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PDF EFM32JG1 Data sheet ( Hoja de datos )
| Número de pieza | EFM32JG1 | |
| Descripción | microcontrollers | |
| Fabricantes | Silicon Laboratories | |
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EFM32 Jade Gecko Family
EFM32JG1 Data Sheet
The EFM32 Jade Gecko MCUs are the world’s most energy-
friendly microcontrollers.
EFM32JG1 features a powerful 32-bit ARM® Cortex®-M3 and a wide selection of periph-
erals, including a unique cryptographic hardware engine supporting AES, ECC, and
SHA. These features, combined with ultra-low current active mode and short wake-up
time from energy-saving modes, make EFM32JG1 microcontrollers well suited for any
battery-powered application, as well as other systems requiring high performance and
low-energy consumption.
Example applications:
• IoT devices and sensors
• Health and fitness
• Smart accessories
• Home automation and security
• Industrial and factory automation
ENERGY FRIENDLY FEATURES
• ARM Cortex-M3 at 40 MHz
• Ultra low energy operation:
• 1.1 μA EM3 Stop current (CRYOTIMER
running with state/RAM retention)
• 1.4 μA EM2 DeepSleep current (RTCC
running with state and RAM retention)
• 60 μA/MHz in Energy Mode 0 (EM0)
• Hardware cryptographic engine supports
AES, ECC, and SHA
• Integrated dc-dc converter
• CRYOTIMER operates down to EM4
• 5 V tolerant I/O
Core / Memory
ARM CortexTM M3 processor
Memory
Protection Unit
Flash Program
Memory
RAM Memory Debug Interface DMA Controller
Clock Management
High Frequency
Crystal
Oscillator
Low Frequency
RC Oscillator
Low Frequency
Crystal
Oscillator
High Frequency
RC Oscillator
Auxiliary High
Frequency RC
Oscillator
Ultra Low
Frequency RC
Oscillator
Energy Management
Voltage
Regulator
Voltage Monitor
DC-DC
Converter
Power-On Reset
Brown-Out
Detector
Serial Interfaces
I/O Ports
32-bit bus
Peripheral Reflex System
Timers and Triggers
Analog Interfaces
Other
USART
Low Energy UARTTM
I2C
External Interrupts
General Purpose I/O
Pin Reset
Pin Wakeup
Timer/Counter
Pulse Counter
Watchdog Timer
Low Energy Timer
Real Time Counter
and Calendar
CRYOTIMER
ADC
Analog Comparator
IDAC
CRYPTO
CRC
Lowest power mode with peripheral operational:
EM0 - Active
EM1 - Sleep
EM2 – Deep Sleep
EM3 - Stop
EM4 - Hibernate
EM4 - Shutoff
silabs.com | Smart. Connected. Energy-friendly.
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
Preliminary Rev. 0.31
1 page  
EFM32JG1 Data Sheet
System Overview
3.2 Power
The EFM32JG1 has an Energy Management Unit (EMU) and efficient integrated regulators to generate internal supply voltages. Only a
single external supply voltage is required, from which all internal voltages are created. An optional integrated dc-dc buck regulator can
be utilized to further reduce the current consumption. The dc-dc regulator requires one external inductor and one external capacitor.
AVDD and VREGVDD need to be 1.85 V or higher for the MCU to operate across all conditions; however the rest of the system will
operate down to 1.62 V, including the digital supply and I/O. This means that the device is fully compatible with 1.8 V components.
Running from a sufficiently high supply, the device can use the dc-dc to regulate voltage not only for itself, but also for other PCB com-
ponents, supplying up to a total of 200 mA.
3.2.1 Energy Management Unit (EMU)
The Energy Management Unit manages transitions of energy modes in the device. Each energy mode defines which peripherals and
features are available and the amount of current the device consumes. The EMU can also be used to turn off the power to unused RAM
blocks, and it contains control registers for the dc-dc regulator and the Voltage Monitor (VMON). The VMON is used to monitor multiple
supply voltages. It has multiple channels which can be programmed individually by the user to determine if a sensed supply has fallen
below a chosen threshold.
3.2.2 DC-DC Converter
The dc-dc buck converter covers a wide range of load currents and provides up to 90% efficiency in energy modes EM0, EM1, EM2
and EM3, and can supply up to 200 mA to the device and surrounding PCB components. Protection features include programmable
current limiting, short-circuit protection, and dead-time protection. The dc-dc converter may also enter bypass mode when the input volt-
age is too low for efficient operation. In bypass mode, the dc-dc input supply is internally connected directly to its output through a low
resistance switch. Bypass mode also supports in-rush current limiting to avoid dipping the input supply due to excessive current transi-
ents.
