MT28EW128ABA1HJS-0SIT

The device is an asynchronous, uniform block, parallel NOR Flash memory device. READ, ERASE, and PROGRAM operations are performed using a single low-voltage supply. Upon power-up, the device defaults to read array mode.The main memory array is divided into uniform blocks that can be erased independently so that valid data can be preserved while old data is purged. PROGRAM and ERASE commands are written to the command interface of the memory. An on-chip program/ erase controller simplifies the process of programming or erasing the memory by taking care of all special operations required to update the memory contents. The end of a PROGRAM or ERASE operation can be detected and any error condition can be identified. The command set required to control the device is consistent with JEDEC standards.CE#, OE#, and WE# control the bus operation of the device and enable a simple connection to most microprocessors, often without additional logic.The device supports asynchronous random read and page read from all blocks of the array. It also features an internal program buffer that improves throughput by programming 512 words via one command sequence. A 128-word extended memory block overlaps addresses with array block 0. Users can program this additional space and then protect it to permanently secure the contents. The device also features different levels of hardware and software protection to secure blocks from unwanted modification.

• Single-level cell (SLC) process technology
• Density: 128Mb
• Supply voltage
  • VCC = 2.7–3.6V (program, erase, read)
  • VCCQ = 1.65 - VCC (I/O buffers)
• Asynchronous random/page read
  • Page size: 16 words or 32 bytes
  • Page access: 20ns
  • Random access: 70ns (VCC = VCCQ = 2.7-3.6V)
  • Random access: 75ns (VCCQ = 1.65-VCC)
• Buffer program (512-word program buffer)
  • 2.0 MB/s (TYP) when using full buffer program
  • 2.5 MB/s (TYP) when using accelerated buffer program (VHH)
• Word/Byte program: 25us per word (TYP)
• Block erase (128KB): 0.2s (TYP)
• Memory organization
  • Uniform blocks: 128KB or 64KW each
  • x8/x16 data bus
• Program/erase suspend and resume capability
  • Read from another block during a PROGRAM SUSPEND operation
  • Read or program another block during an ERASE SUSPEND operation
• Unlock bypass,