S3A3 datasheet(10/139 Pages) RENESAS

10 / 139 page

R01DS0307EU0100 Rev.1.00

Page 10 of 139

Mar 7, 2017

S3A3

1. Overview

Table 1.10

Human machine interfaces

Feature

Functional description

Segment LCD Controller (SLCDC)

The SLCDC provides the following functions:

 Waveform A or B selectable

 The LCD driver voltage generator can switch between an internal voltage boosting method,

a capacitor split method, and an external resistance division method

 Automatic output of segment and common signals based on automatic display data register

read

 The reference voltage generated when operating the voltage boost circuit can be selected in

16 steps (contrast adjustment)

 The LCD can be made to blink.

See section 48, Segment LCD Controller (SLCDC) in User's Manual.

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 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 conductor so that a finger

does not come into direct contact with the electrode. See section 44, Capacitive Touch

Sensing Unit (CTSU) in User's Manual.

Table 1.11

Data processing

Feature

Functional description

Cyclic Redundancy Check (CRC)

Calculator

The Cyclic Redundancy Check (CRC) 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 generation 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 34,

Cyclic Redundancy Check (CRC) Calculator in User's Manual.

Data Operation Circuit (DOC)

The Data Operation Circuit (DOC) compares, adds, and subtracts 16-bit data. See section 45,

Data Operation Circuit (DOC) in User's Manual.

Table 1.12

Security

Feature

Functional description

Secure Crypto Engine 5 (SCE5)

 Security algorithm:

- Symmetric algorithm: AES

 Other support features:

- TRNG (True Random Number Generator)

- Hash-value generation: GHASH.

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