EFM32WG295 datasheet(5/82 Pages) SILABS

Part #	EFM32WG295

Description	Output state retention and wake-up from Shutoff Mode

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Manufacturer	SILABS [Silicon Laboratories]

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...the world's most energy friendly microcontrollers

2014-06-13 - EFM32WG295FXX - d0189_Rev1.40

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2.1.11 TFT Direct Drive

The EBI contains a TFT controller which can drive a TFT via a 565 RGB interface. The TFT controller

supports programmable display and port sizes and offers accurate control of frequency and setup and

hold timing. Direct Drive is supported for TFT displays which do not have their own frame buffer. In

that case TFT Direct Drive can transfer data from either on-chip memory or from an external memory

device to the TFT at low CPU load. Automatic alpha-blending and masking is also supported for transfers

through the EBI interface.

2.1.12 Inter-Integrated Circuit Interface (I2C)

The I

2C module provides an interface between the MCU and a serial I2C-bus. It is capable of acting as

both a master and a slave, and supports multi-master buses. Both standard-mode, fast-mode and fast-

mode plus speeds are supported, allowing transmission rates all the way from 10 kbit/s up to 1 Mbit/s.

Slave arbitration and timeouts are also provided to allow implementation of an SMBus compliant system.

The interface provided to software by the I

2C module, allows both fine-grained control of the transmission

process and close to automatic transfers. Automatic recognition of slave addresses is provided in all

energy modes.

2.1.13 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.

2.1.14 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.

2.1.15 Universal Asynchronous Receiver/Transmitter (UART)

The Universal Asynchronous serial Receiver and Transmitter (UART) is a very flexible serial I/O module.

It supports full- and half-duplex asynchronous UART communication.

2.1.16 Low Energy Universal Asynchronous Receiver/Transmitter

(LEUART)

The unique LEUART

TM, 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.

2.1.17 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.

2.1.18 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

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