SPRUJ28F November 2021 – August 2025 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
The PBIST architecture consists of a small CPU with an instruction set targeted specifically towards testing memories. This CPU includes both the control and the instruction registers necessary to execute the individual memory algorithms. Once an algorithm is loaded into the instruction registers, it can be run on multiple memories of different sizes or types by changing the control register. The following figure shows the basic block diagram for PBIST.
Figure 12-516 PBIST Block Diagram