MSP430C11X1_11 Datasheet, PDF (24/43 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430C11x1, MSP430F11x1A
MIXED SIGNAL MICROCONTROLLER
SLAS241I − SEPTEMBER 1999 − REVISED DECEMBER 2008
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 + _MOD
32 f_(DCO) f_(DCO)1)
f_(DCO))(32*MOD) f_(DCO)1)
DCO when using R_OSC (see Note 1)
PARAMETER
TEST CONDITIONS
V_CC
f_DCO, DCO output frequency R_sel = 4, DCO = 3, MOD = 0, DCOR = 1, T_A = 25°C
2.2 V
3V
MIN
TYP
1.8±15%
1.95±15%
D_t, Temperature drift
R_sel = 4, DCO = 3, MOD = 0, DCOR = 1
2.2 V/3 V
±0.1
D_v, Drift with V_CC variation
R_sel = 4, DCO = 3, MOD = 0, DCOR = 1
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.
crystal oscillator, LFXT1
MAX
UNIT
MHz
MHz
%/°C
%/V
PARAMETER
TEST CONDITIONS
MIN TYP
MAX
XTS=0, LF mode selected,
V_CC = 2.2 V / 3 V
12
C_XIN
Input capacitance
XTS=1, XT1 mode selected,
V_CC = 2.2 V / 3 V (see Note 1)
2
XTS=0, LF mode selected,
V_CC = 2.2 V / 3 V
12
C_XOUT
Output capacitance
XTS=1, XT1 mode selected,
V_CC = 2.2 V / 3 V (see Note 1)
2
V_IL
V_IH
NOTES:
Input levels at XIN
V_CC = 2.2 V/3 V (see Note 2)
V_SS
0.8×V_CC
0.2×V_CC
V_CC
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.
UNIT
pF
pF
V
24
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