Datasheet

MSP430F5172, MSP430F5152, MSP430F5132
MSP430F5171, MSP430F5151, MSP430F5131
www.ti.com SLAS619K –AUGUST 2010–REVISED JANUARY 2014
Crystal Oscillator, XT1, Low-Frequency Mode
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
f
OSC
= 32768 Hz, XTS = 0,
XT1BYPASS = 0, XT1DRIVEx = 1, 0.075
T
A
= 25°C
Differential XT1 oscillator crystal f
OSC
= 32768 Hz, XTS = 0,
I
DVCC.LF
current consumption from lowest XT1BYPASS = 0, XT1DRIVEx = 2, 3 V 0.170 µA
drive setting, LF mode T
A
= 25°C
f
OSC
= 32768 Hz, XTS = 0,
XT1BYPASS = 0, XT1DRIVEx = 3, 0.290
T
A
= 25°C
XT1 oscillator crystal frequency,
f
XT1,LF0
XTS = 0, XT1BYPASS = 0 32768 Hz
LF mode
XT1 oscillator logic-level square-
f
XT1,LF,SW
XTS = 0, XT1BYPASS = 1 10 32.768 50 kHz
wave input frequency, LF mode
XTS = 0,
XT1BYPASS = 0, XT1DRIVEx = 0, 210
f
XT1,LF
= 32768 Hz, C
L,eff
= 6 pF
Oscillation allowance for
OA
LF
kΩ
LF crystals
XTS = 0,
XT1BYPASS = 0, XT1DRIVEx = 1, 300
f
XT1,LF
= 32768 Hz, C
L,eff
= 12 pF
XTS = 0, XCAPx = 0 2
XTS = 0, XCAPx = 1 5.5
Integrated effective load
C
L,eff
pF
capacitance, LF mode
XTS = 0, XCAPx = 2 8.5
XTS = 0, XCAPx = 3 12.0
XTS = 0, Measured at ACLK,
Duty cycle, LF mode 30 70 %
f
XT1,LF
= 32768 Hz
Oscillator fault frequency,
f
Fault,LF
XTS = 0 10 10000 Hz
LF mode
f
OSC
= 32768 Hz, XTS = 0,
XT1BYPASS = 0, XT1DRIVEx = 0, 1000
T
A
= 25°C, C
L,eff
= 12 pF
t
START,LF
Startup time, LF mode 3 V ms
f
OSC
= 32768 Hz, XTS = 0,
XT1BYPASS = 0, XT1DRIVEx = 3, 500
T
A
= 25°C, C
L,eff
= 12 pF
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