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PDF EFM32G840F128-QFN64 Data sheet ( Hoja de datos )
| Número de pieza | EFM32G840F128-QFN64 | |
| Descripción | Microcontrollers | |
| Fabricantes | Silicon Laboratories | |
| Logotipo |  |
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...the world's most energy friendly microcontrollers
EFM32G840 DATASHEET
F128/F64/F32
• ARM Cortex-M3 CPU platform
• High Performance 32-bit processor @ up to 32 MHz
• Memory Protection Unit
• Wake-up Interrupt Controller
• Flexible Energy Management System
• 20 nA @ 3 V Shutoff Mode
• 0.6 µA @ 3 V Stop Mode, including Power-on Reset, Brown-out
Detector, RAM and CPU retention
• 0.9 µA @ 3 V Deep Sleep Mode, including RTC with 32.768 kHz
oscillator, Power-on Reset, Brown-out Detector, RAM and CPU
retention
• 45 µA/MHz @ 3 V Sleep Mode
• 180 µA/MHz @ 3 V Run Mode, with code executed from flash
• 128/64/32 KB Flash
• 16/16/8 KB RAM
• 56 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
• 8 Channel DMA Controller
• 8 Channel Peripheral Reflex System (PRS) for autonomous in-
ter-peripheral signaling
• Hardware AES with 128/256-bit keys in 54/75 cycles
• Timers/Counters
• 3× 16-bit Timer/Counter
• 3×3 Compare/Capture/PWM channels
• Dead-Time Insertion on TIMER0
• 16-bit Low Energy Timer
• 1× 24-bit Real-Time Counter
• 3× 8-bit Pulse Counter
• Watchdog Timer with dedicated RC oscillator @ 50 nA
• Integrated LCD Controller for up to 4×24 segments
• Voltage boost, adjustable contrast and autonomous animation
• Communication interfaces
• 3× Universal Synchronous/Asynchronous Receiv-
er/Transmitter
• UART/SPI/SmartCard (ISO 7816)/IrDA
• Triple buffered full/half-duplex operation
• 2× Low Energy UART
• Autonomous operation with DMA in Deep Sleep
Mode
• 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 8 inputs
• Supply Voltage Comparator
• Ultra efficient Power-on Reset and Brown-Out Detec-
tor
• 2-pin Serial Wire Debug interface
• 1-pin Serial Wire Viewer
• Pre-Programmed UART Bootloader
• Temperature range -40 to 85 ºC
• Single power supply 1.85 to 3.8 V
• QFN64 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  
...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, and IrDA 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 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.
2.1.17 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.
2.1.18 Analog Comparator (ACMP)
The Analog Comparator is used to compare the voltage of two analog inputs, with a digital output indi-
cating which input voltage is higher. 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.
2013-11-22 - EFM32G840FXX - d0008_Rev1.71
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5 Page 
3.4 Current Consumption
Table 3.4. Current Consumption
...the world's most energy friendly microcontrollers
Symbol
IEM0
IEM1
IEM2
IEM3
IEM4
Parameter
Condition
Min
32 MHz HFXO, all peripheral
clocks disabled, VDD= 3.0 V
28 MHz HFRCO, all peripheral
clocks disabled, VDD= 3.0 V
EM0 current. No
prescaling. Running
prime number cal-
culation code from
Flash.
21 MHz HFRCO, all peripheral
clocks disabled, VDD= 3.0 V
14 MHz HFRCO, all peripheral
clocks disabled, VDD= 3.0 V
11 MHz HFRCO, all peripheral
clocks disabled, VDD= 3.0 V
6.6 MHz HFRCO, all peripheral
clocks disabled, VDD= 3.0 V
1.2 MHz HFRCO, all peripheral
clocks disabled, VDD= 3.0 V
32 MHz HFXO, all peripheral
clocks disabled, VDD= 3.0 V
EM1 current
28 MHz HFRCO, all peripheral
clocks disabled, VDD= 3.0 V
21 MHz HFRCO, all peripheral
clocks disabled, VDD= 3.0 V
14 MHz HFRCO, all peripheral
clocks disabled, VDD= 3.0 V
11 MHz HFRCO, all peripheral
clocks disabled, VDD= 3.0 V
6.6 MHz HFRCO, all peripheral
clocks disabled, VDD= 3.0 V
1.2 MHz HFRCO. all peripheral
clocks disabled, VDD= 3.0 V
EM2 current
EM3 current
EM4 current
EM2 current with RTC at 1
Hz, RTC prescaled to 1kHz,
32.768 kHz LFRCO, VDD= 3.0
V, TAMB=25°C
EM2 current with RTC at 1
Hz, RTC prescaled to 1kHz,
32.768 kHz LFRCO, VDD= 3.0
V, TAMB=85°C
VDD= 3.0 V, TAMB=25°C
VDD= 3.0 V, TAMB=85°C
VDD= 3.0 V, TAMB=25°C
VDD= 3.0 V, TAMB=85°C
Typ Max Unit
180 µA/
MHz
181 235 µA/
MHz
183 237 µA/
MHz
185 243 µA/
MHz
186 246 µA/
MHz
191 257 µA/
MHz
220 µA/
MHz
45 µA/
MHz
47 62 µA/
MHz
48 64 µA/
MHz
50 69 µA/
MHz
51 72 µA/
MHz
56 83 µA/
MHz
103 µA/
MHz
0.9 µA
3.0 6.0 µA
0.59 µA
2.75 5.8 µA
0.02 µA
0.25 0.7 µA
2013-11-22 - EFM32G840FXX - d0008_Rev1.71
11
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11 Page | ||
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