The Puya P25Q40UJ‑C8H is a 4Mbit (512 KB) ultra‑low‑power serial NOR flash memory tailored for compact, battery‑powered embedded applications. It uses a standard SPI interface, supports clock speeds up to 85 MHz, and features Dual/Quad I/O access, enabling rapid and efficient data transfers Operating at 1.65 V to 3.6 V, this device is ideal for IoT sensors, wearables, portable medical devices, and smart meters. It includes a deep power‑down mode for minimal standby current, enhancing energy efficiency in long‑run deployments.Designed for reliability in space‑constrained boards, the P25Q40UJ‑C8H comes in a SOP‑8 (C8H) package and supports up to 100,000 program/erase cycles per sector. It also includes robust data protection mechanisms like block protection, software‑controlled write inhibition, and hardware lock via the /WP pin 

⚙️ Key Features:

• Memory Size: 4 Mbit (512 KB)

• Interface: SPI, Dual/Quad I/O

• Clock Speed: Up to 85 MHz

• Operating Voltage: 1.65 V – 3.6 V

• Low‑Power Operation: Deep power‑down mode supported

• Endurance: 100,000 program/erase cycles

• Data Integrity: Block protection, software/hardware write control, /WP pin

• Package: SOP‑8 (C8H), ideal for compact PCB designs

• Temperature Range: –40 °C to +85 °C (industrial grade)

✅ Typical Applications:

• IoT edge modules

• Smart sensors and meters

• Wearable and portable devices

• Medical electronics

• Low‑power embedded platforms