IS25LP256D-RMLE-TR

The IS25LP256D and IS25WP256D Serial Flash memory offers a versatile storage solution with high flexibility and performance in a simplified pin count package. ISSI’s “Industry Standard Serial Interface” Flash is for systems that require limited space, a low pin count, and low power consumption. The device is accessed through a 4-wire SPI Interface consisting of a Serial Data Input (SI), Serial Data Output (SO), Serial Clock (SCK), and Chip Enable (CE#) pins, which can also be configured to serve as multi-I/O (see pin descriptions).

The device supports Dual and Quad I/O as well as standard, Dual Output, and Quad Output SPI. Clock frequencies of up to 166MHz allow for equivalent clock rates of up to 664MHz (166MHz x 4) which equates to 83Mbytes/s of data throughput. The IS25xP series of Flash adds support for DTR (Double Transfer Rate) commands that transfer addresses and read data on both edges of the clock. These transfer rates can outperform 16-bit Parallel Flash memories allowing for efficient memory access to support XIP (execute in place) operation.

The memory array is organized into programmable pages of 256 bytes. This family supports page program mode where 1 to 256 bytes of data are programmed in a single command. QPI (Quad Peripheral Interface) supports 2- cycle instruction further reducing instruction times. Pages can be erased in groups of 4Kbyte sectors, 32Kbyte blocks, 64Kbyte blocks, and/or the entire chip. The uniform sector and block architecture allows for a high degree of flexibility so that the device can be utilized for a broad variety of applications requiring solid data retention.

• Industry Standard Serial Interface
  • IS25LP256D: 256Mbit/32Mbyte
  • IS25WP256D: 256Mbit/32Mbyte
  • 3 or 4 Byte Addressing Mode
  • Supports Standard SPI, Fast, Dual, Dual I/O, Quad, Quad I/O, SPI DTR, Dual I/O DTR, Quad I/O DTR, and QPI
  • Software & Hardware Reset
  • Supports Serial Flash Discoverable Parameters (SFDP)
• High Performance Serial Flash (SPI)
  • 80MHz Normal Read
  • Up to166Mhz Fast Read:
    • -166MHz at Vcc=2.7V to 3.6V (1)
    • -133MHz at Vcc=2.3V to 3.6V
    • 104MHz at Vcc=1.65V to 1.95V
  • Up to 80MHz DTR (Dual Transfer Rate)
  • Equivalent Throughput of 664 Mb/s
  • Selectable Dummy Cycles
  • Configurable Drive Strength
  • Supports SPI Modes 0 and 3
  • More than 100,000 Erase/Program Cycles
  • More than 20-year Data Retention
• Flexible & Efficient Memory Architecture
  • Chip Erase with Uniform Sector/Block Erase (4/32/64 Kbyte