GENERAL DESCRIPTION
The IS25LQ040 is 4 Mbit Serial Peripheral Interface (SPI) Flash memories, providing single-, dual or quadoutput. The devices are designed to support a 33 MHz fclock rate in normal read mode, and 104 MHz in fast read (Quad output is 100MHz), the fastest in the industry. The devices use a single low voltage power supply, ranging from 2.3 Volt to 3.6 Volt, to perform read, erase and program operations. The devices can be programmed in standard EPROM programmers.

FEATURES
• Single Power Supply Operation
    - Low voltage range: 2.3 V - 3.6 V
• Memory Organization
    - IS25LQ040: 512K x 8 (4 Mbit)
• Cost Effective Sector/Block Architecture
    - 4Mb : Uniform 4KByte sectors / sixteen uniform 64KByte blocks
• Serial Peripheral Interface (SPI) Compatible
    - Supports single-, dual- or quad-output
    - Supports SPI Modes 0 and 3
    - Maximum 33 MHz clock rate for normal read
    - Maximum 104 MHz clock rate for fast read
    - Maximum 208MHz clock rate equivalent Dual SPI
    - Maximum 400MHz clock rate equivalent Quad SPI
• Byte Program Operation
    - Typical 10 us/Byte
• Page Program (up to 256 Bytes) Operation
    - Maximum 0.7ms per page program
• Sector, Block or Chip Erase Operation
    - Sector Erase (4KB) → 150ms (Typ)
    - Block Erase (64KB) → 500ms (Typ)
    - Chip Erase → 1s (4Mb)
• Low Power Consumption
    - Max 12 mA active read current
    - Max 20 mA program/erase current
    - Max 50 uA standby current
• Hardware Write Protection
    - Protect and unprotect the device from write operation by Write Protect (WP#) Pin
• Software Write Protection
    - The Block Protect (BP3, BP2, BP1, BP0) bits allow partial or entire memory to be configured as read-only
• High Product Endurance
    - Guaranteed 100,000 program/erase cycles per single sector
    - Minimum 20 years data retention
• Industrial Standard Pin-out and Package
    - 8-pin 208mil SOIC
    - 8-pin 150mil SOIC
    - 8-pin 150mil VVSOP
    - 8-contact WSON
    - PDIP
    - Lead-free (Pb-free), package
• Additional 256-byte Security information one-time programmable (OTP) area
• Special protect function
    - Safe guard function (Appendix 1)
    - Sector unlock function (Appendix 2)