S128 Datasheet, PDF (9/107 Pages) Renesas Technology Corp – Microcontroller

S128
1. Overview
Table 1.9
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 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 39, Capacitive Touch
Sensing Unit (CTSU) in User’s Manual.
Table 1.10 Data processing
Feature
Cyclic Redundancy Check (CRC)
Calculator
Data Operation Circuit (DOC)
Functional description
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 32,
Cyclic Redundancy Check (CRC) Calculator in User’s Manual.
The Data Operation Circuit (DOC) compares, adds, and subtracts 16-bit data. See section 40,
Data Operation Circuit (DOC) in User’s Manual.
Table 1.11 Security
Feature
AES Engine
True Random Number Generator
(TRNG)
Functional description
See section 43, AES Engine in User’s Manual
See section 44, True Random Number Generator (TRNG) in User’s Manual
R01DS0309EU0100 Rev.1.00
Mar 10, 2017
Page 9 of 107