TC55BS8128J-12 ram equivalent, 128k x 8-bit synchronous static ram.
The TC55BS8128J is a 1,048,576 bit synchronous static random access memory fabricated using BiCMOS technology and organized as 131,072 words by 8 bits. The TC55BS8128J is similar to the TC55BS8125J but has separate data inputs and outputs and a write.
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