The RX231 32-bit microcontrollers are based on a new version of the RX CPU core with a performance benchmark score of 4.16 CoreMark/MHz, which is a 35% increase on the previous generation RX200 series.
With operating speeds of 54MHz, there is an approximate increases of up to x4 in DSP performance and x6 in FPU performance, which will help in digital filtering applications.
Operating power consumption has been reduced by 10%. It draws 120µA/MHz when the CPU is active with peripherals off. Standby is 0.8μA, approximately half the level of previous generations.
The RX231 MCUs can recover from standby mode in a minimum of 5 µs, which makes it possible to reduce current loss during the recovery and allow the application to react quickly to external events.
Applications can be executed from flash after this time, and analog functions, such as the analog-to-digital converter, are available for use.
Target applications are industrial sensors, healthcare devices, and wearable devices, and building automation devices such as thermostats.
The on-chip timer consumes an additional 0.4µA and allows the user to program the device to wake up from the low power modes.
Another feature is support for up to 24 touch keys for self-capacitance mode and up to 144 keys for mutual capacitance mode.
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