MSP430x23x, MSP430x24x(1), MSP430x2410
MIXED SIGNAL MICROCONTROLLER
SLAS547A -- JUNE 2007 -- REVISED NOVEMBER 2007
typical characteristics
AVCC
V(SVS_IT-
-)
V(SVSstart)
V(B_IT-
-)
VCC(start)
Brownout
Region
Brown-
out
Region
Software sets VLD >0:
SVS is active
Vhys(SVS_IT-
-)
V
hys(B_IT--)
Brownout
1
0
SVS out
1
0
Set POR
1
0
td(BOR)
SVS Circuit is Active From VLD > to V
CC
< V(
B_IT--)
t d(BOR)
td(SVSon)
undefined
td(SVSR)
Figure 12. SVS Reset (SVSR) vs Supply Voltage
VCC
3V
t pw
2
Rectangular Drop
1.5
VCC(min) - V
-
Triangular Drop
1
1 ns
0.5
VCC
3V
t pw
1 ns
VCC(min)
0
1
10
100
1000
VCC(min)
t
f
= t
r
t
f
t
r
-
-
t
pw
- Pulse Width -
渭s
t - Pulse Width -
渭s
-
-
Figure 13. V
CC(min)
: Square Voltage Drop and Triangle Voltage Drop to Generate an SVS Signal (VLD = 1)
42
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