• 32 MB serial NOR Flash memory
• Supports extended SPI protocol, dual I/O, and quad I/O
• Minimum 100,000 erase cycles per sector
• More than 20 years data retention

The Digilent Pmod SF3 provides 32MB of Serial Flash Memory.

Functional Description

The Pmod SF3 utilizes Micron's NOR Flash memory (N25Q256A) to provide easily accessed non-volatile memory to system boards.

Interfacing with the Pmod

The Pmod SF3 communicates with the host board via the SPI protocol. By bringing the Chip Select line logic level low voltage, users may issue a single byte instruction code to memory chip.

The memory is byte-addressed with the range of 0x000000 to 0x1FFFFFF and is organized into 256 byte pages, 4 KB subsectors, and 64 KB sectors. The memory is written by using an Erase-Program cycle. The smallest programmable unit is one page and the smallest erasable unit is 1 subsector.

Physical Dimensions

The pins on the pin header are spaced 100 mil apart. The PCB is 1 inch long on the sides parallel to the pins on the pin header and 0.8 inches long on the sides perpendicular to the pin header.