Texas Instruments EVM430-F6736 - MSP430F6736 EVM for Metering EVM430-F6736 EVM430-F6736 Datenbogen
Produktcode
EVM430-F6736
MSP430F673x
MSP430F672x
MSP430F672x
SLAS731C – DECEMBER 2011 – REVISED FEBRUARY 2013
Crystal Oscillator, XT1, Low-Frequency Mode
(continued)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V
CC
MIN
TYP
MAX
UNIT
XTS = 0, Measured at ACLK,
Duty cycle
LF mode
30
70
%
f
XT1,LF
= 32768 Hz
Oscillator fault frequency,
f
Fault,LF
XTS = 0
(8)
10
10000
Hz
LF mode
(7)
f
OSC
= 32768 Hz, XTS = 0, XT1BYPASS = 0,
1000
XT1DRIVEx = 0, T
A
= 25°C, C
L,eff
= 6 pF
t
START,LF
Startup time, LF mode
3.0 V
ms
f
OSC
= 32768 Hz, XTS = 0, XT1BYPASS = 0,
500
XT1DRIVEx = 3, T
A
= 25°C, C
L,eff
= 12 pF
(7)
Frequencies below the MIN specification set the fault flag. Frequencies above the MAX specification do not set the fault flag.
Frequencies in between might set the flag.
Frequencies in between might set the flag.
(8)
Measured with logic-level input frequency but also applies to operation with crystals.
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
15
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
30
70
%
(1)
Calculated using the box method: (MAX(-40 to 85°C) – MIN(-40 to 85°C)) / MIN(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
df
REFO
/dV
CC
REFO frequency supply voltage drift Measured at ACLK
(2)
1.8 V to 3.6 V
1.0
%/V
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(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)
56
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