Description
The EBS25EC8APFA is 32M words × 72 bits, 1 bank Synchronous Dynamic RAM Unbuffered Module, mounted 9 pieces of 256M bits SDRAM sealed in TSOP package. This module provides high density and large quantities of memory in a small space without utilizing the surface mounting technology. Decoupling capacitors are mounted on power supply line for noise reduction.

Features
• Fully compatible with 8 bytes DIMM: JEDEC standard outline
• 168-pin socket type dual in line memory module (DIMM)
    - PCB height: 34.93mm (1.38inch )
    - Lead pitch: 1.27mm
• 3.3V power supply
• Clock frequency: 133MHz (max.)
• LVTTL interface
• Data bus width: × 72 ECC
• Single pulsed /RAS
• 4 Banks can operates simultaneously and independently
• Burst read/write operation and burst read/single write operation capability
• Programmable burst length (BL): 1, 2, 4, 8
• 2 variations of burst sequence
    - Sequential
    - Interleave
• Programmable /CAS latency (CL): 2, 3
• Byte control by DQMB
• Refresh cycles: 8192 refresh cycles/64ms
• 2 variations of refresh
    - Auto refresh
    - Self refresh