BY25Q64ASTIG(T)

Memory IC Overview

The BY25Q64ASTIG(T) is a 64 Mbit SPI NOR Flash memory by BYTe Semiconductor. It supports Standard, Dual, and Quad SPI interfaces with clock rates up to 108 MHz. The device operates on a single 2.7V to 3.6V supply. Key features include page programming up to 256 bytes, sector/Block/chip erase capabilities, and flexible software/hardware write protection. It offers industrial temperature ranges (-40°C to +85°C or +105°C), high endurance (100k cycles), and long data retention (20 years).

Memory IC Feature Summary

• Supports Standard, Dual, and Quad SPI modes for flexible data transfer speeds.
• Includes comprehensive write protection via software commands and hardware /WP pin.
• Features programmable security registers with One-Time Programmable (OTP) lock bits.
• Provides Erase/Program Suspend and Resume functionality for efficient system management.

Memory IC Applications

• Firmware storage in embedded systems and microcontrollers.
• Code execution in place (XIP) applications requiring fast read access.
• Data logging and configuration storage in industrial IoT devices.
• Boot code storage for network equipment and consumer electronics.

Memory IC Procurement Notes

Verify the specific suffix 'T' indicates tube packaging if required for assembly processes. Confirm the temperature grade matches the application environment, as the AS series supports multiple industrial ranges. Ensure the host system voltage aligns with the 2.7V-3.6V operating range. Check for RoHS3 compliance requirements against local regulations.

Memory IC Selection Notes

Select this component when a 64 Mbit capacity is needed with high-speed Quad SPI support. Consider the 8-SOP package availability for through-hole or standard surface mount needs. Evaluate the write protection requirements; this part offers both hardware and software locking mechanisms. Compare power consumption specs against battery-operated constraints if applicable.

Memory IC Part Context

This part belongs to the BY25Q64AS family of SPI NOR Flash memories. It shares architectural similarities with other 64 Mbit devices from BYTe and competitors like GD25Q64E. The 'AS' designation typically denotes the core technology and interface capabilities, while suffixes define packaging and temperature grades.

Memory IC Replacement Considerations

BY25Q64ESTIG(R) is listed as a parameter-equivalent alternative within the same manufacturer's portfolio. Verify pin compatibility and electrical specifications before substitution. Cross-referencing with industry-standard parts like W25Q64 or GD25Q64 may require firmware adjustments due to potential differences in command sets or status register behaviors.

Memory IC FAQ

How does the Quad Enable (QE) bit affect the /WP and /HOLD pins?

When the QE bit is set to 1, the /WP and /HOLD functions are disabled. These pins then operate as dedicated bidirectional I/O pins (IO2 and IO3) for Quad SPI data transfer.

What is the maximum page size for programming operations?

The device supports serial-input Page Programming of up to 256 bytes per operation.

Can the security registers be unlocked once they are locked?

No. The Lock Bits (LB) for the security registers are One-Time Programmable (OTP). Once set to 1, the security registers become permanently read-only and cannot be unlocked.