MSP430C11x1, MSP430F11x1A
MIXED SIGNAL MICROCONTROLLER
SLAS241H SEPTEMBER 1999 REVISED SEPTEMBER 2004
23
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:
faverage +
32
f(DCO)
f(DCO)1)
MOD
f(DCO))(32*MOD)
f(DCO)1)
DCO when using ROSC (see Note 1)
PARAMETER
TEST CONDITIONS
VCC
MIN
NOM
MAX
UNIT
fDCO, DCO output frequency
Rsel = 4, DCO = 3, MOD = 0, DCOR = 1,
2.2 V
1.8
±15%
MHz
fDCO, DCO output frequency
Rsel = 4, DCO = 3, MOD = 0, DCOR = 1,
TA = 25°C
3 V
1.95
±15%
MHz
Dt, Temperature drift
Rsel = 4, DCO = 3, MOD = 0, DCOR = 1
2.2 V/3 V
±0.1
%/
°C
Dv, Drift with VCC variation
Rsel = 4, DCO = 3, MOD = 0, DCOR = 1
2.2 V/3 V
10
%/V
NOTES:
1. ROSC = 100k. Metal film resistor, type 0257. 0.6 watt with 1% tolerance and TK = ±50ppm/°C.
crystal oscillator, LFXT1
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CXIN
Input capacitance
XTS=0; LF mode selected.
VCC = 2.2 V / 3 V
12
pF
CXIN
Input capacitance
XTS=1; XT1 mode selected.
VCC = 2.2 V / 3 V (see Note 1)
2
pF
CXOUT
Output capacitance
XTS=0; LF mode selected.
VCC = 2.2 V / 3 V
12
pF
CXOUT
Output capacitance
XTS=1; XT1 mode selected.
VCC = 2.2 V / 3 V (see Note 1)
2
pF
VIL
Input levels at XIN
VCC = 2.2 V/3 V (see Note 2)
VSS
0.2
×VCC
V
VIH
Input levels at XIN
VCC = 2.2 V/3 V (see Note 2)
0.8
×VCC
VCC
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.