Datasheet

MSP430F23x0
MIXED SIGNAL MICROCONTROLLER
SLAS518A -- AUGUST 2006 -- REVISED MAY 2007
30
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
,electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
wake-up from lower power modes (LPM3/4)
PARAMETER TEST CONDITIONS VCC MIN TYP MAX UNIT
BCSCTL1= CALBC1_1MHZ;
DCOCTL = CALDCO_1MHZ
2.2 V/3 V 2
t
DCO clock wake--up time from
L
P
M
3
/
4
BCSCTL1= CALBC1_8MHZ;
DCOCTL = CALDCO_8MHZ
2.2 V/3 V 1.5
s
t
DCO,LPM3/4
LPM3
/
4
(see Note 1)
BCSCTL1= CALBC1_12MHZ;
DCOCTL = CALDCO_12MHZ
2.2 V/3 V 1
μs
BCSCTL1= CALBC1_16MHZ;
DCOCTL = CALDCO_16MHZ
3V 1
t
CPU,LPM3/4
CPUwake--uptimefromLPM3/4
(see Note 2)
1/f
MCLK
+
t
Clock,LPM3/4
NOTES: 1. The DCO clock wake--up time is measured from the edge of an external wake--up signal (e.g. 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
DCO Frequency -- MHz
0.10
1.00
10.00
0.10 1.00 10.00
DCO Wake Time -- us
Figure 12. Clock wake--up time from LPM3 vs DCO frequency
RSELx = 0...11
RSELx = 12...15