3.3 General Purpose Input/Output (GPIO)
EFM32JG1 has up to 32 General Purpose Input/Output pins. Each GPIO pin can be individually configured as either an output or input.
More advanced configurations including open-drain, open-source, and glitch-filtering can be configured for each individual GPIO pin.
The GPIO pins can be overridden by peripheral connections, like SPI communication. Each peripheral connection can be routed to sev-
eral GPIO pins on the device. The input value of a GPIO pin can be routed through the Peripheral Reflex System to other peripherals.
The GPIO subsystem supports asynchronous external pin interrupts.
3.4 Clocking
3.4.1 Clock Management Unit (CMU)
The Clock Management Unit controls oscillators and clocks in the EFM32JG1. Individual enabling and disabling of clocks to all periph-
eral modules is perfomed by the CMU. The CMU also controls enabling and configuration of the oscillators. A high degree of flexibility
allows software to optimize energy consumption in any specific application by minimizing power dissipation in unused peripherals and
oscillators.
3.4.2 Internal and External Oscillators
The EFM32JG1 supports two crystal oscillators and fully integrates four RC oscillators, listed below.
• A high frequency crystal oscillator (HFXO) with integrated load capacitors, tunable in small steps, provides a precise timing refer-
ence for the MCU. Crystal frequencies in the range from 38 to 40 MHz are supported. An external clock source such as a TCXO can
also be applied to the HFXO input for improved accuracy over temperature.
• A 32.768 kHz crystal oscillator (LFXO) provides an accurate timing reference for low energy modes.
• An integrated high frequency RC oscillator (HFRCO) is available for the MCU system, when crystal accuracy is not required. The
HFRCO employs fast startup at minimal energy consumption combined with a wide frequency range.
• An integrated auxilliary high frequency RC oscillator (AUXHFRCO) is available for timing the general-purpose ADC and the Serial
Wire debug port with a wide frequency range.
• An integrated low frequency 32.768 kHz RC oscillator (LFRCO) can be used as a timing reference in low energy modes, when crys-
tal accuracy is not required.
• An integrated ultra-low frequency 1 kHz RC oscillator (ULFRCO) is available to provide a timing reference at the lowest energy con-
sumption in low energy modes.
silabs.com | Smart. Connected. Energy-friendly.
Preliminary Rev. 0.31 | 4
5 Page 
4. Electrical Specifications
EFM32JG1 Data Sheet
Electrical Specifications
4.1 Electrical Characteristics
All electrical parameters in all tables are specified under the following conditions, unless stated otherwise:
• Typical values are based on TAMB=25 °C and VDD= 3.3 V, by production test and/or technology characterization.
• Minimum and maximum values represent the worst conditions of ambient temperature, supply voltage, and process variation.
Refer to Table 4.2 General Operating Conditions on page 11 for more details about operational supply and temperature limits.
4.1.1 Absolute Maximum Ratings
Stresses above those listed below may cause permanent damage to the device. This is a stress rating only and functional operation of
the devices at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure
to maximum rating conditions for extended periods may affect device reliability. For more information on the available quality and relia-
bility data, see the Quality and Reliability Monitor Report at http://www.silabs.com/support/quality/pages/default.aspx.
Table 4.1. Absolute Maximum Ratings
Parameter
Symbol
Storage temperature range TSTG
External main supply voltage VDDMAX
External main supply voltage VDDRAMPMAX
ramp rate
Voltage on any 5V tolerant
GPIO pin1
VDIGPIN
Test Condition
Min Typ
-50 -
0-
--
-0.3 -
Voltage on non-5V tolerant
GPIO pins
-0.3 -
Voltage on HFXO pins
VHFXOPIN
-0.3 -
Total current into VSS ground IVSSMAX
lines (sink)
--
Current per I/O pin (sink)
Current per I/O pin (source)
IIOMAX
--
--
Current for all I/O pins (sink)
Current for all I/O pins
(source)
IIOALLMAX
--
--
Voltage difference between ΔVDD
AVDD and VREGVDD
--
Note:
1. When a GPIO pin is routed to the analog module through the APORT, the maximum voltage = IOVDD.
Max Unit
150 °C
3.8 V
1 V / μs
Min of 5.25
and IOVDD
+2
IOVDD+0.3
V
V
1.4
TBD
V
mA
50
50
TBD
TBD
0.3
mA
mA
mA
mA
V
silabs.com | Smart. Connected. Energy-friendly.
Preliminary Rev. 0.31 | 10
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet EFM32JG1.PDF ] | |
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