Epson’s new 16-bit microcontroller features small size and low power consumption equivalent to an 8-bit microcontroller, even with the 16MB address space.
The S1C17 family of original 16-bit MCUs integrate a wide variety of interfaces, allowing connection with multiple sensors and a wealth of peripheral circuits such as an LCD controller and driver supporting low to medium-level resolutions.
The S1C17 family microcontroller has RISC architecture to achieve high-speed operation and low power consumption, making it ideal for mobile devices.
The family includes a rich lineup of built-in Flash ROM products.
The high quality development environment and on-chip ICE function also contribute to shorten design turnaround time.
For more information on microcontrollers such as information on development tools, sample software and application notes, visit the MCU Users' Site.
Product lineup
Related information
Application examples
Microcontroller development tools
Technical information

The RISC MCU has realized the advance processing as Max.48MHz operation just like 32-bit MCU.
It is suitable for healthcare, home appliance and portable device by integrated LCD controller, USB, A/D converter, wide variety of I/F such as SPI, I2S etc.
| Status | Download | Series name | Display | Memory | ||||
LCD drive |
LCD controller |
Flash*9 | ROM | RAM | ||||
| MP | 5,187kb |
97kb |
S1C17801 | - | ○STN:~4bpp | 128KB |
- | 6KB |
| MP | 7,470kb |
165kb |
S1C17803 | - | ○STN:~4bpp | 128KB | - | 16KB |
*9: This product uses SuperFlash® technology licensed from Silicon Storage
Technology, Inc.
Microcontrollers with built-in flash ROM, RAM, A/D converter and sensor interface.
The small-sized packages are ideal for space-constrained products embedded with a sensor system.
*9: This product uses SuperFlash® technology licensed from Silicon Storage Technology, Inc.
The RISC MCU integrates Flash ROM, RAM, dot matrix LCD driver, remote controller circuit, wide variety of I/F and timer function.
This features low power consumption just like 4-bit/8-bit MCU. It is suitable for battery-driven portable device with display such as sports watch, remote controller.
*3: This product uses SuperFlash® technology licensed from Silicon Storage
Technology, Inc.
*5: Executes 1 instruction/1.5 clock
This is low power consumption MCU that integrates Flash ROM, RAM, LCD driver, wide variety of I/F and timer function.
This features low power consumption just like 4-bit/8-bit MCU. It is suitable for battery-driven portable device, healthcare, measure instruments.
*3: This product uses SuperFlash® technology licensed from Silicon Storage
Technology, Inc.
This is low power consumption MCU that integrates ROM, RAM, remote controller circuit, wide variety of I/F and timer function.
This features low power consumption and price just like 4-bit/8-bit MCU. It is suitable for portable device built-in sensor system.
Please contact your Epson representative for products whose manuals/technical documents are not listed.




The S5U1C17705T1100 (SVT17705: Software Evaluation Tool for S1C17705) is an evaluation board for the S1C17705 MCU. It includes support for ANT ULP wireless connectivity. ANT is the leading ultra-low power wireless solution available and when combined with the S1C17 MCU, it enables rapid development of state of the art products.
Click the blue box below to access the free Startup Guide for the S1C17 family microcontroller development environment.
Contents
Chapter 1: Development Environment
Three kinds of software development, Software development tools, Hardware development tools, and Epson’s evaluation boards with S1C17 Family MCU
Chapter 2: Create Development Environment
Install the Compiler Package, Connect the board, and Install the USB driver
Chapter 3: Steps for Software Development
From project creation to debugging. It is recommended to read through Chapter 3 while actually operating the tool for a better understanding.
Free Compiler Package is downloadable from the S1C17 Family software listed in the MCU users’ site.
(Compiler Package and sample source files are required.)
Sample source files are also downloadable in Chapter 3 of the Startup Guide.
They are also available from here.
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