MSP430G2955
MSP430G2855
MSP430G2755
SLAS800 –MARCH 2013
www.ti.com
(1)
DCO With External Resistor ROSC
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX UNIT
DCOR = 1,
fDCO,ROSC
DCO output frequency with ROSC
RSELx = 4, DCOx = 3, MODx = 0,
TA = 25°C
3 V
1.95
MHz
DCOR = 1,
RSELx = 4, DCOx = 3, MODx = 0
DT
DV
Temperature drift
Drift with VCC
3 V
3 V
±0.1
10
%/°C
%/V
DCOR = 1,
RSELx = 4, DCOx = 3, MODx = 0
(1) ROSC = 100 kΩ. Metal film resistor, type 0257, 0.6 W with 1% tolerance and TK = ±50 ppm/°C.
Typical Characteristics - DCO With External Resistor ROSC
DCO FREQUENCY
DCO FREQUENCY
vs
ROSC
vs
ROSC
VCC = 2.2 V, TA = 25°C
VCC = 3 V, TA = 25°C
10.00
1.00
0.10
0.01
10.00
1.00
0.10
0.01
RSELx = 4
RSELx = 4
10.00
100.00
1000.00
10000.00
10.00
100.00
1000.00
10000.00
R
OSC
− External Resistor − kW
R
OSC
− External Resistor − kW
Figure 16.
Figure 17.
DCO FREQUENCY
vs
TEMPERATURE
VCC = 3 V
DCO FREQUENCY
vs
SUPPLY VOLTAGE
TA = 25°C
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
R
= 100k
OSC
R
= 100k
OSC
R
R
= 270k
= 1M
R
= 270k
= 1M
OSC
OSC
R
OSC
OSC
−50.0 −25.0
0.0
25.0
50.0
75.0 100.0
2.0
2.5
3.0
3.5
4.0
T
A
− Temperature −
C
V
CC
− Supply Voltage − V
Figure 18.
Figure 19.
30
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