SiM3C1xx
4.7.4. 16-Channel Capacitance-to-Digital Converter (CAPSENSE0)
The Capacitance Sensing module measures capacitance on external pins and converts it to a digital value. The
CAPSENSE module has the following features:
Multiple start-of-conversion sources (CSnTx).
Option to convert to 12, 13, 14, or 16 bits.
Automatic threshold comparison with programmable polarity (“less than or equal” or “greater than”).
Four operation modes: single conversion, single scan, continuous single conversion, and continuous scan.
Auto-accumulate mode that will take and average multiple samples together from a single start of
conversion signal.
Single bit retry options available to reduce the effect of noise during a conversion.
Supports channel bonding to monitor multiple channels connected together with a single conversion.
Scanning option allows the module to convert a single or series of channels and compare against the
threshold while the AHB clock is stopped and the core is in a low power mode.
4.7.5. Low Current Comparators (CMP0, CMP1)
The Comparators take two analog input voltages and output the relationship between these voltages (less than or
greater than) as a digital signal. The Low Power Comparator module includes the following features:
Multiple sources for the positive and negative poles, including VDD, VREF, and 8 I/O pins.
Two outputs are available: a digital synchronous latched output and a digital asynchronous raw output.
Programmable hysteresis and response time.
Falling or rising edge interrupt options on the comparator output.
4.7.6. Current-to-Voltage Converter (IVC0)
The IVC module provides inputs to the SARADCn modules so the input current can be measured. The IVC module
has the following features:
Two independent channels.
Programmable input ranges (1–6 mA full-scale).
46
Preliminary Rev. 0.8
SILICON [ SILICON ]
