MSP430F23X_14 Datasheet, PDF (38/93 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F23x
MSP430F24x(1)
MSP430F2410
SLAS547I – JUNE 2007 – REVISED DECEMBER 2012
www.ti.com
POR and Brownout Reset (BOR)⁽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
Operating voltage
Negative going V_CC reset threshold voltage
V_CC reset threshold hysteresis
BOR reset release delay time
Pulse duration needed at RST/NMI pin to
accepted reset internally
TEST CONDITIONS
dV_CC /dt ≤ 3 V/s
dV_CC /dt ≤ 3 V/s
dV_CC /dt ≤ 3 V/s
V_CC
2.2 V, 3 V
MIN TYP MAX UNIT
0.7 × V_{(B_IT-)} V
1.71 V
70 130 210 mV
2000 µs
2
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(s t ar t )}
1
0
t _d(BOR)
Figure 9. POR/Brownout Reset (BOR) vs Supply Voltage
38
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