MSP430x22x2, MSP430x22x4
MIXED SIGNAL MICROCONTROLLER
SLAS504A 鈭?JULY 2006 鈭?REVISED DECEMBER 2006
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
fDCO,ROSC
Dt
DV
DCO output frequency
with ROSC
Temperature drift
Drift with VCC
TEST CONDITIONS
DCOR = 1,
RSELx = 4, DCOx = 3, MODx = 0,
TA = 25擄C
DCOR = 1,
RSELx = 4, DCOx = 3, MODx = 0
DCOR = 1,
RSELx = 4, DCOx = 3, MODx = 0
VCC
2.2 V
3V
2.2 V/3 V
2.2 V/3 V
MIN
TYP
1.8
MHz
1.95
鹵0.1
10
%/擄C
%/V
MAX
UNIT
NOTES: 1. ROSC = 100k鈩? Metal film resistor, type 0257. 0.6 watt with 1% tolerance and TK =
鹵50ppm/擄C.
typical characteristics 鈭?DCO with external resistor R
OSC
10.00
10.00
DCO Frequency 鈭?MHz
1.00
DCO Frequency 鈭?MHz
1.00
0.10
RSELx = 4
0.10
RSELx = 4
0.01
10.00
100.00
1000.00
10000.00
0.01
10.00
100.00
1000.00
10000.00
ROSC 鈭?External Resistor 鈭?kOhm
ROSC 鈭?External Resistor 鈭?kOhm
Figure 14. DCO Frequency vs R
OSC
,
VCC = 2.2 V, T
A
= 255C
2.50
2.25
2.00
1.75
DCO Frequency 鈭?MHz
1.50
1.25
1.00
0.75
0.50
0.25
0.00
鈭?0.0
鈭?5.0
0.0
25.0
ROSC = 1M
ROSC = 270k
DCO Frequency 鈭?MHz
ROSC = 100k
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
100.0
Figure 15. DCO Frequency vs R
OSC
,
VCC = 3.0 V, T
A
= 255C
ROSC = 100k
ROSC = 270k
ROSC = 1M
50.0
75.0
0.00
2.0
2.5
3.0
3.5
4.0
TA 鈭?Temperature 鈭?/div>
5C
VCC 鈭?Supply Voltage 鈭?V
Figure 16. DCO Frequency vs Temperature,
VCC = 3.0 V
Figure 17. DCO Frequency vs VCC,
T
A
= 255C
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
37
                         
                        
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