LPDDR5 Controller

The Rambus LPDDR5 Controller supporting LPDDR5T, LPDDR5X, LPDDR5 controller core is designed for use in applications requiring high memory throughput at low power including mobile, automotive, Internet of Things (IoT), laptop PCs, and edge networking devices.

How the LPDDR5T/5X/5 Controller works

The LPDDR5 controller core accepts commands using a simple local interface and translates them to the command sequences required by LPDDR5 devices. The core also performs all initialization, refresh and power-down functions.

The core uses bank management logic to monitor the status of each LPDDR bank. Banks are only opened or closed when necessary, minimizing access delays.

The core queues up multiple commands in the command queue. This enables optimal bandwidth utilization for both short transfers to highly random address locations as well as longer transfers to contiguous address space. The command queue is also used to opportunistically perform look-ahead activates, precharges and auto-precharges further improving overall throughput.

LPDDR5 Memory Interface Subsystem Block Diagram
LPDDR5T/5X/5 Memory Interface Subsystem Block Diagram

Add-On Cores such as an AXI Core Bus Interface, Multi-Port Front-End and In-Line ECC Core can be optionally delivered with the core. The core can be delivered fully integrated and verified with the target LPDDR5 PHY.

LPDDR5X: Delivering High Bandwidth and Power Efficiency

Watch Webinar

The bandwidth and low power characteristics of LPDDR make it an increasingly attractive choice of memory for applications in IoT, automotive, and edge computing. LPDDR5X takes performance to the next level with a data rate of up to 8.5 Gbps. Join us to learn which applications can benefit from using LPDDR memory.

Solution Offerings

Protocol Compatibility

Protocol Data Rate (Gbps) Application
LPDDR5T/5X/5 9.6 / 8.5 / 6.4 Mobile, Automotive, IoT, Laptop PCs, Edge
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