Low-power 32-bit MCUs in the Renesas RA4L1 group integrate a segment LCD controller, capacitive touch sensing unit, and robust security. Based on an 80-MHz Arm Cortex-M33 processor with TrustZone support, the MCUs can be used for metering, IoT sensing, smart locks, and home appliances.
RA4L1 microcontrollers operate down to 1.6 V, consuming 168 µA/MHz when active and just 1.70 µA in standby mode with all SRAM retained. The series, which comprises 14 devices, offers 256 KB or 512 KB of dual-bank code flash, 64 KB of SRAM, and 8 KB of data flash. They provide a variety of peripherals and a wide range of communication interfaces.
In addition to Arm Trust Zone, the MCUs feature Renesas Secure IP (RSIP-E11A) supporting AES, ECC, hash value generation, and a 128-bit unique ID. They offer up to three tamper pins and secure pin multiplexing. The devices come in a variety of small packages, including a 3.64×4.28-mm WLCSP.
The RA4L1 MCUs, along with an evaluation board and capacitive touch starter kit, are available now. Samples and kits can be ordered from the Renesas website or distributors.
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