MG64PB28 查看數據表（PDF） - Oki Electric Industry

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MG64PB28

0.25µm Embedded DRAM/Customer Structured Arrays

Oki Electric Industry 

s MG63P/64P/65P s ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

Automatic Test Pattern Generation

Oki’s 0.25µm ASIC technologies support ATPG using full scan-path design techniques, including the fol-

lowing:

• Increases fault coverage ≥ 95%

• Uses Synopsys Test Compiler

• Automatically inserts scan structures

• Connects scan chains

• Traces and reports scan chains

• Checks for rule violations

• Generates complete fault reports

• Allows multiple scan chains

• Supports vector compaction

ATPG methodology is described in detail in Oki’s 0.25µm Scan Path Application Note.

Scan Data In

Scan Select

FD1AS

D

Q

C

SD

SS QN

Combinational Logic

A

B

FD1AS

D

Q

C

SD

SS

QN

Scan Data Out

Figure 14. Full Scan Path Configuration

Floorplanning Design Flow

Oki offers two floorplanning tools for high-density ASIC design: Cadence DP3, and Gambit GFP. The

two main purposes for Oki’s floorplanning tools are to:

• Ensure conformance of critical circuit performance specifications

• Shorten overall design TAT

In a traditional design approach with synthesis tools, timing violations after prelayout simulation are

fixed by manual editing of the netlist. This process is difficult and time consuming. Also, there is no

physical cluster information provided in the synthesis tool, and so it is difficult to synthesize logic using

predicted interconnection delay due to wire length. Synthesis tools may therefore create over-optimized

results.

To minimize these problems, Synopsys proposed a methodology called, “Links to Layout (LTL)”. Based

on this methodology, Oki developed an interface between Oki’s Floorplanner and the Synopsys environ-

ment, called Link Synopsys to Floorplanner (LSF). As not every Synopsys user has access to the Synopsys

Floorplan Management tool, Oki had developed the LSF system to support both users who can access

Synopsys Floorplan Management and users who do not have access to Synopsys Floorplan Manage-

ment.

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Oki Semiconductor

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