Datasheet

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SLAS361D − JANUARY 2002 − REVISED AUGUST 2004
21
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 (LPMx)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
(LPM0)
V
CC
= 2.2 V/3 V 100
t
(LPM2)
V
CC
= 2.2 V/3 V 100
ns
f
(MCLK)
= 1 MHz, V
CC
= 2.2 V/3 V 6
t
(LPM3)
f
(MCLK)
= 2 MHz, V
CC
= 2.2 V/3 V 6
µs
(LPM3)
Delay time (see Note 1)
f
(MCLK)
= 3 MHz, V
CC
= 2.2 V/3 V 6
µ
f
(MCLK)
= 1 MHz, V
CC
= 2.2 V/3 V 6
t
(LPM4)
f
(MCLK)
= 2 MHz, V
CC
= 2.2 V/3 V 6
µs
(LPM4)
f
(MCLK)
= 3 MHz, V
CC
= 2.2 V/3 V 6
µ
NOTES: 1. Parameter applicable only if DCOCLK is used for MCLK.
USART (see Note 1)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
CC
= 2.2 V 200 430 800
t
(
τ
)
USART: deglitch time
V
CC
= 3 V 150 280 500
ns
NOTES: 1. The signal applied to the USART receive signal/terminal (URXD) should meet the timing requirements of t
(
τ
)
to ensure that the URXS
flip-flop is set. The URXS flip-flop is set with negative pulses meeting the minimum-timing condition of t
(
τ
)
. The operating conditions
to set the flag must be met independently from this timing constraint. The deglitch circuitry is active only on negative transitions on
the URXD line.
RAM
PARAMETER MIN NOM MAX UNIT
V
(RAMh)
CPU halted (see Note 1) 1.6 V
NOTES: 1. This parameter defines the minimum supply voltage V
CC
when the data in the program memory RAM remains unchanged. No
program execution should happen during this supply voltage condition.
POR brownout, reset (see Notes 1 and 2)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
d(BOR)
2000 µs
V
CC(start)
dV
CC
/dt ≤ 3 V/s 0.7 × V
(B_IT−)
V
V
(B_IT−)
dV
CC
/dt ≤ 3 V/s 1.71 V
V
hys(B_IT−)
Brownout
dV
CC
/dt ≤ 3 V/s 70 130 180 mV
t
(reset)
Pulse length needed at RST/NMI pin to accepted reset internally,
V
CC
= 2.2 V/3 V
2 µs
NOTES: 1. The current consumption of the brown-out module is already included in the I
CC
current consumption data.
2. During power up, the CPU begins code execution following a period of t
d(BOR)
after V
CC
= V
(B_IT−)
+ V
hys(B_IT−)
.
The default DCO settings must not be changed until V
CC
≥ V
CC(min)
, where V
CC(min)
is the minimum supply voltage for the
desired operating frequency. See the MSP430x1xx Family User’s Guide for more information on the brownout circuit.