Flash Memory serial

The AT25XE041B is a serial interface Flash memory device designed for use in a wide variety of high-volume consumer based applications in which program code is shadowed from Flash memory into embedded or external RAM for execution. The flexible erase architecture of the AT25XE041B, with its page erase granularity it is ideal for data storage as well, eliminating the need for additional data storage devices.The erase block sizes of the AT25XE041B have been optimized to meet the needs of today"s code and data storage applications. By optimizing the size of the erase blocks, the memory space can be used much more efficiently. Because certain code modules and data storage segments must reside by themselves in their own erase regions, the wasted and unused memory space that occurs with large sectored and large block erase Flash memory devices can be greatly reduced. This increased memory space efficiency allows additional code routines and data storage segments to be added while still maintaining the same overall device density.The device also contains a specialized OTP (One-Time Programmable) Security Register that can be used for purposes such as unique device serialization, system-level Electronic Serial Number (ESN) storage, locked key storage, etc. Specifically designed for use in many different systems, the AT25XE041B supports read, program, and erase operations with a wide supply voltage range of 1.65V to 3.6V. No separate voltage is required for programming and erasing.

• Single 1.65V - 3.6V Supply
• Serial Peripheral Interface (SPI) Compatible
  • Supports SPI Modes 0 and 3
  • Supports Dual-I/O Operation
• 85MHz Maximum Operating Frequency
  • Clock-to-Output (TV) of 6 ns
• Flexible, Optimized Erase Architecture for Code + Data Storage Applications
  • Uniform 4-Kbyte Block Erase
  • Uniform 32-Kbyte Block Erase
  • Uniform 64-Kbyte Block Erase
• Full Chip Erase
• Hardware Controlled Locking of Protected Sectors via WP Pin
  • 128-byte, One-Time Programmable (OTP) Security Register
  • 64 bytes factory programmed with a unique identifier
  • 64 bytes user programmable
• Flexible Programming
  • Byte/Page Program (1 to 256 Bytes)
• Dual-Input Byte/Page Program (1 to 256 Bytes)
• Sequential Program Mode Capability
• Fast Program and Erase Times
  • 2ms Typical Page Program (256 Bytes) Time
  • 45ms Typical 4-Kbyte Block Erase Time
  • 360ms Typical 32-Kbyte Block Erase Time
  • 720ms Typical 64-Kbyte Block Erase Time
• Automatic Checking and Reporting of Erase/Program Failures
• Software Controlled Reset
• JEDEC Standard Manufacturer and Device ID Read Methodology
• Low Power Dissipation
  • 200nA Ultra Deep Power Down current (Typical)
  • 5µA Deep Power-Down Current (Typical)
  • 25uA Standby current (Typical)
  • 3.5mA Active Read Current (Typical)
• Endurance: 100,000 Program/Erase Cycles
• Data Retention: 20 Years
• Complies with Full Industrial Temperature Range
• Industry Standard Green (Pb/Halide-free/RoHS Compliant) Package Options
  • 8-lead SOIC (150-mil)
  • 8-pad Ultra Thin DFN (2 x 3 x 0.6 mm)
  • 8-pad Ultra Thin DFN (5 x 6 x 0.6 mm)
  • 8-lead TSSOP Package
  • 8-ball WLCSP (3 x 2 x 3 ball matrix)