Texas Instruments MSP430G2744DA, Manual

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0.00
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
−50.0 −25.0 0.0 25.0 50.0 75.0 100.0
T
A
− Temperature − °C
DCO Frequency
−
MHz
R
OSC
= 100k
R
OSC
= 270k
R
OSC
= 1M
0.00
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.0 2.5 3.0 3.5 4.0
V
CC
− Supply Voltage − V
DCO Frequency
−
MHz
R
OSC
= 100k
R
OSC
= 270k
R
OSC
= 1M
0.01
0.10
1.00
10.00
10.00 100.00 1000.00 10000.00
R
OSC
− External Resistor − k
W
DCO Frequency
−
MHz
RSELx = 4
0.01
0.10
1.00
10.00
10.00 100.00 1000.00 10000.00
R
OSC
− External Resistor − k
W
DCO Frequency
−
MHz
RSELx = 4
MSP430G2744, MSP430G2544, MSP430G2444
SLAS892C – MARCH 2013 – REVISED SEPTEMBER 2014 www.ti.com
5.18 DCO With External Resistor R
OSC
(1)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
DCOR = 1, 2.2 V 1.8
f
DCO,ROSC
DCO output frequency with R
OSC
RSELx = 4, DCOx = 3, MODx = 0, MHz
3 V 1.95
T
A
= 25°C
DCOR = 1,
D
T
Temperature drift 2.2 V, 3 V ±0.1 %/°C
RSELx = 4, DCOx = 3, MODx = 0
DCOR = 1,
D
V
Drift with V
CC
2.2 V, 3 V 10 %/V
RSELx = 4, DCOx = 3, MODx = 0
(1) R
OSC
= 100 k Ω . Metal film resistor, type 0257, 0.6 W with 1% tolerance and T
K
= ±50 ppm/°C.
5.19 Typical Characteristics - DCO With External Resistor R
OSC
V
CC
= 2.2 V T
A
= 25°C V
CC
= 3 V T
A
= 25°C
Figure 5-12. DCO Frequency vs R
OSC
Figure 5-13. DCO Frequency vs R
OSC
V
CC
= 3 V T
A
= 25°C
Figure 5-14. DCO Frequency vs Temperature Figure 5-15. DCO Frequency vs Supply Voltage
24 Specifications
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