16 Mbit SPI Quad I/O Flash for extended-temperature designs
The SST26VF016BT-80E/SM is a 16 Mbit (2M x 8) non-volatile FLASH memory from Microchip's SST26 SQI® series, communicating over an SPI bus with Quad I/O support at up to 80 MHz clock frequency. This combination delivers effective read throughput near 320 Mbps, useful for fast code shadowing or high-speed data logging without a parallel bus. It operates across a wide supply range of 2.3V to 3.6V, making it compatible with both 3.3V and 2.5V logic systems without an extra regulator. The -40°C to 125°C temperature grade suits automotive under-hood, industrial outdoor, and other thermally demanding environments.
Throughput and timing margins at 80 MHz
The 80 MHz clock with Quad I/O interface means the part can sustain a read throughput of roughly 40 Mbytes/s in Fast Read Quad I/O mode. This is a practical speed for feeding an MCU executing code-in-place or for buffering sensor data in a real-time control loop. Write cycle time is 1.5 ms per word or page, which is typical for this density class. The page write time matters for firmware-update cycles — a full 16 Mbit rewrite at 1.5 ms per page (256-byte pages) takes roughly 12 seconds, so plan update intervals accordingly.
Active lifecycle and sourcing posture
The part is available in Tape & Reel (TR) and Cut Tape (CT) options, with the 8-SOIJ (8-SOIC 0.209" width) package being a common footprint for serial Flash. We quote to order against your BOM quantity — confirm the package variant (Tape & Reel vs Cut Tape) and the exact temperature range when placing the RFQ.
Package and footprint: 8-SOIJ
The 8-SOIJ (8-SOIC, 0.209" body width, 5.30 mm) package is a narrow-body SOIC variant. The pinout is standard for serial Flash — CS#, SO/SIO1, WP#/SIO2, GND, SI/SIO0, SCK, HOLD#/SIO3, VDD. The 0.050" (1.27 mm) pitch is layout-friendly on two-layer boards. Decoupling: place a 100 nF ceramic capacitor close to VDD pin (pin 8) with a short return via to the ground plane. The supply range 2.3V to 3.6V means the part tolerates a 3.3V rail with ±10% tolerance, but check the minimum voltage at the device during peak current draw (read/write bursts).