RZSLASHG3S datasheet(4/88 Pages) RENESAS

4 / 88 page

RZ/G3S Group

1. Overview

R01DS0489EJ0120

Rev.1.20

Page 4 of 88

May 29, 2026

1.1.4

External Memory Interface

Item

Description

External Bus Controller for DDR4

/ LPDDR4 SDRAM

(DDR)

● Support DDR4-1600 / LPDDR4-1600

● Bus Width: 16-bit

● In line ECC supported (Support error detection interrupt)

● Memory Size: Up to 4 Gbytes (DDR4), 1 Gbytes (LPDDR4)

● Auto Refresh / Self Refresh supported

● On-The-Fly Decryption / Encryption supported

eXpanded Serial Peripheral

Interface (xSPI)

● 1 channel

● Up to 2 serial flash memories can be connected

● Connectable with 2 Quad-SPI flash memories

● Connectable with 2 Octal-SPI flash memories

● Connectable with 2 Octal-RAMs

● External address space read mode (built-in read cache)

● SPI operation mode

● Maximum Clock Frequency: 66 MHz (Single-SPI / Quad-SPI, SDR, 1.8 V / 3.3 V), 133 MHz

(Octal-SPI / OctaFlash / OctaRAM, DDR, 1.8 V)

● On-The-Fly Decryption / Encryption supported

Octa Memory Controller

● Macronix Serial Multi I/O (MXSMIO®) Octa Peripheral Interface (OPI) for high-end consumer

applications is supported.

● One each of an OctaFlash device and an OctaRAM device compliant with the OPI

specifications are connectable.

● A chip select signal is assigned to each memory device (OM_CS0#: OctaFlash; OM_CS1#:

OctaRAM).

● Supported device interfaces

SPI:

Serial peripheral interface (OctaFlash, SPI mode)

SOPI:

Single Octa I/O (8 bits) (OctaFlash, single data rate)

DOPI:

Double Octa I/O (8 bits) (OctaFlash and OctaRAM, double data rate)

● On-The-Fly Decryption / Encryption supported

SD Card Host Interface /

Multimedia Card Interface

(SD/MMC)

● 3 channels

● Channel 0 supports SDHI / e-MMC (boot supported)

● Channel 1 and 2 support SDHI

(Channel 1: Dedicated pin, Channel 2: Multiplexed pin, 3.3 V only)

● SD memory I/O card interface (1-bit/4-bit SD bus)

● SD, SDHC and SDXC SD memory card access supported

● Compliant with SD 3.0

● Default, high-speed, UHS-I/SDR50, SDR104 transfer modes supported

● Error check function: CRC7 (Command/response), CRC16 (Data)

● Card detection function, write protect supported

● MMC interface (1-bit/4-bit/8-bit MMC bus)

● e-MMC device access supported

● Compliant with eMMC 4.51

● High-speed, HS200 transfer modes supported (SD clock (SD_CLK) frequency: Up to 125 MHz)

RZ/G3S Datasheet(PDF) 4 Page - Renesas Technology Corp

RZ/G3S Datasheet(HTML) 4 Page - Renesas Technology Corp

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