MSP430F663x
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SLAS566C –JUNE 2010–REVISED AUGUST 2012
Internal Very-Low-Power Low-Frequency Oscillator (VLO)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
VLO frequency
VLO frequency temperature drift
TEST CONDITIONS
VCC
MIN
TYP
9.4
0.5
4
MAX UNIT
14 kHz
%/°C
fVLO
Measured at ACLK
1.8 V to 3.6 V
1.8 V to 3.6 V
1.8 V to 3.6 V
1.8 V to 3.6 V
6
dfVLO/dT
Measured at ACLK(1)
Measured at ACLK(2)
Measured at ACLK
dfVLO/dVCC VLO frequency supply voltage drift
Duty cycle
%/V
40
50
60
%
(1) Calculated using the box method: (MAX(-40 to 85°C) – MIN(-40 to 85°C)) / MIN(-40 to 85°C) / (85°C – (–40°C))
(2) Calculated using the box method: (MAX(1.8 to 3.6 V) – MIN(1.8 to 3.6 V)) / MIN(1.8 to 3.6 V) / (3.6 V – 1.8 V)
Internal Reference, Low-Frequency Oscillator (REFO)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
3
MAX UNIT
REFO oscillator current
consumption
IREFO
TA = 25°C
1.8 V to 3.6 V
µA
Hz
REFO frequency calibrated
Measured at ACLK
Full temperature range
TA = 25°C
1.8 V to 3.6 V
1.8 V to 3.6 V
3 V
32768
fREFO
±3.5
±1.5
%
%
REFO absolute tolerance
calibrated
dfREFO/dT
REFO frequency temperature drift Measured at ACLK(1)
1.8 V to 3.6 V
0.01
1.0
%/°C
REFO frequency supply voltage
Measured at ACLK(2)
drift
dfREFO/dVCC
1.8 V to 3.6 V
%/V
Duty cycle
Measured at ACLK
40%/60% duty cycle
1.8 V to 3.6 V
1.8 V to 3.6 V
40
50
25
60
%
tSTART
REFO startup time
µs
(1) Calculated using the box method: (MAX(-40 to 85°C) – MIN(-40 to 85°C)) / MIN(-40 to 85°C) / (85°C – (–40°C))
(2) Calculated using the box method: (MAX(1.8 to 3.6 V) – MIN(1.8 to 3.6 V)) / MIN(1.8 to 3.6 V) / (3.6 V – 1.8 V)
Copyright © 2010–2012, Texas Instruments Incorporated
57
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