MSP430X241X Datasheet, PDF (47/98 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430x241x, MSP430x261x
MIXED SIGNAL MICROCONTROLLER
SLAS541A -- JUNE 2007 -- REVISED OCTOBER 2007
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
DCO with external resistor R_OSC (see Note 1)
PARAMETER
TEST CONDITIONS
f_DCO,ROSC
DCO output frequency with R_OSC DCOR = 1, RSELx = 4, DCOx = 3, MODx = 0, T_A = 25°C
D_t
D_V
NOTE 1:
Temperature drift
DCOR = 1, RSELx = 4, DCOx = 3, MODx = 0
Drift with V_CC
DCOR = 1, RSELx = 4, DCOx = 3, MODx = 0
R_OSC = 100 kΩ. Metal film resistor, type 0257. 0.6 watt with 1% tolerance and T_K = ±50ppm/°C.
VCC
2.2 V
3V
2.2 V/3 V
2.2 V/3 V
typical characteristics -- DCO with external resistor R_OSC
10.00
10.00
TYP UNIT
1.8
MHz
1.95
±0.1 %/°C
10 %/V
1.00
1.00
0.10
0.10
RSELx = 4
RSELx = 4
0.01
10.00
100.00
1000.00
10000.00
R_OSC -- External Resistor -- kOhm
Figure
19. DCO Frequency vs
V_CC = 2.2 V, T_A = 25°C
R_OSC,
2.50
2.25
2.00
R_OSC = 100k
1.75
1.50
1.25
1.00
0.75
R_OSC = 270k
0.50
0.25
R_OSC = 1M
0.00
--50.0 --25.0 0.0 25.0 50.0 75.0 100.0
T_A -- Temperature -- °C
Figure 21. DCO Frequency vs Temperature,
V_CC = 3.0 V
0.01
10.00
100.00
1000.00
10000.00
R_OSC -- External Resistor -- kOhm
Figure
20. DCO Frequency vs
V_CC = 3.0 V, T_A = 25°C
R_OSC,
2.50
2.25
2.00
R_OSC = 100k
1.75
1.50
1.25
1.00
0.75
R_OSC = 270k
0.50
0.25
R_OSC = 1M
0.00
1.5
2.0
2.5
3.0
3.5
4.0
V_CC -- Supply Voltage -- V
Figure
22.
DCO
T_A
Frequency
= 25°C
vs
V_CC,
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47