What this FIFO is and where it fits
The Renesas 7203L12JG is an asynchronous FIFO memory from the 7200 series, organized as 2K x 9 bits (18 Kbit total).
Asynchronous operation and retransmit capability
This is a true asynchronous FIFO: separate read and write clocks (or strobes) with independent enable pins. No FWFT (First-Word Fall-Through) support means the first written word does not appear on the outputs until the first read strobe — a standard synchronous-style read cycle. The retransmit capability allows resetting the read pointer to the beginning of the FIFO without clearing the data, useful for retry-on-error protocols. Expansion is supported in both depth and width, so multiple 7203L12JG devices can be cascaded for larger buffers.
Sourcing and lifecycle
The 7203L12JG is listed as Active with RoHS3 compliance. We source and quote this part to order against an RFQ; current pricing and lead time are confirmed at quote time. For a BOM that requires a 2K x 9 asynchronous FIFO in a 32-PLCC, this is a direct fit with no substitution risk.