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Seiko Epson Corporation ("Epson", TSE: 6724) has announced
that it has developed and begun shipping samples of the S1C17706, a 16-bit
microcontroller capable of 5120-dot high-resolution display, the largest display area of
Epson’s 16-bit S1C17700 microcontroller series.

Recently, there is a growing demand for displays having outstanding user interface even for such
applications as high-performance watches or small portable game devices that are powered by
coin batteries. In order to achieve higher quality, more vivid images, the S1C17706 features a
5120-dot LCD driver, a 4 grayscale display that makes it possible to display anti-aliased
images＊1, and built-in 1 MB flash ROM that enables it to store large volumes of display contents.
By incorporating these functions on a single chip, Epson has achieved a microcontroller that
consumes only one-fifth of the power used by previous configurations＊2, making the S1C17706
ideal for applications that run on small batteries.

The S1C17706 IC has the highest resolution and highest-capacity flash memory within the
S1C17700 series, a line-up which features a low-power consumption 16-bit microcontroller with a
dot matrix LCD driver. While Epson’s previous MCU models use only black-and-white binary
images, the S1C17706 is able to add half-tone values with its 4 grayscale control circuit, thereby
greatly improving the power of expression in addition to achieving high resolution. Furthermore,
its high-capacity built-in 1 MB flash memory enables it to store display data such as character
sets as well as complex software without the need for external memory.

Special features of the S1C17706

1. Largest LCD display of the S1C17700 series; greater expressive ability with 4 grayscale
display

• 5120 (160 x 32) dot display. 64 x 64 dot display also possible through use of emulated
  64-common mode
• 4 grayscale display
• Equipped with frame memory for display, and LCD driver voltage generator circuit
• Contrast adjustment possible via software
• Equipped with n-line inversion function to reduce crosstalk
• Equipped with partial display function that achieves low power consumption through nondisplay
  of discretionary common lines
• High-capacity built-in flash memory
• On-chip 1MB flash memory
• Gold bumped wafers allow chip-on-film (COF) and other low profile packages
• Gold bumped wafers are the standard product for delivery
• Also available as bare chip and QFP22-256 package

2. Wide range of peripheral equipment

• A/D converter: 10-bit resolution, 8ch
• R/F converter: 24-bit counter, DC/AC drive switch, 2ch
• Real-Time Clock: Counter for years (takes into account leap years), days of the week,
  dates, hours, minutes, and seconds; with 30-second correction function, 1ch
• Various timer circuits, and serial interface support

3. Low power consumption

• Sleep state: 1.2 uA (typical @ 3V)
• LCD driver in use: 9.7 uA (typical @ 3V, no panel load, when display is fully lit)

*1 Anti-aliasing is a process used for creating a smooth appearance by eliminating the jagged
edges of an image by placing intermediate colour values at the boundaries of the background
colours and the image.
*2 Compared with previous Epson models.