2 Mbit parallel Flash in a ceramic DIP — what it is and where it fits
The STMicroelectronics 5962-9323501MXA is a 2 Mbit parallel Flash memory organized as 256K x 8 bits, with a 200 ns access time and a 4.5 V supply. It comes in a 32-pin ceramic DIP (CDIP) for through-hole mounting. The -55°C to 125°C temperature range qualifies it for military, avionics, and downhole applications where extended thermal cycling and high reliability are required.
200 ns access — what it means for the bus
The 200 ns access time sets the read-cycle window for the host controller. The write cycle time per word or page is also 200 ns.
Military temperature range — deployment context
Rated for -55°C to 125°C, this Flash is suited for avionics, missile guidance, satellite, and downhole drilling equipment where the ambient temperature exceeds commercial or industrial limits. The ceramic package handles the thermal expansion mismatch that plastic packages would crack under repeated extreme cycles.
Drop-in check against 5962-9089902MUA
The 5962-9089902MUA is a 1 Mbit (128K x 8) parallel Flash in a surface-mount package, not a through-hole CDIP. The 5962-9323501MXA has twice the density (2 Mbit vs 1 Mbit) and a different footprint. It will not drop into a board designed for the 5962-9089902MUA without a PCB layout change and firmware update to use the larger address space.