DDR3 SDRAM, 2Gbit, 800 MHz — what the ratings mean for the BOM
The Micron MT41J128M16JT-125:K TR is a 2Gbit DDR3 SDRAM organized as 128M x 16, clocked at 800 MHz with a 13.75 ns access time. The 800 MHz clock rate corresponds to a DDR3-1600 data rate — the I/O bus toggles at 1600 MT/s, which is the ceiling for the memory controller's timing closure. The 13.75 ns access time is the tRCD (RAS-to-CAS delay) typical for this speed bin; the controller must program this into its mode register during initialization. The 1.425 V to 1.575 V supply range covers the DDR3 nominal 1.5 V rail with margin for ripple and load transients. A DDR3L-compatible controller can run this part at 1.35 V only if the memory explicitly supports DDR3L — this part's supply range does not extend down to 1.35 V, so it is not rated for DDR3L operation. The 0°C to 95°C (TC) operating temperature range covers the commercial/industrial ambient band for equipment with forced airflow. The 95°C case temperature ceiling is the DRAM junction limit; a thermal camera on the 96-FBGA package during burn-in verifies the case stays under this figure.
The 96-TFBGA package (8x14 mm body, 0.8 mm ball pitch) is a standard DDR3 footprint. The 96-FBGA (8x14) supplier device package matches the JEDEC MO-207 variation for x16 DDR3. Supplied in Tape & Reel (TR) or Cut Tape (CT) — the reel quantity is the standard 13-inch reel for 96-ball BGA. The moisture sensitivity level (MSL) for this package is typically MSL-3; the floor life after opening the sealed bag is 168 hours at <30°C/60% RH before a bake cycle is required.
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