MSP430F2618-EP Datasheet, PDF (33/92 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F2618- EP
MIXED SIGNAL MICROCONTROLLER
SLAS632 -- DECEMBER 2008
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
POR/brownout reset (BOR) (see Notes 1 and 2)
PARAMETER
TEST CONDITIONS
V_CC
MIN TYP MAX UNIT
V_CC(start) operating voltage
dV_CC/dt ± 3 V/s
0.7 ¢ V_{(B_IT--)}
V
V_{(B_IT--)}
negative going V_CC reset threshold voltage
dV_CC/dt ± 3 V/s
1.71 V
V_{hys(B_IT--)} V_CC reset threshold hysteresis
dV_CC/dt ± 3 V/s
70 130 210 mV
t_d(BOR)
BOR reset release delay time
2000 s
t_reset
Pulse length at RST/NMI pin to accept a reset
2.2 V / 3 V
2
s
NOTES: 1. The current consumption of the brownout module is included in the I_CC current consumption data. The voltage level
V_{(B_IT--)} + V_{hys(B_IT--)} is  1.8 V.
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 DCO
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.
V_CC
V_{(B_IT-)}
V_CC(Start)
V_{hys(B_IT-)}
1
0
t_d(BOR)
Figure 9. POR/Brownout Reset (BOR) vs Supply Voltage
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