Transcend JM388D643A-5L JetRam DDR 1GB 400 MHz

Model/varenr.: 102336
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Beskrivelse - Specifikationer



The JM388D643A-5L is a 128Mx64bits Double Data Rate SDRAM high-density Module for DDR400. The JM388D643A-5L consists of 16pcs CMOS 64Mx8 bits Double Data Rate SDRAMs in 66 pin TSOP-II 400mil packages and a 2048 bits serial EEPROM on a 184-pin printed circuit board. The JM388D643A-5L is a Dual In-Line Memory Module and is intended for mounting into 184-pin 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 operation frequencies, programmable latencies allow the same device to be useful for a variety of high bandwidth, high performance memory system applications.


  • RoHS compliant products.
  • Power supply: VDD: 2.6V ± 0.1V, VDDQ: 2.6V ±0.1V
  • Max clock Freq: 200MHZ.
  • Double-data-rate architecture; two data transfers per clock cycle
  • Differential clock inputs (CK and /CK)
  • Burst Mode Operation.
  • Auto and Self Refresh.
  • Data I/O transactions on both edge of data strobe.
  • Edge aligned data output, center aligned data input.
  • Serial Presence Detect (SPD) with serial EEPROM
  • SSTL-2 compatible inputs and outputs.
  • MRS cycle with address key programs. CAS Latency (Access from column address): 3
  • Burst Length (2, 4, 8 )
  • Data Sequence (Sequential & Interleave)

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