BY25Q16ESSJG(R)

Memory IC Overview

The BY25Q16ESSJG(R) is a 16M-bit Serial Peripheral Interface (SPI) NOR Flash memory manufactured by BYTe Semiconductor. It supports standard SPI, Dual/Quad I/O SPI, and Quad Peripheral Interface (QPI) modes. The device operates on a single low voltage power supply ranging from 2.7V to 3.6V. It features a flexible architecture with 4KB sectors and 32KB/64KB blocks. Key performance metrics include a maximum clock frequency of 108MHz for fast read, enabling data transfer rates up to 432Mbits/s in Quad I/O mode. The component offers typical endurance of 100k program-erase cycles and data retention of 20 years.

Memory IC Feature Summary

• Supports multiple interface modes including Standard SPI, Dual SPI, Quad SPI, and QPI for high-speed data transfer.
• Features Execute In Place (XIP) capability allowing continuous read operations with minimal instruction overhead.
• Includes comprehensive write protection mechanisms via software commands and hardware /WP pin control.
• Provides flexible erase granularity with support for sector, block, half-block, and chip erase operations.

Memory IC Applications

• Power and industrial control systems requiring stable non-volatile storage
• Embedded systems utilizing XIP for direct code execution from flash
• Industrial automation equipment needing wide temperature range reliability
• Consumer electronics requiring compact surface-mount memory solutions

Memory IC Procurement Notes

Verify the specific suffix 'SJG' against official BYTe Semiconductor documentation to confirm package type and tape/reel specifications. Ensure compatibility with host system voltage levels within the 2.7V to 3.6V operating range. Confirm moisture sensitivity level handling procedures during assembly. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Memory IC Selection Notes

Select this component when a 16M-bit density is required with support for high-speed Quad I/O and QPI interfaces. Consider the 8-SOP package format for PCB layout constraints. Evaluate thermal requirements if operating near the upper limits of the specified temperature range. Compare endurance specifications against application write-cycle demands to ensure long-term reliability.

Memory IC Part Context

This part belongs to the BY25Q16ES family of SPI NOR Flash memories from BYTe Semiconductor. The family shares core architectural features but varies in packaging and ordering suffixes. It is designed as a drop-in replacement for similar 16M-bit devices in many applications, though electrical characteristics should be verified against original designs.

Memory IC Replacement Considerations

Public confirmed substitute part numbers include BY25Q16BSSIG(R). Verify pinout compatibility and electrical parameters before substitution.

Memory IC FAQ

What is the difference between Quad SPI and QPI modes?

Quad SPI uses four pins for data transfer but retains separate pins for instructions and addresses. QPI utilizes all four pins for instructions, addresses, and data, reducing command overhead and improving performance in XIP environments.

How does the hardware write protect function work?

Driving the /WP pin low protects the Status Register and the memory areas defined by the Block Protect bits, preventing unintended writes or erases while the pin remains low.