Epson now shipping samples of a new 16-bit microcontroller that offers low power and precise resistance measurement

Epson has developed and begun shipping samples of the S1C17W11, a new 16-bit microcontroller featuring low power consumption and high-precision resistance measurement capabilities.

S1C17W11
P-VQFN048-0707-0.50

The growing aging population, expansion of home healthcare, increasing demand for environmental monitoring and global efforts to achieve the Sustainable Development Goals are fuelling the need for battery-powered personal healthcare devices and compact measurement instruments capable of long-term operation. 

These devices must offer high measurement accuracy and an extended operating life while being compact and affordable. Conventional designs that combine a general-purpose microcontroller with external analogue and display circuits have higher parts counts and consume more power, costing more time and money for design, evaluation and mass production.

To address these challenges, Epson developed the S1C17W11, a single-chip microcontroller that integrates Epson's proprietary low-power technology, measurement circuits including a CR oscillator-based A/D converter (RFC)1 and display and interface functions. 

This integration reduces the number of external components, enabling smaller devices that consume less power while also saving users time and effort for evaluation and development.

Epson will continue to address diverse social challenges and contribute to building a sustainable society by delivering energy-saving, highly reliable microdevices based on its efficient, compact, and precise technologies.
Product Features
1. CR oscillator-based high-precision A/D converter (RFC)
By converting resistance values into frequency and measuring that frequency with a high-precision counter2 equivalent to 24 bits, the device supports enhanced accuracy for sensing applications that rely on resistance, such as thermometers and water quality meters.
2. Energy-efficient design
Low standby current (109nA Typ.) in SLEEP mode enables long-life operation. The device, which is designed to run on an LR41 button cell or other small battery, requires only infrequent battery replacement.
3. Built-in display and notification circuits
The built-in LCD driver (20 SEG × 1-4 COM) reduces the need for external LCD driving circuits. The microcontroller also incorporates a voltage booster circuit (CHREG)3 for driving a buzzer or LED, eliminating the external circuitry required in previous products. This enables a louder buzzer and brighter LED, ensuring reliable user notifications even when covered or in noisy environments.
4. Memory security features
The device is equipped with built-in Flash (48 KB) and EEPROM4 (128 B), enabling storage of calibration data and measurement history. Supports on-board rewriting and improved maintainability.

Target Applications
Thermometers, non-contact/contact biometric devices, portable water/salinity meters, food and beverage inspection terminals, industrial handheld measuring instruments, and IoT sensor devices.

Please see the link below for further product details.
https://global.epson.com/products_and_drivers/semicon/products/micro_controller/16bit/#ac08
 

For requests and inquiries regarding microcontroller-related materials, please refer to the following page (by requesting materials, you will be able to download microcontroller-related documents).
https://global.epson.com/products_and_drivers/semicon/offer/mcu.html

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1A measurement circuit that converts resistance changes into oscillation frequency and compares the difference between the measurement oscillator and the reference oscillator, enabling high-precision measurement equivalent to up to 24 bits with ease.

2A circuit that measures frequency with high precision by counting pulses (oscillation frequency) output from the oscillator within a fixed time interval.

3Previously, the applied voltage was limited to the supply voltage VDD (approximately 3.6V max), but this circuit boosts VDD to generate up to 5.0V, enabling higher-output drive for buzzers and LEDs.

4A type of non-volatile memory that allows data to be electrically rewritten and erased, while retaining data even when the power is turned off.

Ends

About Epson, Epson Australia and Epson New Zealand
Epson is a global technology leader whose philosophy of efficient, compact and precise innovation enriches lives and helps create a better world. The company is focused on solving societal issues through innovations in home and office printing, commercial and industrial printing, manufacturing, visual and lifestyle. Epson's goal is to become carbon negative and eliminate use of exhaustible underground resources such as oil and metal by 2050. Led by the Japan-based Seiko Epson Corporation, the worldwide Epson Group generates annual sales of more than JPY 1 trillion.
https://corporate.epson/en

Epson Australia offers an extensive array of award-winning image capture and image output products for the commercial, industrial, consumer, business, photography and graphic arts markets, and is also a leading supplier of value-added point-of-sale (POS) solutions for the retail market. Epson is the market leader in Australia and worldwide in sales of projectors for the home, office and education. Established in 1983 Epson Australia is headquartered in North Sydney, NSW and is a subsidiary of the Epson Group headquartered in Japan.

www.epson.com.au

Epson New Zealand offers an extensive array of award-winning image capture and image output products for the commercial, industrial, consumer, business, photography and graphic arts markets, and is also a leading supplier of value-added point-of-sale (POS) solutions for the retail market. Epson is a market leader in New Zealand, Australia and worldwide in sales of projectors for the home, office and education. Epson New Zealand is headquartered in Auckland and is a branch of Epson Australia Pty Limited, a subsidiary of the Epson Group headquartered in Japan.
www.epson.co.nz