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EZR32LG230F64R55G Datasheet(PDF) 6 Page - Silicon Laboratories

Part # EZR32LG230F64R55G
Description  Building and home automation
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Manufacturer  SILABS [Silicon Laboratories]
Direct Link  http://www.silabs.com
Logo SILABS - Silicon Laboratories

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3.1.14 Low Energy Universal Asynchronous Receiver/Transmitter (LEUART)
The unique LEUART, the Low Energy UART, is a UART that allows two-way UART communication on a strict power budget. Only a
32.768 kHz clock is needed to allow UART communication up to 9600 baud/s. The LEUART includes all necessary hardware support to
make asynchronous serial communication possible with minimum of software intervention and energy consumption.
3.1.15 Timer/Counter (TIMER)
The 16-bit general purpose Timer has 3 compare/capture channels for input capture and compare/Pulse-Width Modulation (PWM) out-
put. TIMER0 also includes a Dead-Time Insertion module suitable for motor control applications.
3.1.16 Real Time Counter (RTC)
The Real Time Counter (RTC) contains a 24-bit counter and is clocked either by a 32.768 kHz crystal oscillator, or a 32.768 kHz RC
oscillator. In addition to energy modes EM0 and EM1, the RTC is also available in EM2. This makes it ideal for keeping track of time
since the RTC is enabled in EM2 where most of the device is powered down.
3.1.17 Backup Real Time Counter (BURTC)
The Backup Real Time Counter (BURTC) contains a 32-bit counter and is clocked either by a 32.768 kHz crystal oscillator, a 32.768
kHz RC oscillator or a 1 kHz ULFRCO. The BURTC is available in all Energy Modes and it can also run in backup mode, making it
operational even if the main power should drain out.
3.1.18 Low Energy Timer (LETIMER)
The unique LETIMER, the Low Energy Timer, is a 16-bit timer that is available in energy mode EM2 in addition to EM1 and EM0.
Because of this, it can be used for timing and output generation when most of the device is powered down, allowing simple tasks to be
performed while the power consumption of the system is kept at an absolute minimum. The LETIMER can be used to output a variety of
waveforms with minimal software intervention. It is also connected to the Real Time Counter (RTC), and can be configured to start
counting on compare matches from the RTC.
3.1.19 Pulse Counter (PCNT)
The Pulse Counter (PCNT) can be used for counting pulses on a single input or to decode quadrature encoded inputs. It runs off either
the internal LFACLK or the PCNTn_S0IN pin as external clock source. The module may operate in energy mode EM0 - EM3.
3.1.20 Analog Comparator (ACMP)
The Analog Comparator is used to compare the voltage of two analog inputs, with a digital output indicating which input voltage is high-
er. Inputs can either be one of the selectable internal references or from external pins. Response time and thereby also the current
consumption can be configured by altering the current supply to the comparator.
3.1.21 Voltage Comparator (VCMP)
The Voltage Supply Comparator is used to monitor the supply voltage from software. An interrupt can be generated when the supply
falls below or rises above a programmable threshold. Response time and thereby also the current consumption can be configured by
altering the current supply to the comparator.
3.1.22 Analog to Digital Converter (ADC)
The ADC is a Successive Approximation Register (SAR) architecture, with a resolution of up to 12 bits at up to one million samples per
second. The integrated input mux can select inputs from 8 external pins and 6 internal signals.
3.1.23 Digital to Analog Converter (DAC)
The Digital to Analog Converter (DAC) can convert a digital value to an analog output voltage. The DAC is fully differential rail-to-rail,
with 12-bit resolution. It has two single ended output buffers which can be combined into one differential output. The DAC may be used
for a number of different applications such as sensor interfaces or sound output.
EZR32LG230 Data Sheet
System Overview
silabs.com | Smart. Connected. Energy-friendly.
Rev. 1.1 | 5


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