C8051F700DK Silicon Laboratories Inc, C8051F700DK Datasheet - Page 84

• Manufacturer Part Number: C8051F700DK
• Description: DEV KIT FOR C8051F700
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F700DK

• Contents: Board, Cables, CD, Debugger, Power Supply
• Processor To Be Evaluated: C8051F7x
• Processor Series: C8051F7xx
• Interface Type: USB
• Operating Supply Voltage: 3.3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: C8051F7xx
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1635

C8051F70x/71x
15.5. CS0 Comparator
The CS0 comparator compares the latest capacitive sense conversion result with the value stored in
CS0THH:CS0THL. If the result is less than or equal to the stored value, the CS0CMPF bit(CS0CN:0) is set
to 0. If the result is greater than the stored value, CS0CMPF is set to 1.
If the CS0 conversion accumulator is configured to accumulate multiple conversions, a comparison will not
be made until the last conversion has been accumulated.
An interrupt will be generated if CS0 greater-than comparator interrupts are enabled by setting the ECS-
GRT bit (EIE2.1) when the comparator sets CS0CMPF to 1.
If auto-scan is running when the comparator sets the CS0CMPF bit, no further auto-scan initiated conver-
sions will start until firmware sets CS0BUSY to 1.
A CS0 greater-than comparator event can wake a device from suspend mode. This feature is useful in sys-
tems configured to continuously sample one or more capacitive sense channels. The device will remain in
the low-power suspend state until the captured value of one of the scanned channels causes a CS0
greater-than comparator event to occur. It is not necessary to have CS0 comparator interrupts enabled in
order to wake a device from suspend with a greater-than event.
For a summary of behavior with different CS0 comparator, auto-scan, and auto accumulator settings,
please see Table 15.2.
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