MSP430FG42X0 Datasheet, PDF (24/65 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430FG42x0
MIXED SIGNAL MICROCONTROLLER
SLAS556A − JULY 2007 − REVISED AUGUST 2007
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
POR/brownout reset (BOR) (see Note 1)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
t_d(BOR)
V_CC(start)
V_{(B_IT−)}
V_{hys(B_IT−)}
t_(reset)
2000 μs
dV_CC/dt ≤ 3 V/s (see Figure 6)
0.7 × V_{(B_IT−)}
V
Brownout
(see Note 2)
dV_CC/dt ≤ 3 V/s (see Figure 6 through Figure 8)
dV_CC/dt ≤ 3 V/s (see Figure 6)
1.71
V
70
130
180 mV
Pulse length needed at RST/NMI pin to accepted reset internally,
V_CC = 2.2 V/3 V
2
μs
NOTES:
1. The current consumption of the brownout module is already included in the I_CC current consumption data. The voltage level
V_{(B_IT−)} + V_{hys(B_IT−)} is ≤ 1.8V.
2. During power up, the CPU begins code execution following a period of t_d(BOR) after V_CC = V_{(B_IT−)} + V_{hys(B_IT−)}. The default
FLL+ settings must not be changed until V_CC ≥ V_CC(min), where V_CC(min) is the minimum supply voltage for the desired
operating frequency. See the MSP430x4xx Family User’s Guide (SLAU056) for more information on the brownout.
typical characteristics
VCC
Vhys(B_IT−)
V(B_IT−)
V_CC(start)
1
0
t _d(BOR)
Figure 6. POR/Brownout Reset (BOR) vs Supply Voltage
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