S7G2 datasheet(7/117 Pages) RENESAS

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R01DS0262EU0150 Rev.1.50

Page 7 of 117

Sep 24, 2025

S7G2 Datasheet

1. Overview

Table 1.10

Human machine interfaces

Feature

Functional description

Capacitive Touch Sensing Unit

(CTSU)

The Capacitive Touch Sensing Unit (CTSU) measures the electrostatic capacitance of the

touch sensor. Changes in the electrostatic capacitance are determined by the software, which

enables the CTSU to detect whether a finger is in contact with the touch sensor. The electrode

surface of the touch sensor is usually enclosed with an electrical insulator so that fingers do

not come into direct contact with the electrodes. See section 51, Capacitive Touch Sensing

Unit (CTSU) in Userʼs Manual.

Table 1.11

Graphics

Feature

Functional description

Graphics LCD Controller (GLCDC)

The Graphics LCD Controller (GLCDC) provides multiple functions and supports various data

formats and panels. Key GLCDC features include:

 GPX bus master function for accessing graphics data

 Superimposition of three planes (single color background plane, graphic 1 plane, and

graphic 2 plane)

 Support for many types of 32-bit or 16-bit per pixel graphics data and 8-bit, 4-bit, or 1-bit LUT

data format

 Digital interface signal output supporting a video image size of WVGA or greater.

See section 58, Graphics LCD Controller (GLCDC) in Userʼs Manual.

2D Drawing Engine (DRW)

The 2D Drawing Engine (DRW) provides flexible functions that can support almost any object

geometry rather than being bound to only a few specific geometries such as lines, triangles, or

circles. The edges of every object can be independently blurred or antialiased.

Rasterization is executed at one pixel per clock on the bounding box of the object from left to

right and top to bottom. The DRW can also raster from bottom to top to optimize the

performance in certain cases. In addition, optimization methods are available to avoid

rasterization of many empty pixels of the bounding box.

The distances to the edges of the object are calculated by a set of edge equations for every

pixel of the bounding box. These edge equations can be combined to describe the entire

object.

If a pixel is inside the object, it is selected for rendering. If it is outside, it is discarded. If it is on

the edge, an alpha value can be chosen proportional to the distance of the pixel to the nearest

edge for antialiasing.

Every pixel that is selected for rendering can be textured. The resulting aRGB quadruple can

be modified by a general raster operation approach independently for each of the four

channels. The aRGB quadruples can then be blended with one of the multiple blend modes of

the DRW.

The DRW provides two inputs (texture read and framebuffer read), and one output

(framebuffer write).

The internal color format is always aRGB (8888). The color formats from the inputs are

converted to the internal format on read and a conversion back is made on write.

See section 56, 2D Drawing Engine (DRW) in Userʼs Manual.

JPEG Codec (JPEG)

The JPEG Codec (JPEG) incorporates a JPEG codec that conforms to the JPEG baseline

compression and decompression standard. This provides high-speed compression of image

data and high-speed decoding of JPEG data. See section 57, JPEG Codec in Userʼs Manual.

Parallel Data Capture (PDC) unit

One Parallel Data Capture (PDC) unit is provided for communicating with external I/O devices,

including image sensors, and transferring parallel data such as an image output from the

external I/O device through the DTC or DMAC to the on-chip SRAM and external address

spaces (the CS and SDRAM areas). See section 44, Parallel Data Capture Unit (PDC) in

Userʼs Manual.

Table 1.12

Data processing (1 of 2)

Feature

Functional description

Cyclic Redundancy Check (CRC)

calculator

The Cyclic Redundancy Check (CRC) calculator generates CRC codes to detect errors in the

data. The bit order of CRC calculation results can be switched for LSB-first or MSB-first

communication. Additionally, various CRC-generating polynomials are available. The snoop

function allows monitoring reads from and writes to specific addresses. This function is useful

in applications that require CRC code to be generated automatically in certain events, such as

monitoring writes to the serial transmit buffer and reads from the serial receive buffer. See

section 40, Cyclic Redundancy Check (CRC) Calculator in Userʼs Manual.

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