MSP430X22X2 Datasheet, PDF (37/87 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430x22x2, MSP430x22x4
MIXED SIGNAL MICROCONTROLLER
SLAS504B − JULY 2006 − REVISED JULY 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
VCC
MIN TYP
f_DCO,ROSC
D_t
DCO output frequency
with R_OSC
Temperature drift
DCOR = 1,
RSELx = 4, DCOx = 3, MODx = 0,
T_A = 25°C
DCOR = 1,
RSELx = 4, DCOx = 3, MODx = 0
2.2 V
3V
2.2 V/3 V
1.8
1.95
±0.1
D_V
Drift with V_CC
DCOR = 1,
RSELx = 4, DCOx = 3, MODx = 0
2.2 V/3 V
10
NOTES: 1. R_OSC = 100kΩ. Metal film resistor, type 0257. 0.6 watt with 1% tolerance and T_K = ±50ppm/°C.
typical characteristics − DCO with external resistor R_OSC
10.00
10.00
MAX UNIT
MHz
%/°C
%/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 − kW
Figure 14. DCO Frequency vs R_OSC,
V_CC = 2.2 V, T_A = 255C
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 − 5C
Figure 16. DCO Frequency vs Temperature,
V_CC = 3.0 V
0.01
10.00
100.00
1000.00
10000.00
R_OSC − External Resistor − kW
Figure 15. DCO Frequency vs R_OSC,
V_CC = 3.0 V, T_A = 255C
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
2.0
2.5
3.0
3.5
4.0
V_CC − Supply Voltage − V
Figure 17. DCO Frequency vs V_CC,
T_A = 255C
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