BY25Q40GWSIG(R)

Memory IC Overview

The BY25Q40GWSIG(R) is a 4M-bit SPI NOR Flash memory manufactured by BYTe Semiconductor. It supports Standard, Dual, and Quad SPI interfaces with clock rates up to 80MHz for non-standard reads. The device features flexible erase architectures including 4KB sectors and 32/64KB blocks. It operates on a single supply voltage ranging from 1.65V to 3.6V and offers software/hardware write protection with security registers. Available in USON-8 (2x3mm) and SOP-8 packages, it supports commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature ranges.

Memory IC Feature Summary

• Supports Standard, Dual, and Quad SPI modes with software reset capability
• Features flexible erase architecture with 4KB sectors and 32/64KB blocks
• Includes hardware and software write protection with three 512-byte security registers
• Operates on a single low-voltage power supply ranging from 1.65V to 3.6V

Memory IC Applications

• Code shadowing from flash to embedded or external RAM for execution
• Data storage applications requiring efficient memory space usage
• Consumer-based high-volume electronic devices

Memory IC Procurement Notes

Verify the specific package variant required, as the datasheet lists SOP-8 (150mil/208mil) and USON-8 (2x3mm). Confirm the suffix 'SIG' corresponds to the intended pinout and marking requirements. Ensure environmental specifications match the target application's temperature range, distinguishing between commercial and industrial grades. Cross-reference the manufacturer's ordering information to validate the exact part number configuration before procurement.

Memory IC Selection Notes

Select this component for applications requiring small form factor memory with flexible erase granularity. The wide voltage range of 1.65V to 3.6V suits various low-power systems. Consider the available package options, such as USON-8 for compact designs. Evaluate the need for hardware write protection and security registers if data integrity is critical. Ensure the host system supports the desired SPI mode, whether Standard, Dual, or Quad.

Memory IC Part Context

The BY25Q40GW series is designed for high-volume consumer applications where code execution and data storage are required. It optimizes memory space efficiency by allowing smaller erase block sizes compared to traditional large-sectored flash devices. This flexibility reduces wasted memory space, enabling additional code routines and data segments within the same density.

Memory IC Replacement Considerations

BY25Q40GWTIG(T)