EFM32TG210F32 Energy Micro, EFM32TG210F32 Datasheet - Page 86

• Manufacturer Part Number: EFM32TG210F32
• Description: MCU 32BIT 32KB FLASH 32-QFN
• Manufacturer: Energy Micro
• Series: Tiny Geckor

Specifications of EFM32TG210F32

• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 32MHz
• Connectivity: EBI/EMI, I²C, IrDA, SmartCard, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.8 V
• Data Converters: A/D 4x12b, D/A 1x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad
• Processor Series: EFM32
• Core: ARM Cortex-M3
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: UART, I2C, SPI
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 17
• Number Of Timers: 1
• Operating Supply Voltage: 1.8 V to 3.8 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Processor To Be Evaluated: EFM32TG210
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

10 EMU - Energy Management Unit
10.1 Introduction
10.2 Features
2010-12-21 - d0034_Rev0.90
The Energy Management Unit (EMU) manages all the low energy modes (EM) in EFM32TG
microcontrollers. Each energy mode manages if the CPU and the various peripherals are available. The
energy modes range from EM0 to EM4, where EM0, also called run mode, enables the CPU and all
peripherals. The lowest recoverable energy mode, EM3, disables the CPU and most peripherals while
maintaining wake-up and RAM functionality. EM4 disables everything except the POR, pin reset and
optionally GPIO state retention and EM4 reset wakeup request.
The various energy modes differ in:
• Energy consumption
• CPU activity
• Reaction time
• Wake-up triggers
• Active peripherals
• Available clock sources
Low energy modes EM1 to EM4 are enabled through the application software. In EM1-EM3, a range
of wake-up triggers return the microcontroller back to EM0. EM4 can only return to EM0 by power on
reset, external pin reset or em4 reset wakeup request.
• Energy Mode control from software
• Flexible wakeup from low energy modes
• Low wakeup time
0 1 2 3
4
...the world's most energy friendly microcontrollers
86
What?
The EMU (Energy Management Unit)
handles the different low energy modes in the
EFM32TG microcontrollers.
Why?
The need for performance and peripheral
functions varies over time in most
applications. By efficiently scaling the
available resources in real-time to match
the demands of the application, the energy
consumption can be kept at a minimum.
How?
With a broad selection of energy modes,
a high number of low-energy peripherals
available even in EM2, and short wake-
up time (2 µs from EM2 and EM3),
applications can dynamically minimize energy
consumption during program execution.
Quick Facts
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