
Brownout
Region
V
(SVSstart)
V
(SVS_IT--)
Software Sets VLD>0:
SVS is Active
t
d(SVSR)
undefined
V
hys(SVS_IT--)
0
1
t
d(BOR)
Brownout
0
1
t
d(SVSon)
t
d(BOR)
0
1
Set POR
Brown-
Out
Region
SVS Circuit is Active From VLD > to V
CC
<V(
B_IT--)
SVS
Out
V
hys(B_IT--)
Figure 11. SVS Reset (SVSR) vs Supply Voltage
0
0.5
1
1.5
2
V
CC
V
CC
1ns 1ns
V
CC(min)
t
pw
t
pw
-- Pulse Width -- s
V
CC(min)
-- V
3V
1 10 1000
t
f
t
r
t -- Pulse Width -- s
100
t
pw
3V
t
f=
t
r
Rectangular Drop
Triangular Drop
V
CC(min)
Figure 12. V
CC(min)
With a Square Voltage Drop and a Triangle Voltage Drop to Generate an SVS Signal