BY25Q16BSMIG(R)

Memory IC Overview

The BY25Q16BSMIG(R) is a 16 Mbit Serial Peripheral Interface (SPI) NOR Flash memory manufactured by BYTe Semiconductor. It supports Standard, Dual, and Quad SPI modes 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. Key performance metrics include a Fast Read clock rate of 108 MHz with a 30 pF load, a typical page program time of 0.6 ms, and a typical sector erase time of 50 ms. It features a flexible architecture with 4 K-byte sectors and 32/64 K-byte blocks.

Memory IC Feature Summary

• Supports multiple interface modes including Standard SPI, Dual SPI, Quad SPI, and QPI for optimized data transfer speeds.
• Includes hardware and software write protection mechanisms with three 256-byte security registers featuring OTP locks.
• Features a flexible memory architecture allowing sector and block-level erasing with suspend and resume capabilities.
• Designed for low power consumption with dedicated active and deep power-down current specifications.

Memory IC Applications

• Execute In Place (XIP) operations in embedded systems
• Consumer electronics firmware storage
• Industrial control system code storage
• IoT device application storage

Memory IC Procurement Notes

Verify the specific package variant required, as the datasheet lists SOP8 150mil/208mil and USON 2x3mm options. Confirm that the ordering suffix corresponds to the desired physical footprint and packing quantity. Ensure compatibility with the host system's voltage levels and SPI mode requirements before finalizing procurement.

Memory IC Selection Notes

Select this component when a 16 Mbit capacity is required with support for high-speed Quad I/O and QPI interfaces. It is suitable for applications needing robust write protection via security registers and flexible block protection schemes. Consider the operating temperature range and voltage supply constraints to ensure alignment with the target system environment.

Memory IC Part Context

The BY25Q16BS series belongs to BYTe Semiconductor's line of SPI NOR Flash memories. These devices are designed for general-purpose non-volatile storage, offering high reliability and endurance. The product family supports various packaging options to accommodate different board space and thermal requirements.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: BY25Q16BSSJG(R)

Memory IC FAQ

How does the device handle the transition between SPI and QPI modes?

The device switches from Standard/Dual/Quad SPI mode to QPI mode using the 'Enter QPI (38h)' instruction. This requires the Quad Enable (QE) bit in Status Register-2 to be set to 1 beforehand. The default state upon power-up is Standard/Dual/Quad SPI mode.

What is the function of the /WP pin in Quad SPI mode?

When the Quad Enable (QE) bit is set to 1, the /WP pin functions as IO2 for input and output during Quad instructions. The hardware write protect function is disabled in this mode.

Can the Security Registers be modified after they are locked?

No. The LB bits in the status register provide One-Time Programmable (OTP) lock functionality for the Security Registers. Once set to 1, the security registers become read-only permanently.