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PDF EFM32LG232 Data sheet ( Hoja de datos )

Número de pieza EFM32LG232
Descripción microcontrollers
Fabricantes Silicon Laboratories 
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...the world's most energy friendly microcontrollers
EFM32LG232 DATASHEET
F256/F128/F64
ARM Cortex-M3 CPU platform
• High Performance 32-bit processor @ up to 48 MHz
• Memory Protection Unit
Flexible Energy Management System
• 20 nA @ 3 V Shutoff Mode
• 0.4 µA @ 3 V Shutoff Mode with RTC
• 0.65 µA @ 3 V Stop Mode, including Power-on Reset, Brown-out
Detector, RAM and CPU retention
• 0.95 µA @ 3 V Deep Sleep Mode, including RTC with 32.768 kHz
oscillator, Power-on Reset, Brown-out Detector, RAM and CPU
retention
• 63 µA/MHz @ 3 V Sleep Mode
• 211 µA/MHz @ 3 V Run Mode, with code executed from flash
256/128/64 KB Flash
32 KB RAM
53 General Purpose I/O pins
• Configurable push-pull, open-drain, pull-up/down, input filter, drive
strength
• Configurable peripheral I/O locations
• 16 asynchronous external interrupts
• Output state retention and wake-up from Shutoff Mode
12 Channel DMA Controller
12 Channel Peripheral Reflex System (PRS) for autonomous in-
ter-peripheral signaling
Hardware AES with 128/256-bit keys in 54/75 cycles
Timers/Counters
• 4× 16-bit Timer/Counter
• 4×3 Compare/Capture/PWM channels
• Dead-Time Insertion on TIMER0
• 16-bit Low Energy Timer
• 1× 24-bit Real-Time Counter and 1× 32-bit Real-Time Counter
• 3× 16/8-bit Pulse Counter
• Watchdog Timer with dedicated RC oscillator @ 50 nA
Backup Power Domain
• RTC and retention registers in a separate power domain, avail-
able in all energy modes
• Operation from backup battery when main power drains out
Communication interfaces
• 3× Universal Synchronous/Asynchronous Receiv-
er/Transmitter
• UART/SPI/SmartCard (ISO 7816)/IrDA/I2S
• 2× Low Energy UART
• Autonomous operation with DMA in Deep Sleep
Mode
• 2× I2C Interface with SMBus support
• Address recognition in Stop Mode
Ultra low power precision analog peripherals
• 12-bit 1 Msamples/s Analog to Digital Converter
• 8 single ended channels/4 differential channels
• On-chip temperature sensor
• 12-bit 500 ksamples/s Digital to Analog Converter
• 2× Analog Comparator
• Capacitive sensing with up to 16 inputs
• 3× Operational Amplifier
• 6.1 MHz GBW, Rail-to-rail, Programmable Gain
• Supply Voltage Comparator
Low Energy Sensor Interface (LESENSE)
• Autonomous sensor monitoring in Deep Sleep Mode
• Wide range of sensors supported, including LC sen-
sors and capacitive buttons
Ultra efficient Power-on Reset and Brown-Out Detec-
tor
Debug Interface
• 2-pin Serial Wire Debug interface
• 1-pin Serial Wire Viewer
• Embedded Trace Module v3.5 (ETM)
Pre-Programmed UART Bootloader
Temperature range -40 to 85 ºC
Single power supply 1.98 to 3.8 V
TQFP64 package
32-bit ARM Cortex-M0+, Cortex-M3 and Cortex-M4 microcontrollers for:
• Energy, gas, water and smart metering
• Health and fitness applications
• Smart accessories
• Alarm and security systems
• Industrial and home automation

