Micron MT4HTF3264AY
256MB DDR2 SDRAM UDIMM
FEATURES
DDR2 SDRAM UDIMM MT4HTF1664AY – 128MB MT4HTF3264AY – 256MB MT4HTF6464AY – 512MBFEATURES
● 240-pin, unbuffered dual in-line memory module (UDIMM)● Fast data transfer rates: PC2-3200, PC2-4200, PC2-5300, or PC2-6400
● 128MB (16 Meg x 64), 256MB (32 Meg x 64), 512MB (64 Meg x 64)
● VDD = VDDQ = 1.8V
● VDDSPD = 1.7–3.6V
● JEDEC-standard 1.8V I/O (SSTL_18-compatible)
● Differential data strobe (DQS, DQS#) option
● 4n-bit prefetch architecture
● Multiple internal device banks for concurrent operation
● Programmable CAS latency (CL)
● Posted CAS additive latency (AL)
● WRITE latency = READ latency - 1 tCK
● Programmable burst lengths (BL): 4 or 8
● Adjustable data-output drive strength
● 64ms, 8192-cycle refresh
● On-die termination (ODT)
● Serial presence detect (SPD) with EEPROM
● Gold edge contacts
● Single rank Figure 1: 240-Pin UDIMM (MO-237 R/C C) Module height 30.0mm (1.18