Fitting in with Atmel’s SAM D20 family

Atmel’s recently launched SAM D20 lineup is based on the ARM Cortex- M0+ core, setting a new benchmark for flexibility and ease-of-use.

The MCU series is ideal for a number of low-power, cost-sensitive industrial and consumer devices, such as GPS trackers, appliance controllers, intelligent remotes and optical transceivers.

As William Wong of Electronic Design notes, the SAM D20 specifically targets the entire low-end space currently handled by 8- and 16-bit microcontrollers, while also hitting the low-end 32-bit space.

“The SAM D20 incorporates high-end support like the high-speed bus matrix linked to three AHB/APB bridges. System and power controllers can be found off one bridge. Memory controllers are found off another,” Wong wrote in an article posted on Electronic Design.

“The third bridge handles the convention interfaces that include up to six programmable serial ports, eight timers, a 20-channel, 350-ksample/s analog-to-digital converter (ADC), a pair of comparators, and a 10-bit, 350-ksample/s digital-to-analog converter (DAC). There is also Atmel’s touch interface controller.”

In addition, Wong described Atmel’s advanced Event System which allows peripheral events to trigger actions – without processor intervention (the core can actually be sleeping), while pointing out that the SAM D20 family supports up to 32 kbytes for RAM and 256 kbytes of flash memory.

“Atmel is already known for its microcontroller families, including the 8-bit AVR,” Wong continued. “The SAM D20 will follow in the pin steps of these chips with 32-, 48-, and 64-pin versions that match the SAM4L family.”

The full text of “Cortex-M0+ Family Supports The Low-End Space,” written by William Wong, can be read here on Electronic Design.

Bosch Sensortec GmbH adopts Atmel’s SAM D20

Last month, Atmel introduced the SAM D20, a comprehensive product lineup based on ARM’s Cortex -M0+. The new microcontroller series combines the performance and energy efficiency of an ARM Cortex -M0+ MCU with an optimized architecture and peripheral set.

In short, the SAM D20 offers a truly differentiated general-purpose lineup that is ideal for a wide range of low-power, cost-sensitive devices, such as GPS trackers, appliance controllers, intelligent remotes and optical transceivers.

Key hardware specs include:

• 48MHz operation, 2.14 Coremark/MHz
• Single-cycle IO access, supporting a pin toggling frequency up to 24 MHz
• 8-channel event system
• <150µA/MHz, <2µA RAM retention and RTC
• Choose between internal/external oscillators and on-the-fly clock switching
• Up to eight 16-bit Timer/Counters, 12-bit 350ksps ADC and 10-bit DAC
• Peripheral touch controller (PTC) supports up to 256 channels
• Real Time Clock (RTC) and calendar with leap year correction

Although Atmel’s SAM D20 only recently hit the market, the ARM-based MCU has already been adopted by industry heavyweight Bosch Sensortec GmbH.

“Customers for our next-generation self-contained 9-axis absolute orientation sensor (BNO055) will benefit from the same high performance with lower power consumption,” said Dr. Stefan Finkbeiner, CEO and General Manager, Bosch Sensortec GmbH, a global provider of micro-mechanical sensors for the consumer electronics market.

“Atmel’s SAM D20 device optimizes Bosch Sensortec’s sensor fusion software at a level that was not previously possible.”

To be sure, the BNO055 is the first in a new family of Application Specific Sensor Nodes (ASSN) implementing an intelligent 9-axis “Absolute Orientation Sensor,” which includes sensors and sensor fusion in a single package. By integrating sensors and sensor fusion in one device, the BNO055 frees users from the complexities of multivendor solutions. This means more time can be spent on product innovation, including novel applications such as wearable hardware. It is also the perfect choice for augmented reality, more immersive gaming, personal health and fitness, indoor navigation and any other application requiring context awareness.

Additional information about Bosch’s BNO055 can be found here – and you can read more about Atmel’s SAM D20 here.