Datasheet

MSP430FE42x2
MIXED SIGNAL MICROCONTROLLER
SLAS616 − JULY 2008
21
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
wake-up LPM3
PARAMETER TEST CONDITIONS MIN MAX UNIT
f = 1 MHz 6
t
d
(
LPM3
)
Delay time
f = 2 MHz
V
CC
= 3 V
6
µs
t
d(LPM3)
Delay
time
f = 3 MHz
V
CC
3
V
6
µs
RAM (see Note 1)
PARAMETER TEST CONDITIONS MIN MAX UNIT
VRAMh CPU halted (see Note 1) 1.6 V
NOTE 1: This parameter defines the minimum supply voltage when the data in the program memory RAM remain unchanged. No program
execution should take place during this supply voltage condition.
LCD
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
(33)
Voltage at R33 2.5 V
CC
+ 0.2
V
(23)
Analog voltage
Voltage at R23
V 3V
(V
33
−V
03
) ×
2/3 + V
03
V
V
(13)
Analog voltage
Voltage at R13
V
CC
= 3 V
(V
(33)
−V
(03)
) ×
1/3 + V
(03)
V
V
(33) −
V
(03)
Voltage at R33/R03 2.5 V
CC
+0.2
I
(R03)
R03 = V
SS
Nl dtll t d
±20
I
(R13)
Input leakage
R13 = V
CC
/3
No load at all segment and
common lines V
CC
=3V
±20
nA
I
(R23)
Input
leakage
R23 = 2 × V
CC
/3
common
li
nes,
V
CC
=
3
V
±20
nA
V
(Sxx0)
V
(03)
V
(03)
− 0.1
V
(Sxx1)
Se
g
ment line
I 3 AV 3V
V
(13)
V
(13)
− 0.1
V
V
(Sxx2)
Segment
line
voltage
I
(Sxx)
= −3 µA, V
CC
= 3 V
V(
23)
V
(23)
− 0.1
V
V
(Sxx3)
V(
33)
V
(33)
+ 0.1
USART0 (see Note 1)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
(
τ
)
USART0: deglitch time V
CC
= 3 V, SYNC = 0, UART mode 150 280 500
ns
NOTE 1: The signal applied to the USART0 receive signal/terminal (URXD0) 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
URXD0 line.