4Mbit async SRAM in a 48-ball BGA
The 71V416L10BEG is a 4Mbit asynchronous SRAM from Renesas, organized as 256K x 16 bits with a 10 ns access time. Housed in a 48-CABGA (9x9 mm) package, this is a surface-mount device intended for reflow assembly — not a hand-solderable part. The fine-pitch BGA footprint requires a controlled solder profile and X-ray inspection for voiding.
Speed, timing, and temperature grade
With a 10 ns access time and a matching 10 ns write cycle time (word/page), this SRAM keeps up with medium-speed bus masters without wait-state insertion in many 16-bit microcontroller and DSP designs. The 256K x 16 organization means a single chip provides a 16-bit data word per address, simplifying the bus layout compared to two 8-bit-wide parts.
No official successor or second-source cross-reference is published. The 48-CABGA package is unique to this density and organization; a board spin would be required to substitute a different SRAM footprint.