DDR 1GB Transcend JetRam

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.

Features

• 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)

In range since: 27.10.2004

data sheet