SLAS787 datasheet(19/52 Pages) TI2

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MSP430G2231-Q1

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SLAS787B – NOVEMBER 2011 – REVISED MARCH 2014

9.7 Schmitt-Trigger Inputs – Ports Px

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

0.45 VCC

0.75 VCC

VIT+

Positive-going input threshold voltage

3 V

1.35

2.25

0.25 VCC

0.55 VCC

VIT–

Negative-going input threshold voltage

3 V

0.75

1.65

Vhys

Input voltage hysteresis (VIT+ – VIT–)

3 V

0.3

For pullup: VIN = VSS

RPull

Pullup/pulldown resistor

3 V

Ω

For pulldown: VIN = VCC

Input capacitance

VIN = VSS or VCC

9.8 Leakage Current – Ports Px

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

MIN

MAX

UNIT

Ilkg(Px.y)

High-impedance leakage current

(1) (2)

3 V

±50

(1)

The leakage current is measured with VSS or VCC 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.

9.9 Outputs – Ports Px

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

VOH

High-level output voltage

I(OHmax) = –6 mA

(1)

3 V

VCC – 0.3

VOL

Low-level output voltage

I(OLmax) = 6 mA

(1)

3 V

VSS + 0.3

(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.

9.10 Output Frequency – Ports Px

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

Port output frequency

fPx.y

Px.y, CL = 20 pF, RL = 1 kΩ

(1) (2)

3 V

MHz

(with load)

fPort_CLK

Clock output frequency

Px.y, CL = 20 pF

(2)

3 V

MHz

(1)

A resistive divider with 2 × 0.5 k

Ω between VCC and VSS 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% VCC at the specified toggle frequency.

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