MT5VDDT3272HY-335F2 Micron Technology Inc, MT5VDDT3272HY-335F2 Datasheet - Page 6

• Manufacturer Part Number: MT5VDDT3272HY-335F2
• Description: MODULE DDR 256MB 200-SODIMM
• Manufacturer: Micron Technology Inc

Specifications of MT5VDDT3272HY-335F2

• Memory Type: DDR SDRAM
• