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NANYA MEMORY RAM

NT256T64UH4A0F-5A

256MB PC2-3200 DDR2 DIMM

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DESCRIPTION:

NT256T64UH4A0F IS 240-Pin Double Data Rate 2 (DDR2) Synchronous DRAM Unbuffered Dual In-Line Memory Module (UDIMM), organized as a one-rank 64Mx64 high-speed memory array. Modules use four 32Mx16 DDR2 SDRAMs in FBGA packages. These DIMMs manufactured using raw cards developed for broad industry use as reference designs. The use of these common design files minimizes electrical variation between suppliers. All NANYA DDR2 SDRAM DIMMs provide a high-performance, flexible 8-byte interface a 5.25" long space-saving footprint. The DIMM is intended for use in applications operating to 200 MHz (266MHz) clock speeds and achieves high-speed data transfer rates to 400 MHz (533MHz). Prior to any access operation, the device latency and burst type/ length/operation type must be

programmed into the DIMM by address inputs A0-A13 and I/O inputs BA0 and BA1 using the mode register set cycle. The DIMM uses serial presence-detect implemented via a serial 2,048-bit EEPROM using a standard IIC protocol. The first 128 bytes of serial PD data are programmed and locked during module assembly. The remaining 128 bytes are available for use by the customer.

SPECIFICATIONS:

Memory Category DRAM Chip
Density 2147484 kbits
Number of Words 32000 k
Bits per Word 64 bits
Package Type DIMM-240
Pins 240
Supply Voltage 1.8V
Access Time 0.5000 ns
Operating Temperature 0 to 70 C (32 to 158 F)

SHIPPINGS:

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Memory Category	DRAM Chip
Density	2147484 kbits
Number of Words	32000 k
Bits per Word	64 bits
Package Type	DIMM-240
Pins	240
Supply Voltage	1.8V
Access Time	0.5000 ns
Operating Temperature	0 to 70 C (32 to 158 F)