128 Mbit serial NOR Flash for low-voltage SPI buses
The MT25QU128ABA8ESF-0SIT: 128 Mbit serial NOR Flash organized as 16M x 8 bits, SPI interface at 133 MHz, 1.7 V to 2 V supply.
16-pin SOIC wide-body package (0.295-inch body width, 7.50 mm pitch), surface-mount soldered. Supplier device package code is 16-SO.
Write cycle timing
Page program time is 2.8 ms typical; a full word (16-bit) write takes 8 ms. These are the erase-and-program cycle times that govern firmware update latency — relevant if you are doing over-the-air updates or frequent data logging that rewrites large blocks.