Low-Power S1JA MCUs feature integrated programmable analogue

November 27, 2018 // By Ally Winning
Renesas has expanded its Synergy S1 MCU range by adding the S1JA MCU series of ultra-low-power MCUs with a 48 MHz Arm Cortex-M23 core and integrate programmable analogue and security functions.

The new S1JA range has five MCUs with up to 256 KB Flash, up to 32 KB SRAM, and an operating voltage range of 1.6V to 5.5V. Each MCU integrates a sensor-biasing unit that supplies accurate power to the external sensor, and a configurable analogue fabric to process algorithms to maximise signal conditioning and precise analogue measurements.

The analogue components on-chip include a high accuracy 16-bit ADC, 24-bit sigma-delta ADC, fast response 12-bit DAC, rail-to-rail low-offset operational amplifiers, and high-speed/low-power comparators. The S1JA MCUs enable advanced analogue configurations from basic functions to more complex analogue blocks. Capacitive touch enable pins allows the development of touch button HMI interfaces, and the S1JA’s memory mirror function enables OTA updates.

Ultra-low power allows the S1JA MCUs to extend battery life, with standby mode consuming only 500nA. In addition, the S1JA’s integrated AES cryptography accelerator, True Random Number Generator (TRNG) and memory protection units can help develop a secure cloud connection. The Renesas Synergy Software Package (SSP) supports the S1JA MCUs with HAL drivers, application frameworks and RTOS. The SSP also includes six new modules that simplify interconnecting the configurable internal analogue blocks. Embedded system designers can use e² studio or IAR Embedded Workbench to build and customise designs.

The S1JA Group MCUs can be combined with the ultra-low noise ISL21090B25 precision voltage reference and ISL32485E 5V differential RS-485/RS-422 transceiver to create high precision, ruggedised industrial sensor applications.

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