Datasheet

0.01
0.10
1.00
10.00
10.00 100.00 1000.00 10000.00
R
OSC
− External Resistor − kW
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 − kW
DCO Frequency − MHz
RSELx = 4
MSP430F261x
MSP430F241x
www.ti.com SLAS541K –JUNE 2007–REVISED NOVEMBER 2012
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
TYP 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 kΩ. Metal film resistor, type 0257, 0.6 W with 1% tolerance and T
K
= ±50 ppm/°C.
Typical Characteristics - DCO With External Resistor R
OSC
DCO FREQUENCY DCO FREQUENCY
vs vs
R
OSC
R
OSC
V
CC
= 2.2 V, T
A
= 25°C V
CC
= 3 V, T
A
= 25°C
Figure 19. Figure 20.
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