This pin has a dedicated AI GND pin (X1.18) that is internally connected to the I/O ground and data ground pins.
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This pin has a dedicated AI GND pin (X1.18) that is internally connected to the I/O ground and data ground pins. |
This type of pin is an analog input and a digital input
The configurable features are controlled by two control signals:
One control signal is for selecting:
Voltage mode: High impedance input for signal from 0 to 5 V with or without pull-up.
Current mode: Low impedance input for signal from 0 to 22 mA.
One control signal is for selecting (when in voltage mode):
Pull-up mode to +5 V by a resistor
Pull-down mode to GND by a resistor
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Configure the pin to current mode before applying the current signal. |
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A switch will disconnect the measurement circuit if an overvoltage event is detected. Overvoltage protection mode is indicated with a dedicated signal (DEV_DSC_OVP_STATE_X1_17). The protection mode is active as long as the overvoltage persists. The protection circuit can be bypassed (the switch will reconnect the measurement circuit) momentarily with a reset signal (DEV_DSC_OVP_RESET_X1_17). The signal is edge activated and the bypass time is fixed. |
This pin can also be used as digital input by using an application library.
The pin must be configured to voltage mode when used as a digital input
Electrical characteristics
|
Symbol |
Parameter |
Conditions |
Min |
Max |
Units |
|
VI |
Input Voltage measuring range |
Voltage mode |
0 |
5 |
V |
|
Overvoltage Detection Threshold |
Protection mode not active (Note 5) |
typ. 7,2 |
V |
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Protection mode active (Note 5) |
typ. 5,6 |
V |
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Scaling factor |
Voltage mode (Note 4) |
10/11 |
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Current mode (Note 4) |
10/11 |
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VPU |
Pull-up voltage |
(Note 1) |
typ. 5 |
V |
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II |
Input Current measuring range |
Current mode |
0 |
22 |
mA |
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RI |
Input Resistance |
Voltage mode, pull-up resistor not selected (referenced to GND) |
typ. 70 |
kΩ |
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Voltage mode, pull-up resistor selected (referenced to + 5 V) |
typ. 2200 |
Ω |
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Current mode (referenced to GND) |
typ. 220 |
Ω |
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Overvoltage protection mode, VI > Overvoltage detection threshold (referenced to GND) |
typ. 9,6 |
kΩ |
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BW |
Input Low Pass Filter Bandwidth |
Voltage mode (Note 3) |
typ. 1 |
kHz |
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Current mode (Note 3) |
typ. 1 |
kHz |
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IE |
Input Error |
Voltage mode |
0,25 |
V |
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Current mode |
1,1 |
mA |
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CI |
Input pin capacitance |
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typ. 4,4 |
nF |
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VI-range |
Input Voltage Range |
Voltage mode (Note 2) |
-0,5 |
43 |
V |
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Current mode (Note 2) |
-0,5 |
43 |
V |
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Note 1: Temperature-dependent.
Note 2: Exceeding the max value might cause damage to input.
Note 3: 2nd order low pass filter
Note 4: HW multiplies the measurement by 10/11. The effect is compensated in 6107Int.library (the measurement is multiplied by 11/10), so the measurement is automatically accurate when using Epec programming libraries. For more information about conversions, refer to Epec Programming and Libraries manual.
Note 5: When protection mode is active the measurement circuit is disconnected from the input.
