Renesas fast waking 32bit micro made on zero wait state flash process

Renesas has introduced fast waking 32bit microcontrollers made on low power zero wait state flash process.

Called RX111, the devices include USB 2.0 support for host, device, on-the-go (OTG), and battery charging.

There are multiple modes to trade off performance and power. For example, there is a 100µA/MHz run mode, and 350nA software stand-by from which it can wake in 4.8µs.

Flash will erase and write down to 1.8V, with 1kbyte erase block size and background operation (BGO). Erase times can be as low as 10ms per block.

Clocking is at 32MHz and throughput is up to 1.56Dmips/MHz.

“Power consumption is as low as 64µA/Dmips and the MCUs also achieve 3.08CoreMark/MHz and 14.9CoreMark/mA,” said Renesas.

For communication, I2C and SPI are available alongside USB, and analogue functions include a 12bit ADC with internal voltage reference, an 8bit DAC, and a temperature sensor.

Hardware safety features include cyclic redundancy checks (CRCs), a clock accuracy circuit (CAC) and a watch dog timer. Then there is a motor control timer (MTU2) and I/O ports.

Pin counts span 36 to 64 and there is 16 to 128kbyte of embedded flash with more to come.

Samples are planned for July and mass production is scheduled to begin in September.

Applications are expected in mobile healthcare, smart meters, sensors, detectors, industrial automation, and building automation.

The RX111 family is software compatible with RX600 and RX200 microcontrollers, said Renesas, which has its own Eclipse-based integrated development environment, as well as compilers, debugger emulators, code generation and flash programmers.

Its starter kit has sample drivers (mass storage class, communication class and HID class), applications (high-speed charging by USB), middleware (such as memory card), an evaluation board, and a development environment for evaluation and first installation.

IAR Systems is also supporting the devices, with its Embedded Workbench EWRX tool chain compiler and IDE. “We provide a free 64kbyte-limited version of the tools,” said IAR.

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