MSP430FR6979 Datasheet, PDF (45/163 Pages) Texas Instruments – Mixed-Signal Microcontrollers

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MSP430FR6979, MSP430FR69791, MSP430FR6977
MSP430FR6928, MSP430FR6927, MSP430FR69271
SLAS797A – AUGUST 2014 – REVISED MARCH 2015
5.13.5 Peripherals
5.13.5.1 Digital I/Os
Table 5-11. Digital Inputs
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
V_IT+
Positive-going input threshold voltage
TEST CONDITIONS
V_CC
2.2 V
3.0 V
MIN TYP MAX UNIT
1.2
1.65
V
1.65
2.25
V_IT–
Negative-going input threshold voltage
2.2 V
0.55
3.0 V
0.75
1.00
V
1.35
V_hys
Input voltage hysteresis (V_IT+ – V_IT–)
2.2 V
0.44
3.0 V
0.60
0.98
V
1.30
R_Pull
C_I,dig
C_I,ana
Pullup or pulldown resistor
For pullup: V_IN = V_SS
For pulldown: V_IN = V_CC
Input capacitance, digital only port pins
V_IN = V_SS or V_CC
Input capacitance, port pins with shared analog
functions ⁽¹⁾
V_IN = V_SS or V_CC
20
35
50 kΩ
3
pF
5
pF
I_lkg(Px.y)
High-impedance input leakage current
Refer to notes ⁽²⁾ and ⁽³⁾
2.2 V,
3.0 V
–20
+20 nA
Ports with interrupt capability
t_(int)
External interrupt timing (external trigger pulse (see block diagram and
duration to set interrupt flag)⁽⁴⁾
terminal function
2.2 V,
3.0 V
20
ns
descriptions).
t_(RST)
External reset pulse duration on RST⁽⁵⁾
2.2 V,
3.0 V
2
µs
(1) If the port pins PJ.4/LFXIN and PJ.5/LFXOUT are used as digital I/Os, they are connected by a 4-pF capacitor and a 35-MΩ resistor in
series. At frequencies of approximately 1 kHz and lower, the 4-pF capacitor can add to the pin capacitance of PJ.4/LFXIN and/or
PJ.5/LFXOUT.
(2) The input leakage current is measured with V_SS or V_CC applied to the corresponding pins, unless otherwise noted.
(3) The input leakage of the digital port pins is measured individually. The port pin is selected for input and the pullup or pulldown resistor is
disabled.
(4) An external signal sets the interrupt flag every time the minimum interrupt pulse duration t_(int) is met. It may be set by trigger signals
shorter than t_(int).
(5) Not applicable if RST/NMI pin configured as NMI.
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Specifications
45
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MSP430FR69271