DDR400 is a dual in-line memory module and is intended for mounting onto 184-pins edge connector sockets. Synchronous design allows precise cycle control with the use of system clock. Data I/O transactions are possible on both edges of DQS. Range of operating frequencies, programmable latencies and burst lengths allow the same device to be useful for a variety of high bandwidth, high performance memory system applications.
The DDR400 module for desktop is offered in quantities in 128MB up to 1GB capacities.
‧ DLL aligns DQ and DQS transition with CK transition
‧ Double-data-rate architecture
‧ Bi-directional data strobe (DQS)
‧ Differential clock inputs(CK and /CK)
‧ Auto refresh and self refresh
‧ 8192 refresh cycles / 64ms
‧ Power supply: VDD, VDDQ: 2.7V+/-0.1V
‧ Programmable Burst length (2,4,8)
‧ Serial Presence Detect with EEPROM
‧ Module bank :one physical bank
‧ Height 31.75mm, six layers
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