MSP430G2955
MSP430G2855
MSP430G2755
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SLAS800 –MARCH 2013
POR and BOR(1)(2)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
See Figure 12
See Figure 12 through Figure 14
Vhys(B_IT-) See Figure 12
TEST CONDITIONS
dVCC/dt ≤ 3 V/s
VCC
MIN
TYP
MAX UNIT
VCC(start)
V(B_IT-)
0.7 × V(B_IT-)
1.35
V
V
dVCC/dt ≤ 3 V/s
dVCC/dt ≤ 3 V/s
140
mV
µs
td(BOR)
See Figure 12
2000
Pulse duration needed at RST/NMI pin
to accepted reset internally
t(reset)
2.2 V
2
µs
(1) The current consumption of the brownout module is already included in the ICC current consumption data. The voltage level V(B_IT-)
+
Vhys(B_IT-)is ≤ 1.8 V.
(2) During power up, the CPU begins code execution following a period of td(BOR) after VCC = V(B_IT-) + Vhys(B_IT-). The default DCO settings
must not be changed until VCC ≥ VCC(min), where VCC(min) is the minimum supply voltage for the desired operating frequency.
V
CC
V
hys(B_IT−)
V
(B_IT−)
V
CC(start)
1
0
t
d(BOR)
Figure 12. POR and BOR vs Supply Voltage
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