ZAMC4100 Datasheet, PDF (144/155 Pages) Integrated Device Technology – Actuator and Motor Controller

ZAMC4100 Datasheet
5.2.7. Reference Voltage Test
Event
There is failure in the ADC reference voltage.
Detection
The ADC input is connected to the internal reference voltage (this is not the ADC reference). The
value of this voltage is expected to be Vref/2 and the ADC should return the midscale value.
Details for software implementation:
ADC channel selected by the ADCCTRL register: IMPSEL[4:0] = 1C_HEX
Expected ADC conversion result:
ADCRES[9:0] = 512 ± 30 (unsigned result)
Capturing The event is captured in the MCU by reading the ADC conversion value.
Reaction
A response should be implemented in the MCU software depending on application requirements.
5.2.8. 5.0V Supply Test
Event
Regulator VDD5V0 voltage is out of range.
Detection The regulator’s output is measured with the ADC. The expected result is the ADC midscale value.
Details for software implementation:
ADC channel selected by the ADCCTRL register: IMPSEL[4:0] = 1D_HEX
Expected ADC conversion result:
ADCRES[9:0] = 512 ± 50 (unsigned result)
Capturing The event is captured in the MCU by reading the ADC conversion value.
Reaction
A response should be implemented in the MCU software depending on application requirements.
5.2.9. 2.5V Supply Test
Event
Regulator VDD2V5 voltage is out of range.
Detection The regulator’s output is measured with the ADC. The expected result is the ADC midscale value.
Details for software implementation:
ADC channel selected by the ADCCTRL register: IMPSEL[4:0] = 1E_HEX
Expected ADC conversion result:
ADCRES[9:0] = 512 ± 50 (unsigned result)
Capturing The event is captured in the MCU by reading the ADC conversion value.
Reaction
A response should be implemented in the MCU software depending on application requirements.
© 2016 Integrated Device Technology, Inc.
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January 26, 2016