S7G2 datasheet(6/116 Pages) RENESAS

6 / 116 page

R01DS0262EU0100 Rev.1.00

Page 6 of 113

Feb 23, 2016

S7G2

1. Overview

Ethernet MAC with IEEE 1588 PTP

(ETHERC)

Two-channel Ethernet MAC Controller (ETHERC) compliant with the Ethernet/IEEE802.3

Media Access Control (MAC) layer protocol. Each ETHERC channel provides one channel of

the MAC layer interface, connecting the MCU to the physical layer LSI (PHY-LSI) that allows

transmission and reception of frames compliant with the Ethernet and IEEE802.3 standards.

The ETHERC is connected to the Ethernet DMA Controller (EDMAC) so data can be

transferred without using the CPU.

To handle timing and synchronization between devices, an on-chip Precision Time Protocol

(PTP) module for the Ethernet PTP Controller (EPTPC) applies the PTP defined in the IEEE

1588-2008 version 2.0 standard.

The EPTPC is composed of:

 Synchronization Frame Processing units (SYNFP0 and SYNFP1)

 A Packet Relation Controller unit (PRC-TC)

 A Statistical Time Correction Algorithm unit (STCA).

Use the EPTPC in combination with the on-chip Ethernet MAC Controller (ETHERC) and the

DMA Controller for the PTP Ethernet Controller (PTPEDMAC). See section 29, Ethernet MAC

Controller (ETHERC) in User's Manual.

SD/MMC Host Interface (SDHI)

The SDHI and MultiMediaCard (MMC) interface provide the functionality required to connect a

variety of external memory cards to the MCU. The SDHI supports both 1- and 4-bit buses for

connecting 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-, 4-, and 8-bit MMC buses that provide eMMC 4.51 (JEDEC

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

and supports high-speed SDR transfer modes. See section 43, SD/MMC Host Interface

(SDHI) in User's Manual.

Table 1.10

Analog

Feature

Functional description

12-Bit A/D Converter (ADC12)

Up to two successive approximation 12-Bit A/D Converters are provided. In unit 0, up to 13

analog input channels are selectable. In unit 1, up to 12 analog input channels, the

temperature sensor output, and an internal reference voltage are selectable for conversion.

The A/D conversion accuracy is selectable from 12-, 10-, and 8-bit conversion, making it

possible to optimize the tradeoff between speed and resolution in generating a digital value.

See section 46, 12-Bit A/D Converter (ADC12) in User's Manual.

12-Bit D/A Converter (DAC12)

The DAC12 D/A converts data and includes an output amplifier. See section 47, 12-Bit D/A

Converter (DAC12) in User's Manual.

Temperature sensor (TSN)

The on-chip temperature sensor can determine and monitor 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 ADC12 for conversion and can also be used by the end

application. See section 48, Temperature Sensor (TSN) in User's Manual.

High-Speed Analog Comparator

(ACMPHS)

Analog comparators can be used to compare a test voltage with a reference voltage and to

provide a digital output based on the conversion result.

Both the test and reference voltages can be provided to the comparator from internal sources

such as the DAC12 output and internal reference voltage, and an external source with or

without an internal PGA.

Such flexibility is useful in applications that require go/no-go comparisons to be performed

between analog signals without necessarily requiring A/D conversion. See section 49, High-

Speed Analog Comparator (ACMPHS) in User's Manual.

Table 1.11

Human machine interfaces (1/2)

Feature

Functional description

Key interrupt function (KINT)

A key interrupt can be generated by setting the Key Return Mode register (KRM) and inputting

a rising or falling edge to the key interrupt input pins. See section 21, Key Interrupt Function

(KINT) in User's Manual.

Table 1.9

Communication interfaces (2/2)

Feature

Functional description

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