MSP430F21X2_17 Datasheet, PDF (31/80 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F21x2
www.ti.com
SLAS578J – NOVEMBER 2007 – REVISED JANUARY 2012
Wake-Up From Lower-Power Modes (LPM3/4)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
BCSCTL1 = CALBC1_1MHZ,
DCOCTL = CALDCO_1MHZ
V_CC
MIN
TYP MAX UNIT
2
t_DCO,LPM3/4
DCO clock wake-up time
from LPM3/4⁽¹⁾
BCSCTL1 = CALBC1_8MHZ,
DCOCTL = CALDCO_8MHZ
BCSCTL1 = CALBC1_12MHZ,
DCOCTL = CALDCO_12MHZ
2.2 V/3 V
1.5
µs
1
BCSCTL1 = CALBC1_16MHZ,
DCOCTL = CALDCO_16MHZ
3V
1
t_CPU,LPM3/4
CPU wake-up time from
LPM3/4 ⁽²⁾
1 / f_MCLK +
t_Clock,LPM3/4
(1) The DCO clock wake-up time is measured from the edge of an external wake-up signal (for example, a port interrupt) to the first clock
edge observable externally on a clock pin (MCLK or SMCLK).
(2) Parameter applicable only if DCOCLK is used for MCLK.
Typical Characteristics - DCO Clock Wake-Up Time From LPM3/4
CLOCK WAKE-UP TIME FROM LPM3
vs
DCO FREQUENCY
10.00
RSELx = 0 to 11
1.00
RSELx = 12 to 15
0.10
0.10
1.00
10.00
DCO Frequency − MHz
Figure 13.
DCO With External Resistor R_OSC(1)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
f_DCO,ROSC
D_T
PARAMETER
DCO output frequency with R_OSC
Temperature drift
TEST CONDITIONS
DCOR = 1,
RSELx = 4, DCOx = 3, MODx = 0,
T_A = 25°C
DCOR = 1,
RSELx = 4, DCOx = 3, MODx = 0
V_CC
2.2 V
3V
2.2 V/3 V
MIN TYP
1.8
1.95
±0.1
D_V
Drift with V_CC
DCOR = 1,
RSELx = 4, DCOx = 3, MODx = 0
2.2 V/3 V
10
(1) R_OSC = 100 kΩ. Metal film resistor, type 0257, 0.6 W with 1% tolerance and T_K = ±50 ppm/°C.
MAX UNIT
MHz
%/°C
%/V
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