MSP430F6779A Datasheet, PDF (49/176 Pages) Texas Instruments – Polyphase Metering SoCs

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MSP430F6779A, MSP430F6778A, MSP430F6777A, MSP430F6776A, MSP430F6775A
MSP430F6769A, MSP430F6768A, MSP430F6767A, MSP430F6766A, MSP430F6765A
MSP430F6749A, MSP430F6748A, MSP430F6747A, MSP430F6746A, MSP430F6745A
SLAS982 – MAY 2014
5.8.6 RTC Tamper Detect Pin
Table 5-33. Schmitt-Trigger Inputs, RTC Tamper Detect Pin
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
AUXVCC3 MIN TYP
V_IT+ Positive-going input threshold voltage
1.8 V
0.80
3V
1.50
V_IT– Negative-going input threshold voltage
1.8 V
0.45
3V
0.75
V_hys Input voltage hysteresis (V_IT+ – V_IT–)
1.8 V
0.3
3V
0.4
R_Pull Pullup or pulldown resistor
For pullup: V_IN = V_SS
For pulldown: V_IN =
AUXVCC3
20
35
C_I
Input capacitance
V_IN = V_SS or AUXVCC3
5
MAX
1.40
2.10
1.00
1.65
0.85
1.0
UNIT
V
V
V
50 kΩ
pF
Table 5-34. Inputs, RTC Tamper Detect Pin⁽¹⁾
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
AUXVCC3 MIN MAX UNIT
t_(int)
External interrupt timing⁽²⁾
Port P1, P2: P1.x to P2.x, External trigger pulse duration
to set interrupt flag
2.2 V, 3 V
20
ns
(1) Some devices may contain additional ports with interrupts. See the block diagram and terminal function descriptions.
(2) 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).
Table 5-35. Leakage Current, RTC Tamper Detect Pin
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
I_lkg(Px.y)
PARAMETER
High-impedance leakage current
TEST CONDITIONS
See ^{(1) (2)}
AUXVCC3
1.8 V, 3 V
MIN MAX UNIT
-50 +50 nA
(1) The leakage current is measured with V_SS or V_CC applied to the corresponding pins, unless otherwise noted.
(2) The leakage of the digital port pins is measured individually. The port pin is selected for input and the pullup or pulldown resistor is
disabled.
Table 5-36. Outputs, RTC Tamper Detect Pin
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
V_OH High-level output voltage
V_OL Low-level output voltage
TEST CONDITIONS
I_(OHmax) = –100 µA ⁽¹⁾
I_(OHmax) = –200 µA⁽¹⁾
I_(OHmax) = –100 µA⁽¹⁾
I_(OHmax) = –200 µA⁽¹⁾
I_(OLmax) = 100 µA ⁽²⁾
I_(OLmax) = 200 µA⁽²⁾
I_(OLmax) = 100 µA⁽²⁾
I_(OLmax) = 200 µA⁽²⁾
AUXVCC3
1.8 V
3V
1.8 V
3V
MIN
MAX UNIT
1.50
1.80
1.20
1.80
V
2.70
3.00
2.40
3.00
0.00
0.25
0.00
0.60
V
0.00
0.25
0.00
0.60
(1) The maximum total current, I_(OHmax), for all outputs combined should not exceed ±20 mA to hold the maximum voltage drop specified.
See Section 5.3 for more details.
(2) The maximum total current, I_(OHmax), for all outputs combined should not exceed ±20 mA to hold the maximum voltage drop specified.
See Section 5.3 for more details.
Copyright © 2014, Texas Instruments Incorporated
Specifications
49
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