Datasheet

MSP430F23x0
MIXED SIGNAL MICROCONTROLLER
SLAS518A -- AUGUST 2006 -- REVISED MAY 2007
21
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
Schmitt-trigger inputs -- Ports P1, P2, P3 P4, JTAG, RST/NMI, and XIN (see Note)
PARAMETER TEST CONDITIONS VCC MIN TYP MAX UNIT
P
i
t
i
i
i
t
t
h
h
l
d
0.45 0.75 V
CC
V
IT+
Positive-going input threshold
v
o
l
t
a
g
e
2.2 V 1.00 1.65
V
V
I
T
+
vo
l
t
age
3V 1.35 2.25
V
N
t
i
i
i
t
t
h
h
l
d
0.25 0.55 V
CC
V
IT--
Negative-going input threshold
v
o
l
t
a
g
e
2.2 V 0.55 1.20
V
V
I
T
--
vo
l
t
age
3V 0.75 1.65
V
V
In
p
ut volta
g
eh
y
steresis
2.2 V 0.2 1.0
V
V
hys
I
n
p
u
t
v
o
l
t
a
g
e
h
y
s
t
e
r
e
s
i
s
(V
IT+
-- V
IT--
)
3V 0.3 1.0
V
R
Pull
Pullup/pulldown resistor
For pullup: V
IN
=V
SS
;
For pulldown: V
IN
=V
CC
20 35 50 kΩ
C
I
Input capacitance V
IN
=V
SS
or V
CC
5 pF
NOTE : XIN only in bypass mode.
inputs -- Ports P1, P2
PARAMETER TEST CONDITIONS VCC MIN TYP MAX UNIT
t
(int)
External interrupt timing
Port P1, P2: P1.x to P2.x, External
trigger puls width to set interrupt
flag, (see Note)
2.2 V/3 V 20 ns
NOTE : An external signal sets the interrupt flag every time the minimum interrupt puls width t
(int)
is met. It may be set even with trigger signals
shorter than t
(int)
.
leakage current -- Ports P1, P2, P3 and P4
PARAMETER TEST CONDITIONS VCC MIN TYP MAX UNIT
I
lkg(Px.x)
High-impedance leakage current see Notes 1 and 2 2.2 V/3 V ±50 nA
NOTES: 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 pull--up/pull--down resistor
is disabled.