GENERAL DESCRIPTION
The IS25LQ025/512/010/020/040B (256K/512K/1M/2M/4Mbit) Serial Flash memory offers a storage solution with flexibility and performance in a simplified pin count package. ISSI’s “Industry Standard Serial Interface” is for systems that have limited space, pins, and power. The IS25LQ025/512/010/020/040B 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 also serve as multi-function I/O pins in Dual and Quad modes (see pin descriptions). The IS25xQ series of Flash is ideal for code shadowing to RAM, execute in place (XIP) operations, and storing non-volatile data.
FEATURES
• Industry Standard Serial Interface
- IS25LQ040B: 4Mbit/ 512Kbyte
- IS25LQ020B: 2Mbit/ 256Kbyte
- IS25LQ010B: 1Mbit/ 128Kbyte
- IS25LQ512B: 512Kbit/ 64Kbyte
- IS25LQ025B: 256Kbit/ 32Kbyte
- 256-bytes per Programmable Page Standard
- Standard SPI/Dual/Quad Multi-I/O SPI
- Supports Serial Flash Discoverable Parameters
(SFDP)
• High Performance Serial Flash (SPI)
- 104 MHz SPI/Dual/Quad Multi-I/O SPI
- 416 MHz equivalent Quad SPI
- 52MB/S Continuous Data Throughput
- Supports SPI Modes 0 and 3
- More than 100,000 erase/program cycles
- More than 20-year data retention
• Efficient Read and Program modes
- Low Instruction Overhead Operations
- Continuous data read with Byte Wrap around
- Allows XIP operations (execute in place)
- Outperforms X16 Parallel Flash
• Flexible & Cost Efficient Memory Architecture
- Uniform 4Kbyte Sectors or 32/64Kbyte Blocks
- Flexible 4, 32, 64Kbyte, or Chip Erase
- Standard Page Program 1 to 256 bytes
- Program/Erase Suspend and Resume
• Low Power with Wide Temp. Ranges
- Single 2.3V to 3.6V Voltage Supply
- 10 mA Active Read Current
- 8 µA Standby Current
- Deep Power Down
- Temp Grades:
Extended: -40°C to +105°C
V Grade: -40°C to +125°C
Auto Grade: -40°C to +125°C
• Advanced Security Protection
- Software and Hardware Write Protection
- 4x256-Byte dedicated security area with
user-lockable bits, (OTP) One Time
Programmable Memory
- 128 bit Unique ID for each device
• Industry Standard Pin-out & Pb-Free Packages1
- JB = 8-pin SOIC 208mil
- JN = 8-pin SOIC 150mil
- JD = 8-pin TSSOP 150mil
- JV = 8-pin VVSOP 150mil
- JK = 8-contact WSON 6x5mm
- JU = 8-contact USON 2x3mm
- KGD (call factory)
Note1: IS25LQ040B (not available in JD)