IS25LQ040B-JNLE-TR

Memory IC Overview

The IS25LQ040B-JNLE-TR is a 4 Mbit Serial Peripheral Interface (SPI) Flash memory manufactured by ISSI. It provides single-, dual, or quad-output capabilities with a maximum clock rate of 104 MHz in fast read mode. The device operates on a single low voltage power supply ranging from 2.3 V to 3.6 V. Memory organization consists of 512K x 8 bits. Key electrical parameters include a maximum active read current of 12 mA and a standby current of 50 uA. It supports SPI Modes 0 and 3 and features uniform 4 KByte sectors and sixteen 64 KByte blocks for erase operations.

Memory IC Feature Summary

• Supports single, dual, and quad output modes for flexible data transfer rates
• Features hardware write protection via the WP# pin to prevent unauthorized modifications
• Utilizes a cost-effective sector and block architecture for efficient data management

Memory IC Applications

• Embedded systems requiring non-volatile code storage
• Consumer electronics firmware repositories
• Industrial control system configuration memory

Memory IC Procurement Notes

Verify the specific suffix JNLE-TR against official ISSI documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with your system's voltage levels, as the device requires a 2.3 V to 3.6 V supply. Confirm moisture sensitivity handling requirements prior to assembly. Cross-reference the exact part number with manufacturer datasheets to validate any recent die revisions or packaging changes that may affect mechanical fit or electrical performance.

Memory IC Selection Notes

Select this component when a 4 Mbit capacity is required with high-speed quad SPI interface support. It is suitable for applications needing low power consumption and hardware-level write protection. Compare against other IS25LQ series variants if different capacities or package sizes are needed. Ensure the design accommodates the specified operating temperature range and voltage constraints for reliable long-term operation.

Memory IC Part Context

This part belongs to the IS25LQ series of serial flash memories from ISSI. The series is characterized by its compatibility with standard SPI interfaces and support for multiple output modes. The 'LQ' designation typically indicates specific voltage and feature sets within the broader NOR flash portfolio. This model represents a mid-density option in the lineup, balancing performance and storage needs for various embedded applications.

Memory IC Replacement Considerations

Check for direct substitutes within the IS25LQ family, such as IS25LQ020 for lower capacity or IS25LQ080 for higher density, ensuring pinout and electrical characteristics remain compatible. Verify that alternative manufacturers offer equivalent 4 Mbit QSPI parts with matching voltage ranges and package dimensions.