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| MSP430F2618-EP Datasheet, PDF (43/92 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER | |||
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MSP430F2618- EP
MIXED SIGNAL MICROCONTROLLER
SLAS632 -- DECEMBER 2008
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
DCO with external resistor ROSC (see Note 1)
PARAMETER
TEST CONDITIONS
fDCO,ROSC
DCO output frequency with ROSC DCOR = 1, RSELx = 4, DCOx = 3, MODx = 0, TA = 25ï°C
Dt
Temperature drift
DCOR = 1, RSELx = 4, DCOx = 3, MODx = 0
DV
Drift with VCC
DCOR = 1, RSELx = 4, DCOx = 3, MODx = 0
NOTE 1: ROSC = 100 kï. Metal film resistor, type 0257. 0.6 watt with 1% tolerance and TK = ï±50ppm/ï°C.
VCC
2.2 V
3V
2.2 V/3 V
2.2 V/3 V
typical characteristics -- DCO with external resistor ROSC
10.00
10.00
TYP UNIT
1.8
MHz
1.95
ï±0.1 %/ï°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
ROSC -- External Resistor -- kOhm
Figure
19. DCO Frequency vs
VCC = 2.2 V, TA = 25ï°C
ROSC,
2.50
2.25
2.00
ROSC = 100k
1.75
1.50
1.25
1.00
0.75
ROSC = 270k
0.50
0.25
ROSC = 1M
0.00
--50.0 --25.0 0.0
25.0 50.0 75.0 100.0
TA -- Temperature -- ï°C
Figure 21. DCO Frequency vs Temperature,
VCC = 3.0 V
0.01
10.00
100.00
1000.00
10000.00
ROSC -- External Resistor -- kOhm
Figure
20. DCO Frequency vs
VCC = 3.0 V, TA = 25ï°C
ROSC,
2.50
2.25
2.00
ROSC = 100k
1.75
1.50
1.25
1.00
0.75
ROSC = 270k
0.50
0.25
ROSC = 1M
0.00
1.5
2.0
2.5
3.0
3.5
4.0
VCC -- Supply Voltage -- V
Figure
22.
DCO
TA
Frequency
= 25ï°C
vs
VCC,
ï· POST OFFICE BOX 655303 DALLAS, TEXAS 75265
43
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