32-bit RX microcontroller accelerates data rates for industrial sensor systems
Renesas Electronics has expanded its 32-bit microcontroller portfolio with a new RX device for industrial sensor systems. The RX23E-B, is a 32-bit device from the RX family and features a high-precision analogue front end (AFE), specifically designed for systems that demand fast and accurate analogue signal measurements.
The new microcontroller integrates a 24-bit delta-sigma ADC capable of achieving a conversion speed of up to 125ksamples per second which is eight times faster than the existing RX23E-A. It can process accurate ADC while reducing RMS noise to 1/3 (0.18µVrms at 1ksample per second compared to the RX23E-A.
The RX23E-B facilitates faster and more precise measurements of critical parameters such as strain, temperature, pressure, flow rate, current and voltage, making it suitable for high-end sensor devices, measuring instruments, and test equipment. It also has sufficient performance to drive force sensors used in industrial robots, which often demand measurements as fast as 10 microseconds (100,000 samples per second). The microcontroller also reduces overall system size and the component count by incorporating the analogue front end and the microcontroller on a single chip.
Similar to the RX23E-A, the RX23E-B incorporates a 32MHz RXv2-based CPU with DSP instructions and a floating point unit. It also combines the analogue front end into a single chip using the same fabrication process. There are new peripheral functions such as a 16-bit DAC, which enables measurement adjustments, self-diagnosis, and analogue signal output. The device’s +/-10V analogue input enables +/-10V measurement with a 5V power supply without requiring external components or additional power supply. An LCD controller with a maximum of 40 SEG x 4 COM and a real-time clock (RTC) function are also included.
The RX23E-B is available in two versions, one that supports an ADC data rate of up to 125ksamples per second and one that supports up to 31.25ksamples per second. Both offer flexible data rate settings ranging from 3.8 SPS to the maximum value, allowing users to choose the best balance between data rate and noise for their specific system requirements.
The microcontroller is available in a 5.5mm square, 100-pin BGA package and a 6.0mm square 40-pin QFN package. There are also wide pin packages ranging from 48- to 100-pin options.
The RX23E-B is available now, along with a Renesas Solution Starter Kit for RX23E-B.
