Date: 06/03/2011
32 bit MCU for HVAC, power window, door seat control in cars
Atmel has released automotive-qualified AT32UC3C0512C AVR microcontroller with 512KB of embedded flash memory. As a first member of a 32-bit AVR MCU family dedicated to motor control applications such as HVAC, power window, power doors and power seats, this IC features PWM controller and analog functions on-chip for direct motor control, as well as automotive interface on-chip (CAN, LIN) for in-car communication. The new Atmel AVR UC3C family will also be available as true 5V devices up to 125°C.
Atmel says its UC3C automotive-qualified MCUs offer all the necessary features required for even the toughest motor control applications such as sensorless brushless DC motors (BLDCs), the UC3C family efficiently controls the motor by incorporating a fast 4-channel PWM controller with a 20-bit precision, dead-time generation and fault protection, a 16-channel, 12-bit pipelined analog-to-digital converter (ADC), a 4-channel 12-bit digital-to-analog converter (DAC), an embedded temperature sensor as well as four analog comparators for back-electromagnetic force (EMF) sensing.
Other features of the new UC3C family include an independent peripheral event system coupled with DMA channels to allow inter-peripheral communication without CPU intervention and to eliminate potential jitter. This guarantees a two-cycle latency between the completion of one peripheral operation and the start of another. The family also includes algorithms, such as field oriented control (park and clack transformations), and includes an IEEE 754-1985-compatible floating point unit (FPU), which increases the performance, precision and dynamic range of calculations. The use of the FPU enhances signal processing, filtering and noise suppression.
Synchronous/asynchronous receiver/transmitters (USART), and five I2C-compatible two wire interfaces (TWI) are some more features in this chip.
"We adapted our embedded software to support the UC3C," said Holger Soehnle, product manager for Embedded Software at Vector Informatik GmbH. "Already available are two operating systems: the OSEK-conformant osCAN and the AUTOSAR-conformant MICROSAR OS. Furthermore, CANbedded communication software for CAN and LIN is available-as well as a Flash Bootloader-since this is required in most modern automotive applications. Our embedded software is preferred by a large number of automotive OEMs."
"One of the critical requirements for using embedded processors in the automotive market is the availability of effective and well-supported communication software. The high-quality product portfolio of Vector's CAN and LIN stacks make this company an ideal partner for Atmel's 32-bit automotive microcontroller product line," said Stephan Thaler, MCU marketing manager, Atmel Automotive Business Unit.
The UC3C family also embeds a time division multiplexed inter-IC sound controller (I2S), an Ethernet MAC 10/100Mps interface and a USB 2.0 interface. With an embedded flash vault code protection-a flash security technology that allows the on-chip flash to be partially programmed and locked-the device offers a secure on-chip storage for secret code and software intellectual property. These features also allow the device to carry valuable software from a trusted location to another location where the rest of the source code can be developed, debugged and programmed.
The new UC3C series has up to 512KB embedded flash, with 10,000 write cycles and 15-year data retention. It is possible to lock selected regions of the flash to secure the embedded software. The UC3C also has up to 64KB of embedded SRAM. The devices are designed for 3.0 - 5.5V operation with a true 5V operation, qualified as automotive-grade 1 products supporting a temperature range from -40°C to +125°C.
Atmel has also announced a new development tools for its 8- and 32-bit AVR embedded microcontrollers (MCUs). The new Atmel AVR Studio 5 is an enhanced version of the popular Atmel Integrated Development Environment (IDE) with support for all 8- and 32-bit AVR MCUs.
Atmel says AVR Studio 5 makes editing and debugging source code easier by seamlessly bringing together an editor with assisted code writing, a wizard for quickly creating new projects, an AVR Software Framework source code library, a GNU C/C++ Compiler, a powerful simulator, and a front-end visualizer for all of Atmel's AVR programmers and in-circuit debuggers.
Package: 144-pin LQFP, 100-pin QFP, 64-pin QFP and QFN packages
Availability: Now
Price: Each USD $5.83 for quantities of 10,000
To find more about the Atmel AVR UC3 microcontrollers visit www.atmel.com/UC3