MSP430G2231-EP_16 Datasheet, PDF (23/46 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430G2231-EP
www.ti.com
SLAS862 – JUNE 2012
Calibrated DCO Frequencies – Tolerance
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
1-MHz tolerance over
temperature ⁽¹⁾
TEST CONDITIONS
T_A
V_CC
BCSCTL1= CALBC1_1MHz,
DCOCTL = CALDCO_1MHz,
-40°C to 105°C
3V
calibrated at 30°C and 3 V
MIN TYP
-3 ±0.5
1-MHz tolerance over V_CC
BCSCTL1= CALBC1_1MHz,
DCOCTL = CALDCO_1MHz,
calibrated at 30°C and 3 V
30°C
1.8 V to 3.6 V
-3
±2
1-MHz tolerance overall
BCSCTL1= CALBC1_1MHz,
DCOCTL = CALDCO_1MHz,
calibrated at 30°C and 3 V
-40°C to 105°C 1.8 V to 3.6 V
-6
±3
(1) This is the frequency change from the measured frequency at 30°C over temperature.
MAX
+3
+3
+6
UNIT
%
%
%
Wake-Up From Lower-Power Modes (LPM3/4) – Electrical Characteristics
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
t_DCO,LPM3/4
PARAMETER
DCO clock wake-up time from
LPM3/4 ⁽¹⁾
TEST CONDITIONS
BCSCTL1= CALBC1_1MHz,
DCOCTL = CALDCO_1MHz
V_CC
MIN
TYP
3V
1.5
t_CPU,LPM3/4
CPU wake-up time from LPM3/4⁽²⁾
1/f_MCLK +
t_Clock,LPM3/4
MAX UNIT
µs
(1) The DCO clock wake-up time is measured from the edge of an external wake-up signal (for example, 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
10.00
RSELx = 0...11
1.00
RSELx = 12...15
0.10
0.10
1.00
10.00
DCO Frequency − MHz
Figure 14. DCO Wake-Up Time From LPM3 vs DCO Frequency
Copyright © 2012, Texas Instruments Incorporated
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