BY25Q64ESSIG(T)

Memory IC Overview

The BY25Q64ESSIG(T) is a 64M-bit SPI NOR flash memory by BYTe Semiconductor, housed in an 8-SOP package. It supports Standard, Dual, and Quad SPI interfaces with clock rates up to 120MHz for fast read operations. The device operates on a single 2.7V to 3.6V supply voltage and features flexible architecture with 4KB sectors and 32/64KB blocks. Key electrical parameters include a maximum active current of 9mA and standby power consumption of 0.7uA. It offers typical endurance of 100k program-erase cycles and data retention of 20 years.

Memory IC Feature Summary

• Supports standard, dual, and quad SPI protocols for versatile interface compatibility.
• Includes hardware and software write protection mechanisms with configurable block protect bits.
• Features three 1024-byte security registers with One-Time Programmable (OTP) lock capabilities.
• Provides Execute In Place (XIP) operation with continuous read support.

Memory IC Applications

• Firmware storage for microcontrollers and embedded systems
• Code execution directly from memory (XIP)
• Data logging and configuration storage

Memory IC Procurement Notes

Verify the ordering suffix 'T' corresponds to tube packaging as specified in the datasheet. Confirm the specific pin pitch (150mil or 208mil) required for your PCB footprint, as both are available within the SOP8 family. Ensure the component meets RoHS compliance standards if applicable to your manufacturing process.

Memory IC Selection Notes

Select this part when a 64Mbit capacity is required with high-speed Quad SPI access. It is suitable for designs needing robust write protection via hardware pins or software commands. Consider the operating temperature range (-40°C to +85°C) to ensure it matches your environmental constraints compared to industrial variants.

Memory IC Part Context

This component belongs to the BY25Q64ES series of Serial Peripheral Interface Flash memories. It is designed for applications requiring non-volatile storage with high reliability. The series supports uniform sector and block architectures, allowing for flexible memory management and efficient erase operations across the array.

Memory IC Replacement Considerations

Check for compatible parts from other manufacturers offering identical 64Mbit density and SOP8 packaging. Verify that substitute components support the same Quad SPI instructions and voltage ranges to ensure functional equivalence without redesigning the host system.

Memory IC FAQ

How does the /WP pin function in Quad mode?

In Quad mode, the /WP pin functions as IO2 for bidirectional data transfer. The hardware write protection feature is disabled when the Quad Enable (QE) bit is set to 1.

What is the purpose of the HOLD/RST bit in Status Register 3?

The HOLD/RST bit configures the /HOLD pin's function. When set to 0, it acts as a hold pin; when set to 1, it functions as a hardware reset pin.