The 820155 is a memory module from Micron Technology Inc.

• Category: Integrated Circuits (ICs) - Memory - Memory
• Memory Type: 4Gbit SDRAM - DDR3 memory with a volatile memory type
• Memory Size: 4Gbit
• Access Time: 13.5 ns
• Voltage Supply: 1.425V to 1.575V
• Mounting: Surface mountable
• Package: 82-FBGA package
• Operating Temperature: 0°C to 95°C
• Memory Format: DRAM
• Clock Frequency: 667 MHz
• Programmable: Not programmable
• Memory Interface: Parallel memory interface applications
• Base Product Number: MT41J512M8
• Status: Currently obsolete