Datasheet

MSP430G2x31
MSP430G2x21
www.ti.com SLAS694J –FEBRUARY 2010–REVISED FEBRUARY 2013
Schmitt-Trigger Inputs – Ports Px
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
0.45 V
CC
0.75 V
CC
V
IT+
Positive-going input threshold voltage V
3 V 1.35 2.25
0.25 V
CC
0.55 V
CC
V
IT–
Negative-going input threshold voltage V
3 V 0.75 1.65
V
hys
Input voltage hysteresis (V
IT+
– V
IT–
) 3 V 0.3 1 V
For pullup: V
IN
= V
SS
R
Pull
Pullup/pulldown resistor 3 V 20 35 50 kΩ
For pulldown: V
IN
= V
CC
C
I
Input capacitance V
IN
= V
SS
or V
CC
5 pF
Leakage Current – Ports Px
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN MAX UNIT
I
lkg(Px.y)
High-impedance leakage current
(1) (2)
3 V ±50 nA
(1) The leakage current is measured with V
SS
or V
CC
applied to the corresponding pin(s), unless otherwise noted.
(2) The leakage of the digital port pins is measured individually. The port pin is selected for input and the pullup/pulldown resistor is
disabled.
Outputs – Ports Px
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
V
OH
High-level output voltage I
(OHmax)
= –6 mA
(1)
3 V V
CC
– 0.3 V
V
OL
Low-level output voltage I
(OLmax)
= 6 mA
(1)
3 V V
SS
+ 0.3 V
(1) The maximum total current, I
(OHmax)
and I
(OLmax)
, for all outputs combined should not exceed ±48 mA to hold the maximum voltage drop
specified.
Output Frequency – Ports Px
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
Port output frequency
f
Px.y
Px.y, C
L
= 20 pF, R
L
= 1 kΩ
(1) (2)
3 V 12 MHz
(with load)
f
Port_CLK
Clock output frequency Px.y, C
L
= 20 pF
(2)
3 V 16 MHz
(1) A resistive divider with 2 × 0.5 kΩ between V
CC
and V
SS
is used as load. The output is connected to the center tap of the divider.
(2) The output voltage reaches at least 10% and 90% V
CC
at the specified toggle frequency.
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