MSP430F2619S-HT Datasheet, PDF (35/90 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F2619S-HT
www.ti.com
SLAS697B – MARCH 2010 – REVISED JUNE 2011
POR/Brownout Reset (BOR) – Electrical Characteristics^{(1) (2)}
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
V_CC(start)
V_{(B_IT–)}
V_{hys(B_IT–)}
t_d(BOR)
t_(reset)
PARAMETER
See Figure 10
See Figure 10 through Figure 12
See Figure 10
See Figure 10
Pulse length needed at RST/NMI pin to
accepted reset internally
TEST CONDITIONS
V_CC
dV_CC/dt ≤ 3 V/s
dV_CC/dt ≤ 3 V/s
dV_CC/dt ≤ 3 V/s
2.2 V/3 V
MIN
TYP
0.7 ×
V_{(B_IT–)}
70
130
2
MAX
1.71
210
2000
UNIT
V
V
mV
μs
μs
(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 ≤ 1.8 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.
VCC
Vhys(B_IT−)
V(B_IT−)
V_CC(start)
1
0
t _d(BOR)
Figure 10. POR/Brownout Reset (BOR) vs Supply Voltage
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