The newest member of the RE01 Group lineup is a 256 kilobytes (KB) flash memory variant in addition to the 1.5 megabytes (MB) flash memory embedded controller, already in mass production.

Featuring a minimum 3.16 mm × 2.88 mm package size, the new embedded controller is optimized for use in more compact product designs in IoT devices for sensor control, for applications such as smart homes, smart buildings, environmental sensing, structure monitoring, trackers, and wearable devices.

The embedded controller received a certified EEMBC ULPMark-CoreProfile (CP) score of 705, verifying its world’s top-class energy efficiency (Note 1). This high score was achieved through the use of Renesas’ proprietary SOTB process technology, which enables extreme reduction in both active and standby current consumption.

The embedded controller features current consumption as low as 25 μA/MHz during operation and 400 nA during standby, placing it among the world’s leaders in ultra-low current consumption.

Customers can further reduce operation current consumption to 12 μA/MHz by using Renesas’ ultra-low Iq ISL9123 as an external step-down regulator.

RE Family embedded controllers can extend the battery life of embedded devices. They are also capable of high-speed operation in applications that require real-time data processing from multiple sensors, even when powered by compact batteries with very small current output or by energy harvesting devices.

Key features of the new RE01 Group R7F0E01182xxx:

Arm Cortex®-M0+ core with maximum operating frequency of 64 MHz 256 KB flash memory and 128 KB SRAM

Operating current: 25 µA/MHz (when using on-chip LDO), 12 µA/MHz (when using external DC/DC converter)

Software standby: 400 nA Operating voltage range: 1.62V – 3.6V with high-speed operation of up to 64 MHz from 1.62V

Package lineup: approx. 3 mm square 72-pin WLBGA, 7 mm square 56-pin QFN, 14 mm square 100-pin and 10 mm square 64-pin LQFP

On-chip energy harvesting control circuit (fast boot condenser charging, secondary battery charge protection functionality)

Approximately 4 µA ultra-low power-consumption and 14-bit A/D converter

Support for flash programming on approximately 0.6 mA of power

Robust security functions using Trusted Secure IP core

Deep standby with real-time clock (RTC) operating 380 nA at 1.8V