1 page




EFM32LG232 pdf
...the world's most energy friendly microcontrollers
2.1.11 Universal Synchronous/Asynchronous Receiver/Transmitter (US-
ART)
The Universal Synchronous Asynchronous serial Receiver and Transmitter (USART) is a very flexible
serial I/O module. It supports full duplex asynchronous UART communication as well as RS-485, SPI,
MicroWire and 3-wire. It can also interface with ISO7816 SmartCards, IrDA and I2S devices.
2.1.12 Pre-Programmed UART Bootloader
The bootloader presented in application note AN0003 is pre-programmed in the device at factory. Auto-
baud and destructive write are supported. The autobaud feature, interface and commands are described
further in the application note.
2.1.13 Low Energy Universal Asynchronous Receiver/Transmitter
(LEUART)
The unique LEUARTTM, 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.
2.1.14 Timer/Counter (TIMER)
The 16-bit general purpose Timer has 3 compare/capture channels for input capture and compare/Pulse-
Width Modulation (PWM) output. TIMER0 also includes a Dead-Time Insertion module suitable for motor
control applications.
2.1.15 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.
2.1.16 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.
2.1.17 Low Energy Timer (LETIMER)
The unique LETIMERTM, 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.
2.1.18 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.
2014-06-13 - EFM32LG232FXX - d0106_Rev1.30
5
www.silabs.com

5 Page





EFM32LG232 arduino
Symbol
IEM1
IEM2
...the world's most energy friendly microcontrollers
Parameter
EM1 current (Pro-
duction test condi-
tion = 14 MHz)
EM2 current
Condition
Min
1.2 MHz HFRCO, all peripher-
al clocks disabled, VDD= 3.0 V,
TAMB=25°C
1.2 MHz HFRCO, all peripher-
al clocks disabled, VDD= 3.0 V,
TAMB=85°C
48 MHz HFXO, all peripheral
clocks disabled, VDD= 3.0 V,
TAMB=25°C
48 MHz HFXO, all peripheral
clocks disabled, VDD= 3.0 V,
TAMB=85°C
28 MHz HFRCO, all peripher-
al clocks disabled, VDD= 3.0 V,
TAMB=25°C
28 MHz HFRCO, all peripher-
al clocks disabled, VDD= 3.0 V,
TAMB=85°C
21 MHz HFRCO, all peripher-
al clocks disabled, VDD= 3.0 V,
TAMB=25°C
21 MHz HFRCO, all peripher-
al clocks disabled, VDD= 3.0 V,
TAMB=85°C
14 MHz HFRCO, all peripher-
al clocks disabled, VDD= 3.0 V,
TAMB=25°C
14 MHz HFRCO, all peripher-
al clocks disabled, VDD= 3.0 V,
TAMB=85°C
11 MHz HFRCO, all peripher-
al clocks disabled, VDD= 3.0 V,
TAMB=25°C
11 MHz HFRCO, all peripher-
al clocks disabled, VDD= 3.0 V,
TAMB=85°C
6.6 MHz HFRCO, all peripher-
al clocks disabled, VDD= 3.0 V,
TAMB=25°C
6.6 MHz HFRCO, all peripher-
al clocks disabled, VDD= 3.0 V,
TAMB=85°C
1.2 MHz HFRCO. all peripher-
al clocks disabled, VDD= 3.0 V,
TAMB=25°C
1.2 MHz HFRCO. all peripher-
al clocks disabled, VDD= 3.0 V,
TAMB=85°C
EM2 current with RTC
prescaled to 1 Hz, 32.768
kHz LFRCO, VDD= 3.0 V,
TAMB=25°C
Typ Max
257
Unit
µA/
MHz
261 µA/
MHz
63 75 µA/
MHz
65 76 µA/
MHz
64 75 µA/
MHz
65 77 µA/
MHz
65 76 µA/
MHz
66 78 µA/
MHz
67 79 µA/
MHz
68 82 µA/
MHz
68 81 µA/
MHz
70 83 µA/
MHz
74 87 µA/
MHz
76 89 µA/
MHz
106 120 µA/
MHz
112
0.951
129 µA/
MHz
1.71 µA
2014-06-13 - EFM32LG232FXX - d0106_Rev1.30
11
www.silabs.com

11 Page







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