Renesas R7S721031VCBG#AC0

Overview

R7S721031VCBG#AC0 from Renesas Electronics is a high-performance 32-bit ARM Cortex-A9 microprocessor in the RZ/A1L Group, integrating 512 KB L2 cache, DRAM controller (LPDDR2/LPDDR3), and dual USB 2.0 OTG with PHY for embedded HMI applications. It operates at up to 600 MHz, supports Linux and Android OS, and targets industrial human-machine interface systems requiring rich graphics and real-time connectivity.

For engineers reviewing the R7S721031VCBG#AC0 datasheet, R7S721031VCBG#AC0 pinout, R7S721031VCBG#AC0 application, or R7S721031VCBG#AC0 equivalent, key selection criteria include its LPDDR2/3 memory interface timing, USB OTG dual-role capability, 2D graphics accelerator (LCDC + 2D-GPU), and boot-from-serial-flash configuration support - all critical for cost-sensitive, display-rich edge devices.

Technical Context

The R7S721031VCBG#AC0 implements a single-core ARM Cortex-A9 CPU with NEON and VFPv4 extensions, coupled with a tightly integrated L2 cache controller and AXI-based on-chip interconnect. Its memory subsystem includes a configurable DRAM controller supporting 16-bit LPDDR2/LPDDR3 at up to 533 MHz data rate and 1 GB address space.

Peripheral integration includes dual USB 2.0 OTG controllers with integrated PHYs, a 24-bit RGB LCD controller with hardware overlay, a 2D graphics accelerator, and multiple serial interfaces (SPI, I²C, UART, CAN, SDHI). Boot modes are selected via dedicated pins and support QSPI flash, SD card, and serial ROM.

Key Specifications

Pinout & Package

The R7S721031VCBG#AC0 is housed in a 324-pin Fine-Pitch Ball Grid Array (FBGA) package with 0.65 mm pitch and 15 mm × 15 mm body size. The package includes an exposed thermal pad on the bottom for enhanced heat dissipation in continuous operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microprocessor-based HMI applications.

Compared with R7S721021VCBG#AC0, the R7S721031VCBG#AC0 delivers higher graphics throughput and larger cache for responsive GUIs; versus R7S721041VCBG#AC0, it provides identical HMI functionality at lower cost and standard temperature grade - making it the preferred choice for commercial indoor HMI designs.

Availability

R7S721031VCBG#AC0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart building controllers, and medical display terminals requiring stable component supply, long-term lifecycle support, and qualified sourcing for production ramp.

Supply support for R7S721031VCBG#AC0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and enterprise markets.

The RZ/A1L Group, including the R7S721031VCBG#AC0, was designed specifically for cost-sensitive, display-rich embedded applications requiring Linux-capable processing without external SDRAM or graphics ICs.

FAQ

What is the maximum operating frequency of the R7S721031VCBG#AC0?

The R7S721031VCBG#AC0 operates at a maximum CPU frequency of 600 MHz under specified thermal and voltage conditions (VDDCORE = 1.0 V ± 3%, ambient temperature ≤ 85°C). This frequency is achieved using the on-chip PLL with a 24 MHz crystal reference input and is validated across process corners per Renesas' Hardware User's Manual Rev.7.00. The R7S721031VCBG#AC0 maintains this speed while driving LPDDR2 memory and USB peripherals simultaneously.

Does the R7S721031VCBG#AC0 support booting from QSPI flash?

Yes, the R7S721031VCBG#AC0 supports booting directly from QSPI flash memory through Boot Mode 1, configured via dedicated BOOT pins (BMODE[2:0]). The on-chip ROM bootloader initializes the QSPI interface, loads the first-stage boot loader (FSBL) into on-chip SRAM, and executes it - enabling secure, field-upgradable firmware without external memory initialization code. This capability is documented in Section 3.5.2 of the RZ/A1L Hardware User's Manual.

What display interfaces does the R7S721031VCBG#AC0 support?

The R7S721031VCBG#AC0 integrates a 24-bit RGB parallel LCD controller supporting resolutions up to WXGA (1280×800) with programmable timing, polarity, and sync signals. It also includes a dedicated 2D graphics accelerator for hardware bitblt, alpha blending, and rotation - eliminating the need for external display controllers. No HDMI, MIPI DSI, or LVDS interfaces are integrated; those require external bridge ICs. This configuration is confirmed in Sections 1.3 (Block Diagram) and 1.5 (Pin Functions) of the RZ/A1L Hardware User's Manual.

Is the R7S721031VCBG#AC0 pin-compatible with other RZ/A1L devices?

The R7S721031VCBG#AC0 shares the same 324-pin FBGA package and pin assignment with other members of the RZ/A1L Group (e.g., R7S721021VCBG#AC0 and R7S721041VCBG#AC0), as defined in Section 1.4 "Pin Assignment" of the RZ/A1L Hardware User's Manual. Signal mapping, power domains, and ball function definitions are identical across these variants, enabling PCB reuse when migrating between models with different feature sets or temperature grades.

What is the memory interface capability of the R7S721031VCBG#AC0?

The R7S721031VCBG#AC0 features a 16-bit LPDDR2/LPDDR3 DRAM controller supporting data rates up to 533 MHz (1066 Mbps), delivering peak bandwidth of ~850 MB/s. It supports up to 1 GB of physical address space and includes configurable refresh timing, burst length, and CAS latency settings. This interface is optimized for low-power, high-density memory in portable and fanless HMI systems - distinct from DDR3 or DDR4 interfaces found in higher-tier RZ/A series devices.