S3A3 datasheet(9/139 Pages) RENESAS

9 / 139 page

R01DS0307EU0100 Rev.1.00

Page 9 of 139

Mar 7, 2017

S3A3

1. Overview

Controller Area Network (CAN)

Module

The Controller Area Network (CAN) module provides functionality to receive and transmit data

using a message-based protocol between multiple slaves and masters in electromagnetically

noisy applications.

The CAN module complies with the ISO 11898-1 (CAN 2.0A/CAN 2.0B) standard and supports

up to 32 mailboxes, which can be configured for transmission or reception in normal mailbox

and FIFO modes. Both standard (11-bit) and extended (29-bit) messaging formats are

supported. See section 31, Controller Area Network (CAN) Module in User's Manual.

USB 2.0 Full-Speed Module (USBFS) The USBFS is a USB controller that is equipped to operate as a host controller or device

controller. The module supports full-speed and low-speed (only for the host controller) transfer

as defined in the Universal Serial Bus Specification 2.0. The module has an internal USB

transceiver and supports all of the transfer types defined in the Universal Serial Bus

Specification 2.0. The USB has buffer memory for data transfer, providing a maximum of 10

pipes. PIPE1 to PIPE9 can be assigned any endpoint number based on the peripheral devices

used for communication or based on the user system.

The MCU supports revision 1.2 of the Battery Charging Specification. Because the MCU can

be powered at 5 V, the USB LDO regulator provides the internal USB transceiver power supply

at 3.3 V. See section 28, USB 2.0 Full-Speed Module (USBFS) in User's Manual.

SD/MMC Host Interface (SDHI)

The Secure Digital Host Interface (SDHI) and MultiMediaCard (MMC) interface provide the

functionality needed to connect a variety of external memory cards to the MCU. The SDHI

supports both 1-bit and 4-bit buses for connecting different memory cards that support SD,

SDHC, and SDXC formats. When developing host devices that are compliant with the SD

specifications, you must comply with the SD Host/Ancillary Product License Agreement (SD

HALA).

The MMC interface supports 1-bit, 4-bit, and 8-bit MMC buses that provide eMMC 4.51

(JEDEC Standard JESD 84-B451) device access. This interface also provides backward

compatibility and support for high-speed SDR transfer modes. See section 36, SD/MMC Host

Interface (SDHI) in User's Manual.

Table 1.9

Analog

Feature

Functional description

14-bit A/D Converter (ADC14)

A 14-bit successive approximation A/D converter is provided. Up to 28 analog input channels

are selectable. Temperature sensor output and internal reference voltage are selectable for

conversion. The A/D conversion accuracy is selectable from 12-bit and 14-bit conversion

making it possible to optimize the tradeoff between speed and resolution in generating a digital

value. See section 38, 14-Bit A/D Converter (ADC14) in User's Manual.

12-bit D/A Converter (DAC12)

The 12-bit D/A converts data and includes an output amplifier. See section 39, 12-Bit D/A

Converter (DAC12) in User's Manual.

8-bit D/A Converter (DAC8) (for

ACMPLP)

The 8-bit D/A converts data and does not include an output amplifier (DAC8). The DAC8 is

used only as the reference voltage for ACMPLP. See section 43, 8-Bit D/A Converter (DAC8)

in User's Manual.

Temperature Sensor (TSN)

The on-chip temperature sensor determines and monitors the die temperature for reliable

operation of the device. The sensor outputs a voltage directly proportional to the die

temperature, and the relationship between the die temperature and the output voltage is linear.

The output voltage is provided to the ADC for conversion and can be further used by the end

application. See section 40, Temperature Sensor (TSN) in User's Manual.

Low-Power Analog Comparator

(ACMPLP)

The analog comparator compares a reference input voltage and analog input voltage. The

comparison result can be read by software and also be output externally. The reference input

voltage can be selected from an input to the CMPREFi(i = 0,1) pin, an internal 8-bit D/A

converter output, or the internal reference voltage (Vref) generated internally in the MCU.

The ACMPLP response speed can be set before starting an operation. Setting the High-speed

mode decreases the response delay time, but increases current consumption. Setting the

Low-speed mode increases the response delay time, but decreases current consumption. See

section 42, Low Power Analog Comparator (ACMPLP) in User's Manual.

Operational Amplifier (OPAMP)

The operational amplifier amplifies small analog input voltages and outputs the amplified

voltages. A total of four differential operational amplifier units with two input pins and one

output pin are provided. See section 41, Operational Amplifier (OPAMP) in User's Manual.

Table 1.8

Communication interfaces (2 of 2)

Feature

Functional description

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