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  3. Renesas — SLG47912, SLG47920 & SLG47921 Low-Power Compact FPGAs

Renesas — SLG47912, SLG47920 & SLG47921 Low-Power Compact FPGAs

 

Renesas

Renesas SLG47912, SLG47920 & SLG47921 Low-Power Compact FPGAs

Compact, low-power FPGAs with Flexible Configuration and Secure Bitstream Support

The Renesas SLG47912, SLG47920, and SLG47921 are compact, low-power FPGA devices designed for space-constrained digital systems requiring flexible logic integration and efficient power management. These highly versatile devices support configuration through one-time programmable (OTP) non-volatile memory or via an SPI interface using an external bitstream source, allowing designers to optimize boot architecture and system flexibility.

With dense configurable logic arrays, integrated memory resources, and support for LVDS signaling, the SLG4791x family enables a broad range of applications across consumer, industrial, and portable electronics. Advanced power control features, multiple configuration modes, and strong security capabilities make these devices well suited for secure, low-power digital designs.

All three devices feature dual I/O voltage domains (1.71 V to 3.465 V) with a 1.1 V core supply, integrated 50 MHz high-frequency oscillator, PLL support, and flexible clock management. Security features include CRC integrity checks and AES bitstream decryption. Two ultra-low-power idle modes support state retention for GPIOs and BRAM while maintaining consumption below 85 µA.

Shared Key Features

  • OTP or SPI configuration modes
    • SPI Controller (Master) mode
    • SPI Target (Slave) mode
    • Boot control logic supporting up to 16 external bitstreams
  • Dual I/O voltage domains
  • 50 MHz internal oscillator with programmable divider
  • Phase-locked loop support
  • Configurable drive strength (4 / 8 / 12 mA)
  • Optional pull-ups and Schmitt trigger inputs
  • LVDS support up to 100 Mbps
  • Flexible power-consumption control
    • Core and clock power management
    • BRAM deep-sleep and power-gated modes
  • Two idle low-power modes with GPIO and BRAM retention
  • Bitstream security with CRC and AES decryption
  • Operating temperature range: -40°C to 85°C
  • RoHS compliant and halogen free

Applications

  • Consumer electronics
  • Data communications equipment
  • Handheld and portable devices
  • Notebooks and tablets
  • Industrial instrumentation and control


Renesas_SLG47912_SLG47920_SLG47921 ForgeFPGA

Device Overview

Technical Specifications & Block Diagrams

SLG47912: 1120 LUT Low-Power FPGA with 40 GPIOs

The SLG47912 is optimized for compact designs requiring moderate logic density and high I/O flexibility.

  • 1120 5-bit LUTs
  • 1120 D-type flip-flops
  • 5 kb distributed memory
  • 32 kb block RAM
  • 40 GPIOs
  • Six LVDS-capable GPIOs

SLG47912 Block Diagram

SLG47920: 2240 LUT FPGA with 32 GPIOs

The SLG47920 doubles logic density for more complex designs while maintaining a compact footprint.

  • 2240 5-bit LUTs
  • 2240 D-type flip-flops
  • 10 kb distributed memory
  • 64 kb block RAM
  • 32 GPIOs
  • Six LVDS-capable GPIOs
  • Available in 40-pin QFN (5.0 mm × 5.0 mm)

SLG47921: 2240 LUT FPGA with 40 GPIOs

  • 2240 5-bit LUTs
  • 2240 D-type flip-flops
  • 10 kb distributed memory
  • 64 kb block RAM
  • 40 GPIOs
  • Six LVDS-capable GPIOs
  • Available in 48-pin LQFN (6.0 mm × 6.0 mm) and 48-pin WLCSP (3.24 mm × 2.57 mm)

SLG47920/SLG47921 Block Diagram

Evaluation Boards & Kits

Overview & Evaluation Boards & Kits

SLG4DVKGOCONF: Go Configure Development Board

The Go Configure™ Development Board is a universal development board for Renesas' ForgeFPGA products that supports all features of the Go Configure™ Software Hub. A set of compatible socket cards is available for a quick and easy start to the development process. This board is ideal for rapid prototyping, evaluation, and development of the Renesas FPGA devices. It is tightly integrated with the Go Configure Software Hub, which offers a graphical interface for design creation, simulation, and device programming.

Go Configure Development Board Quick Start Guide

SLG47921C-SKT: ForgeFPGA SLG47921C Socket Card Kit

The SLG47921C-SKT is a socket card kit for use with the SLG4DVKGOCONF Go Configure Development Board. The SLG47921C-SKT kit includes the ForgeFPGA™ Socket Card #5 (SLG7SC5), 20 samples of SLG47921C, and a Pmod™ LED adapter.

The ForgeFPGA Socket Card #5 is a development board designed for emulation and prototyping of ForgeFPGA integrated circuits. This socket card implements a connection between the pins of a ForgeFPGA and the Go Configure Development Board. This board can be used for design prototyping with different boot modes. The socket card supports Pmod standards and thus provides the ability to connect different Pmod adapters.

ForgeFPGA™ Socket Card #5 User Manual