Additional Pictures 


Close-up view of the TP0531 CRAM chip used with the Texas Instruments TI-88 "PVT Build 3" with Serial Number 1073.
CMOS Technology, 28-pin SPDIP, 600 Bytes  RAM, 4-bit Data and Command Interface.

Die Photo of the first TP0531 courtesy of Sean Riddle.

Die Photo of the second TP0531 courtesy of Sean Riddle.

If you have additions to the above article please email:

Joerg Woerner, January 22, 2021. No reprints without written permission.