BY25Q16ESTJG(R)

Memory IC Overview

The BY25Q16ESTJG(R) is a 16M-bit Serial Peripheral Interface (SPI) NOR Flash memory manufactured by BYTe Semiconductor. It supports Standard, Dual, and Quad SPI protocols as well as the Quad Peripheral Interface (QPI). The device operates on a single low-voltage power supply ranging from 2.7V to 3.6V. It features a maximum clock frequency of 108MHz for Fast Read operations, enabling data transfer rates up to 432Mbits/s in Quad I/O and QPI modes. The memory architecture includes uniform 4K-byte sectors and 32/64K-byte blocks. It offers flexible write protection via software or hardware (/WP pin), three 1024-byte security registers with OTP locks, and supports Execute In Place (XIP) operation.

Memory IC Feature Summary

• Supports multiple interface modes including Standard SPI, Dual SPI, Quad SPI, and QPI for high-speed data access.
• Enables Execute In Place (XIP) operation through continuous read modes with minimal instruction overhead.
• Provides comprehensive write protection mechanisms including sector/block selection, hardware /WP pin control, and three 1024-byte security registers with One-Time Programmable (OTP) locks.
• Features program and erase suspend/resume capabilities to allow non-intrusive reading during write cycles.

Memory IC Applications

• Firmware storage for microcontrollers and system-on-chip devices
• Code execution in place (XIP) applications requiring direct code execution from memory
• Consumer electronics and industrial control systems requiring reliable non-volatile storage
• IoT devices and communication equipment needing compact flash memory solutions

Memory IC Procurement Notes

Verify the specific suffix 'TJG' against the manufacturer's official ordering guide to confirm package type and tape/reel specifications. Ensure compatibility with the required operating temperature range, as the datasheet lists commercial and industrial grades. Confirm RoHS compliance status for your region. Cross-reference the JEDEC ID and unique ID requirements if system identification is critical. Check for any specific handling instructions related to electrostatic discharge during assembly.

Memory IC Selection Notes

Select this component when a 16M-bit capacity is required with support for high-speed Quad I/O and QPI interfaces. It is suitable for designs needing flexible write protection and security register features. Consider the available package options such as SOP8 or USON based on board space constraints. Ensure the host system can provide the necessary 2.7V to 3.6V supply voltage. Verify that the required temperature range matches the specific grade ordered.

Memory IC Part Context

The BY25Q16ES series belongs to BYTe Semiconductor's family of SPI NOR Flash memories. These devices are designed to replace similar offerings from other manufacturers in the 16M-bit density class. The series emphasizes high performance through advanced SPI protocols and robust data retention characteristics. It targets applications demanding reliable storage with flexible configuration options for security and protection.

Memory IC Replacement Considerations

Public confirmed substitute part numbers include BY25Q16BSSJG(T) and BY25Q16ESSIG(T). Verify pinout and electrical parameter compatibility before substitution. Ensure the replacement part meets the same voltage and temperature specifications.

Memory IC FAQ

How does the device handle program and erase operations?

The device supports Program/Erase Suspend and Resume instructions. This allows the user to pause a program or erase cycle to perform read operations, which is useful for executing code from other memory regions while background writes are occurring.

What is the function of the /HOLD pin?

When the Quad Enable (QE) bit is cleared, the /HOLD pin can be used to pause serial communications without resetting the clocking sequence. During hold, the output goes high impedance, and input/clock signals are ignored until the hold signal is released.

Can the device be reset via hardware?

Yes, if configured via Status Register-3, the /HOLD pin can function as a hardware /RESET pin. Driving this pin low for at least 1us resets the device to its initial power-on state, interrupting any ongoing operations.