Datasheet

MSP430C11x1, MSP430F11x1A
MIXED SIGNAL MICROCONTROLLER
SLAS241I − SEPTEMBER 1999 − REVISED DECEMBER 2008
24
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
main DCO characteristics
D Individual devices have a minimum and maximum operation frequency. The specified parameters for
f
(
DCOx0)
to f
(
DCOx7)
are valid for all devices.
D All ranges selected by Rsel(n) overlap with Rsel(n+1): Rsel0 overlaps Rsel1, ... Rsel6 overlaps Rsel7.
D DCO control bits DCO0, DCO1, and DCO2 have a step size as defined by parameter S
DCO
.
D Modulation control bits MOD0 to MOD4 select how often f
(
DCO+1)
is used within the period of 32 DCOCLK
cycles. The frequency f
(DCO)
is used for the remaining cycles. The frequency is an average equal to:
f
average
+
32 f
(DCO)
f
(DCO)1)
MOD f
(DCO)
)(32*MOD) f
(DCO)1)
DCO when using R
OSC
(see Note 1)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
f
CO
DCO output frequency
R =4 DCO=3 MOD=0 DCOR=1 T =25
°
C
2.2 V 1.8±15% MHz
f
DCO
, DCO output frequency R
sel
= 4, DCO = 3, MOD = 0, DCOR = 1, T
A
= 25°C
3 V 1.95±15% MHz
D
t
, Temperature drift R
sel
= 4, DCO = 3, MOD = 0, DCOR = 1 2.2 V/3 V ±0.1 %/°C
D
v
, Drift with V
CC
variation R
sel
= 4, DCO = 3, MOD = 0, DCOR = 1 2.2 V/3 V 10 %/V
NOTES: 1. R
OSC
= 100kΩ. Metal film resistor, type 0257. 0.6 watt with 1% tolerance and T
K
= ±50ppm/°C.
crystal oscillator, LFXT1
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
C
Input capacitance
XTS=0, LF mode selected,
V
CC
= 2.2 V / 3 V
12
pF
C
XIN
Input capacitance
XTS=1, XT1 mode selected,
V
CC
= 2.2 V / 3 V (see Note 1)
2
pF
C
Output capacitance
XTS=0, LF mode selected,
V
CC
= 2.2 V / 3 V
12
pF
C
XOUT
Output capacitance
XTS=1, XT1 mode selected,
V
CC
= 2.2 V / 3 V (see Note 1)
2
pF
V
IL
Input levels at XIN
V = 2 2 V/3 V (see Note 2)
V
SS
0.2×V
CC
V
V
IH
Input levels at XIN V
CC
= 2.2 V/3 V (see Note 2)
0.8×V
CC
V
CC
V
NOTES: 1. Requires external capacitors at both terminals. Values are specified by crystal manufacturers.
2. Applies only when using an external logic-level clock source. Not applicable when using a crystal or resonator.