16 Mbit parallel NOR Flash for code storage
The Infineon S29AL016J70TFI020 is a 16 Mbit parallel NOR Flash memory from the AL-J series, organized as 2M x 8 or 1M x 16 bits. It provides a 70 ns access time and operates from a 2.7V to 3.6V supply, suiting 3.3V system rails.
70 ns access time — bus timing margin
The 70 ns access time sets the read cycle window for the host controller. At a 3.3V supply, this part meets the timing requirements of most 8- or 16-bit parallel bus interfaces running below 14 MHz without wait states. If the controller's memory controller runs faster, check the address-to-data valid window against the controller's setup/hold spec.
The 2.7V to 3.6V supply range covers a 3.3V rail with margin for brownout down to 2.7V, which helps in battery-backed or lightly regulated systems.