8 Mbit NOR Flash – 70 ns access, x8/x16 flexible map
The S29AL008J70TFI020 is an 8 Mbit parallel NOR Flash from Infineon's AL-J series, organized as 1M x 8 or 512K x 16 via a dedicated pin strap. The 70 ns access time and 70 ns write cycle are fast enough to keep a legacy 8-bit or 16-bit host bus running without wait-state insertion, provided the controller's memory controller timing matches.
70 ns access – bus-speed ceiling for the host
The 70 ns access time determines whether the flash can keep up with the host memory controller at zero wait states. Compared to the S29AL016J70BFI023 (16 Mbit, same 70 ns access, same 2.7-3.6 V range), the S29AL008J70TFI020 halves the density but keeps identical timing — a drop-in replacement for a BOM that needs 8 Mbit, not 16 Mbit. The 48-TSOP footprint is shared, so a board designed for the 16 Mbit part can be stuffed with the 8 Mbit without a layout change.
Active production – no last-time-buy pressure
The 48-TSOP tray package is a standard Infineon format; reel and tape options are available through the S29AL016J70BFI023 sibling but not confirmed for this exact order code. Because the part is active and the AL-J series is mature, lead times from Infineon's distribution channel are generally stable — no surprise allocation spikes typical of newer process nodes.
48-TSOP footprint – board-level fit check
The 48-TSOP package is a JEDEC-standard footprint shared across many parallel NOR Flash parts from Infineon and other vendors. The surface-mount mounting type means the reflow profile must match the 48-TSOP lead pitch.