Datasheet

MSP430F6438, MSP430F6436
MSP430F6435, MSP430F6433
SLAS720C –AUGUST 2010–REVISED AUGUST 2013 www.ti.com
Internal Very-Low-Power Low-Frequency Oscillator (VLO)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
f
VLO
VLO frequency Measured at ACLK 1.8 V to 3.6 V 6 9.4 14 kHz
df
VLO
/d
T
VLO frequency temperature drift Measured at ACLK
(1)
1.8 V to 3.6 V 0.5 %/°C
df
VLO
/dV
CC
VLO frequency supply voltage drift Measured at ACLK
(2)
1.8 V to 3.6 V 4 %/V
Duty cycle Measured at ACLK 1.8 V to 3.6 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 V
CC
MIN TYP MAX UNIT
REFO oscillator current
I
REFO
T
A
= 25°C 1.8 V to 3.6 V 3 µA
consumption
REFO frequency calibrated Measured at ACLK 1.8 V to 3.6 V 32768 Hz
f
REFO
Full temperature range 1.8 V to 3.6 V ±3.5 %
REFO absolute tolerance
calibrated
T
A
= 25°C 3 V ±1.5 %
df
REFO
/d
T
REFO frequency temperature drift Measured at ACLK
(1)
1.8 V to 3.6 V 0.01 %/°C
REFO frequency supply voltage
df
REFO
/dV
CC
Measured at ACLK
(2)
1.8 V to 3.6 V 1.0 %/V
drift
Duty cycle Measured at ACLK 1.8 V to 3.6 V 40 50 60 %
t
START
REFO startup time 40%/60% duty cycle 1.8 V to 3.6 V 25 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)
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