SIM3U146-B-GM Silicon Labs, SIM3U146-B-GM Datasheet - Page 49

• Manufacturer Part Number: SIM3U146-B-GM
• Description: ARM Microcontrollers - MCU ARM Cortex-M3 USB 64KB QFN64
• Manufacturer: Silicon Labs

Specifications of SIM3U146-B-GM

• Rohs: yes
• Core: ARM Cortex M3
• Processor Series: SIM3U1xx
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 80 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 32 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.8 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: QFN-64
• Mounting Style: SMD/SMT
• Interface Type: 2 x I2C, I2S, 3 x SPI, 2 x USART, 2 x UART
• Number Of Programmable I/os: 65
• Number Of Timers: 2 x 32 bit
• Supply Voltage - Max: 3.6 V

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:
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:
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:
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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.
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.
Two independent channels.
Programmable input ranges (1–6 mA full-scale).
Rev. 1.0
SiM3U1xx
49