Called RA2T1, the “devices are specifically designed for single-motor applications such as fans, power tools, vacuum cleaners, refrigerators, printers and hair dryers”, it said.
Peripherals include a three-channel sample-and-hold to simultaneously measure phase current in brushless dc motors, and pulse-width modulators that can insert dead-times and produce asymmetric complementary waveforms.
Safety features include a fast way to lock PWMs to a known state during over-current – by incorporating high-speed comparators, port output control and a way to store the desired safe output state.
Further reliability enhancing functions are self-diagnosis on the 12bit ADC, SRAM parity error check, clock frequency accuracy measurement and illegal memory access detection.
Memories include up to 64kbyte of instruction flash, 2kbyte data flash and 8kbyte sram.
Operation is over 1.6 to 5.5V, and -40 to +125°C.
Package options are: LQFP (48 or 32pad), or QFN (48, 32 or 24 pad).
Supporting software includes multiple RTOS, a board support package, peripheral drivers, middleware, security stacks and reference designs for AI, motor control and cloud solutions.
“It allows customers to integrate their own legacy code and choice of RTOS,” said Renesas. “Using the software will ease migration of motor control designs.”
The company has a number of other motor control MCU: found within in its 16bit RL78, 32bit RX and 64bit RZ families.
Find the RA2T1 MCUs on this Renesas web page
Allegro Microsystems recently picked a 40MHz Arm Cortex-M4 as the processing heart of a stand-alone three-phase automotive brushless motor driver IC
