PSRAM (Pseudostatic DRAM)

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Product Description

HYPERRAM™ – Low pin count, High bandwidth expansion memories in small footprint

HYPERRAM™ is a stand-alone pSRAM based volatile memory that offers you an easy and inexpensive way to add more RAM to your applications. These low-power devices have high performance and low pin-count, making them ideal for applications requiring external RAM for buffering data, audio, images, video or as a scratchpad for math and data-intensive operations. These devices are available from 64 Mbit up to 512 Mbit in density and support JEDEC compliant HyperBus and Octal xSPI interfaces.

Density : 64Mb, 128Mb, 256Mb, 512Mb
Interface: HyperBus(x8) and Octal xSPI(x8)

Key features

Small Form Factor – FBGA package to ensure small PCB footprint
Low Pin-Count – Low pin-count to aid design simplicity and reduce system cost
Low Power – Hybrid sleep mode and partial array refresh for energy efficiency
High Throughput – High read/write bandwidth to maximize system performance

Infineon’s HYPERRAM™ Family


The first generation of HYPERRAM™ products were launched in 2017. HYPERRAM™ 2.0 is the second generation of products and support higher throughputs of upto 400MBps and lower power consumption. HYPERRAM™ 2.0 products are available in densities ranging from 64Mb to 512Mb and supports Octal extended SPI interface (Octal xSPI RAM products) in addition to the HyperBus interface. HYPERRAM™ 2.0 devices are AEC-Q100 qualified and support Industrial and Automotive temperature grades upto 125C.

The third-generation products – HYPERRAM™ 3.0, doubles the throughput to 800MBps using a new 16-bit extended version of the HyperBus interface.

HYPERBUS™ Interface


HYPERRAM™ devices are able to achieve high bandwidth compared to traditional parallel expansion memories via the HyperBus Interface. The HyperBus interface utilizes a high-speed 8-bit DDR interface for both address and data along with a differential clock, a read/write latch signal, and a chip select. Both HyperBus and the Octal xSPI interfaces are JEDEC compliant.

HyperBus can also support external NOR flash and RAM on the same bus, and works with any microcontroller with a HyperBus compatible peripheral interface. Visit our HyperBus memories page to know more about HyperFlash memory and HyperRAM + HyperFlash Multi-chip package (MCP) solutions.

HYPERRAM™ vs competing expansion memory solutions

HYPERRAM™ products achieve far higher throughput per pin compared to competing technologies such as traditional pSRAMs and SDR DRAMs which are based on a parallel interface. The in-built self-refresh circuitry and low-power features such as partial array refresh and hybrid sleep enable lower power consumption making HyperRAM apt for power constrained applications such as wearables and IoT devices.

Feature HYPERRAM™ ADMUX pSRAM SDR DRAM
#Pins Low High High
Throughput Medium-High Low-Medium Low-High
Power Low Medium High
Package Size Small Large Large

PSRAM (Pseudostatic DRAM) subcategories

HYPERBUS™ Memory

Trusted Solutions for driver assistance systems and intrument cluster
HYPERBUS™ Memory is a portfolio of high-speed, low-pin-count NOR Flash and expansion RAM memory products that uses our HYPERBUS™ interface technology. The HYPERBUS™ interface draws upon the legacy features of both parallel and serial interface memories, while enhancing system performance, ease of design, and system cost reduction. The 12-pin, HYPERBUS™ interface operates at Double Data Rate (DDR) and can scale up to 400 MB/s throughput making it an ideal solution for automotive, industrial, and IoT applications that require “instant-on” capability.

HYPERFLASH™ NOR Memory Flash
HYPERFLASH™ NOR Memory Flash devices deliver the performance required for the highest-performance embedded systems found in automotive advanced driver assistance systems (ADAS), automotive instrument cluster, automotive infotainment systems, and communication equipment. They deliver high read bandwidth at 333MB/s, over four times faster than Quad SPI NOR flash with one-third the number of pins of parallel NOR flash.

HYPERRAM™ 1.0 PSRAM Memory
HYPERRAM™ 1.0 PSRAM memory is a self-refresh DRAM operating on the HYPERBUS™ interface. With a read throughput up to 333 MB/s, the HYPERRAM™ devices are ideal for SoCs with limited on-board RAM providing external scratch-pad memory for fast read and write operations, allowing fast delivery of high-resolution graphics in the early part of the boot process for automotive, industrial and IoT applications. Implementing HYPERFLASH™ and HYPERRAM™ (HYPERFLASH™ + HYPERRAM™ MCP) together provides an optimum high-performance memory subsystem with 70% fewer pins and a 77% smaller footprint compared to existing SDRAM and Quad SPI solutions.

HYPERRAM™ 2.0 PSRAM Memory
HYPERRAM™ 2.0 PSRAM memory is the second generation of high-speed, low-pin-count, low-power, self-refresh Dynamic RAM (DRAM) for high-performance embedded systems requiring expansion memory. HYPERRAM™ 2.0 delivers upto 400 MB/s throughput and supports both HYPERBUS™ and Octal xSPI interfaces that draw upon the legacy features of both parallel and serial interface memories, while enhancing system performance and ease of design, as well as reducing system cost.

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