15 ns access, 256K x 16 organization
The Renesas 71V416L15BEGI is a 4Mbit asynchronous SRAM organized as 256K words by 16 bits. The 15 ns access time means the read cycle completes within 15 ns of the address transition — this sets the bus timing floor for the memory controller. In a 66 MHz bus with a 15 ns cycle budget, this part meets the access window without wait states.
Supply and temperature envelope
The 48-CABGA (9x9 mm) package uses a 0.8 mm ball pitch — the fan-out requires a four-layer PCB with microvias if the inner rows are routed out.