Atmel: AVR XMEGA B – Ultra-low-power LCD controller

 

 

 

 

Integration of an ultra-low-power LCD controller in AVR XMEGA microcontrollers reduces design complexity, lowers system cost and increases battery life time for applications that require a small graphical user interface.

http://www.youtube.com/watch?v=GfjbIGPDuQo
[Watch the XMEGA B Introduction]

In sleep mode, XMEGA B devices run its real time counter, a 32.768 kHz crystal oscillator and drive an LCD with up to 160 segments with total power consumption of only 3µA. In addition:

• ASCII character mapping reduces code size and the time needed to update your LCD. It also simplifies source code and reduces the time spent in active mode by updating the LCD 30 times faster than traditional solutions. The result is more time in power saving sleep mode, and much shorter active cycles, where these applications draw the majority of their power today.

• Programmable segment blinking allows LCD segments to blink without CPU usage and works in deep sleep mode and reduces interrupt and wake-up frequency up to 99%. This makes AVR XMEGA devices ideal for clocks with second count indication, alarms or anything where you want some type of dynamic indicator.

• SWAP mode simplifies hardware design. To avoid more complex and expensive external signal rerouting, the LCD segment lines can be internally rerouted to different pins.

With all this, XMEGA B will increase battery life time, decrease code size and reduce design time.

XMEGA B devices also include full speed USB device with operation from internal oscillator, dual 12-bit ADC with programmable gain stage, QTouch capacitive touch sensing, and SPI, I2C and USART connectivity. Event system and DMA offload interrupts and data transfer tasks from the CPU.

XMEGA B is part of Atmel’s AVR XMEGA microcontroller family, developed for applications that need real-time performance and high integration combined with ultra low power consumption.

Atmel AVR XMEGA B

• Up to 160 LCD segments
• Event system and DMA
• Ultra Low-Power
• USB full-speed device
• High analog performance
• QTouch capacitive touch
• 64k - 128k of Flash memory

 

XMEGA Line Card

Atmel® AVR® XMEGA® microcontrollers deliver the best combination of real-time performance, high integration and low power consumption for 8/16-bit MCU applications. XMEGA devices have advanced analog and digital converters that deliver both high speed and high resolution.

www.youtube.com/watch
[XMEGA Product Line overview]

 

Atmel picoPower® technology enables AVR XMEGA devices to deliver true 1.6 Volt operation, which means all functions—including the ADC and DAC, Flash and EEPROM memory programming operate down to 1.6V. This allows safe operation directly from a 1.8V ±10% power supply. It also enables deeper battery discharge to increase battery life.

http://www.youtube.com/watch?v=0ETWslyuKCU
[See how to reduce power consumption]

 

 

Getting stared with AVR XMEGA B

 XMEGA B Xplained available on Arrow Testdrive. Order a free evaluation board here:
• testdrive@arroweurope.com

The XMEGA website contains information about all XMEGA products, datasheets and application notes:
• http://www.atmel.com/xmega

 

[Ordering Code: ATXMEGAB1-XPLD]