128 Mbit parallel NOR flash — firmware storage with deterministic read latency
The Infineon S29GL128S10TFIV13 is a 128 Mbit parallel NOR flash from the GL-S series, organized as 8M x 16 bits. It provides a 100 ns access time, meaning the host controller sees deterministic read latency on every cycle — no page-buffer precharge or row-address strobe overhead typical of NAND.
Industrial temperature grade and write-cycle budget
The write cycle time is 60 ns for word and page operations — budget this into the firmware update routine: a full 128 Mbit erase-and-write sequence at the page level takes roughly 1.2 seconds on the parallel bus at 100 ns per word. The 56-TSOP package (0.724-inch body width, 18.40 mm) uses a standard JEDEC footprint. The surface-mount profile and 0.50 mm lead pitch require a 4-layer PCB for clean fan-out of the 56 signal and power pins; two-layer boards will struggle with the address bus routing density.
Active lifecycle — no near-term LTB risk for production BOMs
Infineon lists the S29GL128S10TFIV13 as Active. For a production BOM that requires a parallel NOR flash at this density, this part is a low-risk line item for the next 3-5 years of builds. ROHS3 compliant — no restricted substances in the package or die attach.