Ultra-low power 16-bit flash MCU from Epson

Seiko Epson Corporation (Epson) has announced that it has developed and begun shipping samples of S1C17W18, a 16-bit flash microcontroller (MCU) from its S1C17W00 series. The MCU is said to operate at 1.2V and is capable of driving 352 segment displays while achieving 40% less current consumption in operating mode than previous 16-bit MCUs from the S1C17W00 series.

MCUs from Epson’s S1C17W00 series can operate on a small, low-capacity button battery and can be connected to a variety of sensors suiting them for mobile applications. Target applications for the new 16-bit MCU are high-performance small portable electronic devices.

The S1C17W18’s Flash memory size and RAM size are claimed to be double that of the S1C17W15 and LCD driver capability of up to 352 segments is around 1.4 times more than the capability of the S1C17W15. The S1C17W18 is also said to consume 150µA/MHz current in RUN mode and 0.15µA in SLEEP mode.

To achieve this level of current consumption Epson developed a 128kByte flash memory which can be rewritten on a single 3V power supply. Built-in oscillator circuits can output seven different frequencies, eliminating the need for external oscillators which reduces total part counts and costs and saves board space.