New MCU family delivers cost-effective digital control to reduce energy footprint
Digital power control applications require a balance of high performance and high resolution while meeting stringent power consumption and cost criteria. Previously, to serve these digital power applications, engineers have used dedicated DSP or application specific devices that hit the power/performance balance, but are often more complex and costly to design in. Further, these devices provide less flexibility, a limited range of products to chose from, and require specific tools and software compared with a general purpose MCU.
The combination of advanced analog, processing power, high-resolution capability and integrated timer functions make the new RX62G MCUs ideal to implement high-accuracy digital control for inverters/converters, power management and digital power supply, such as power systems and general-purpose server power. By enabling complex algorithms and high-precision control at an affordable cost, the RX62G series enables higher efficiency in these types of power control applications, helping to reduce their carbon footprints.
The new MCUs expand on the advanced analog and control features of the RX62T and RX63T devices, delivering more efficient power consumption and performance. The new MCUs are also pin-compatible with the RX62T series, and software compatible with other members of the RX600 family, which offers greater scalability options for embedded engineers working with changing design requirements or on a variety of applications.
The new MCUs operate at 100 MHz delivering constant 1.65 DMips/MHz to provide maximum power efficiency when operated at lower speeds and outstanding performance at higher speed. Integrated DSP instruction and FPU enable efficient implementation of complex algorithms and control loops. The single-precision FPU offloads the RX CPU and simplifies decimal-point calculations, boosting overall processing performance and simplifying firmware development. With an embedded flash that works at CPU speed with no wait state, the RX62G delivers a real-time performance 165 DMips at 100 MHz in a pure deterministic manner.
The new series also feature four high-resolution timers capable of generating PWM signals with 312.5 ps resolution needed to control power bridges to deliver maximum efficiency and lower power losses. Similar to the RX62T MCUs, the RX62G devices feature two 12-bit A/D converter units and one 10-bit A/D converter unit that can capture analog input values from up to 20 channels at a minimum conversion time of 1 μs. Each of the A/D units can be triggered by timer units and can sample three phases in parallel. The RX62G MCUs also integrate a new 16-bit general-purpose pulse-width-modulation timer (GPT), and MTU3 multifunction timer-pulse units specialized for motor control. With this combination, one RX62G MCU can control up to three 3-phase motors simultaneously.
Availability
Samples of the RX62GMCU are available now. The RX62G MCU will be available in two memory configurations –256KB flash/16KB SRAM/ 32KB data flash and 128KB flash/8KB SRAM/8KB data flash, and 2 package variations – LQFP100 14×14 and LQFP112 20×20. The RX62G MCU is also available with or without CAN channels.
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