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EFM32WG395 Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers |
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EFM32WG395 Datasheet(HTML) 3 Page - List of Unclassifed Manufacturers |
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3 / 77 page  Preliminary ...the world's most energy friendly microcontrollers 2013-05-06 - EFM32WG395FXX - d0194_Rev1.10 3 www.energymicro.com 2 System Summary 2.1 System Introduction The EFM32 MCUs are the world’s most energy friendly microcontrollers. With a unique combination of the powerful 32-bit ARM Cortex-M4, with DSP instruction support and floating-point unit, innovative low energy techniques, short wake-up time from energy saving modes, and a wide selection of peripherals, the EFM32WG microcontroller is well suited for any battery operated application as well as other systems requiring high performance and low-energy consumption. This section gives a short introduction to each of the modules in general terms and also shows a summary of the configuration for the EFM32WG395 devices. For a complete feature set and in-depth information on the modules, the reader is referred to the EFM32WG Reference Manual. A block diagram of the EFM32WG395 is shown in Figure 2.1 (p. 3) . Figure 2.1. Block Diagram Clock Managem ent Energy Managem ent Serial Int erfaces I/O Port s Core and Mem ory Tim ers and Triggers Analog Int erfaces Securit y 32-bit bus Peripheral Reflex Syst em ARM Cort ex™ M4 processor w it h DSP ext ensions and FPU Flash Program Mem ory LESENSE High Freq. RC Oscillat or High Freq. Cryst al Oscillat or Tim er/ Count er Low Energy Tim er Pulse Count er Real Tim e Count er Low Freq. Cryst al Oscillat or Low Freq. RC Oscillat or Wat chdog Tim er RAM Mem ory Ext . Bus Int erface General Purpose I/O Mem ory Prot ect ion Unit DMA Cont roller Debug Int erface w / ETM Ext ernal Int errupt s Pin Reset Hardw are AES WG395F64/128/256 ADC DAC Operat ional Am plifier USART I2C UART Pow er-on Reset Volt age Regulat or Back-up Pow er Dom ain Volt age Com parat or Brow n-out Det ect or TFT Driver Back-up RTC USB Analog Com parat or Low Energy Uart ™ Pin Wakeup Ult ra Low Freq. RC Oscillat or 2.1.1 ARM Cortex-M4 Core The ARM Cortex-M4 includes a 32-bit RISC processor, with DSP instruction support and floating-point unit, which can achieve as much as 1.25 Dhrystone MIPS/MHz. A Memory Protection Unit with support for up to 8 memory segments is included, as well as a Wake-up Interrupt Controller handling interrupts triggered while the CPU is asleep . The EFM32 implementation of the Cortex-M4 is described in detail in ARM Cortex-M4 Devices Generic User Guide. 2.1.2 Debug Interface (DBG) This device includes hardware debug support through a 2-pin serial-wire debug interface and an Embed- ded Trace Module (ETM) for data/instruction tracing. In addition there is also a 1-wire Serial Wire Viewer pin which can be used to output profiling information, data trace and software-generated messages. |
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