MCU with enhanced memory function and IoT low power consumption
Overview
In December 2020, Renesas Electronics Corporation began mass production of the [RA4M3] Group, which expanded the company’s 32-bit Arm microcomputer [RA] family and enhanced memory functions. Support the development of a wide range of IoT (Internet of Things) devices such as industrial equipment, air-conditioning equipment, and meters.
RA4M3 Group adopts the [Cortex-M33] core of Arm v8-M architecture, with a maximum operating frequency of 100 MHz. Equipped with up to 1M bytes of flash memory, up to 128K bytes of RAM, 8K bytes of data flash memory and 1K bytes of spare SRAM. It corresponds to the background operation and boot swap function of flash memory, and the built-in RAM has parity check (error detection) and ECC (error correction) functions.
Operating current in Active Mode is 119µA/MHz
Relying on the flash memory, the operating current is 119µA/MHz in the active mode of CoreMark, and 1.6 mA in the standby mode. The wake-up time is 30 microseconds, which can be used for a long time through intermittent movements.
Arm TrustZone technology is combined with the Renesas crypto engine [Secure Crypto Engine] to provide multiple symmetric and asymmetric cryptographic accelerators, advanced key management, security life cycle management, tamper detection, high side attack resistance and other security functions.
In addition, various interfaces such as capacitive touch sensing function and Quad SPI are also equipped. The size of the 64-pin LQFP is 10x10 mm, the 100-pin LQFP is 14x14 mm, and the 144-pin LQFP package is 20x20 mm.