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EF_DFFRAM256x32

Efabless

OpenLane hardened DFFRAM macros. This repo provides three ready to use single port DFFRAM macros:

128x32 (512 bytes) 256x32 (1024 bytes) 512x32 (2048 bytes)

General Information

  • Maturity: Implemented. The design has been implemented but verification is not complete.
  • Certification: EF Certified
  • Provider: Efabless
  • License: Open Source
  • Catagory: General Purpose I/O
  • Foundary: Skywater
  • Node: 130nm
  • PDK: SKY130

Read and Write Operations

The DFFRAM adheres to the SRAM read/write operation. The following timing diagram explains its operation. DFFRAM RD/WR

Timing Parameters

DFFRAM RD/WR

Parameters DFRAM128x32 DFFRAM256x32 DFFRAM512x32
TC (min) 25 ns 25 ns 25 ns
T1 (min) 6.8303 ns 4.7618 ns 3.2919 ns
T2 (min) 9.6186 ns 8.6898 ns 8.4561 ns
T3 (min) 6.7498 ns 4.7148 ns 3.7977 ns
T4 (max) 7.7625 ns 11.2799 ns 17.4558 ns

DFFRAM dimensions

IP W (um) L (um)
DFRAM128x32 553.890 564.610
DFRAM256x32 1153.835 536.015
DFRAM512x32 1186.960 1021.295

Installation

To install OL-DFFRAM via IPM (recommended)

Make sure that you have IPM installed locally, to install IPM please follow the instructions in IPM's repo

After making sure that IPM is installed, you can install DFFRAM using:

ipm install DFFRAM*size*
For example: ipm install DFFRAM256x32

To install OL-DFFRAM manually (not recommended)

Clone the OL-DFFRAM repo and use it inside your project

cd <your_project_root>
git clone https://github.com/efabless/OL-DFFRAM.git

Summary

Catalog ID

EF_DFFRAM256X32

Provider

Vendor

Vendor

Efabless

Node

130nm

Foundry

Skywater

Category

Static Random-Access Memory

Licensing

Info

Open Source (Free)

Quality

Certification

EF Certified

Maturity

Implemented