The A89211/A89212 is a high-performance MCU designed for advanced standalone three-phase BLDC and PMSM motor control applications. It operates on a supply voltage range from 5.5V to 60V (A89211) or 5.5V to 90V (A89212) and features a 32-bit ARM Cortex-M4 CPU core running at up to 40 MHz, delivering up to 50 MIPS performance. The device integrates a three-phase gate driver and precision current sense capability.
On-chip memory includes up to 252 kB flash, 32 kB DRAM, 8 kB IRAM, and 32 kB boot ROM. A built-in charge pump regulator supplies the MOSFET gate drive for battery voltages as low as 7V to enable operation with a reduced gate drive voltage of 5.5V. The integrated power management unit manages all internal supplies from a single input and offers programmable diagnostics for multiple fault conditions, including VDS, UVLO and thermal shutdown.
The A89211/12 is pin-to-pin compatible and ideal for hardware- and software-scalable applications such as cordless power tools, e-bikes and battery-powered BLDC motor modules. It comes in a 48-pin 7 mm x 7 mm QFN package with an exposed thermal pad.
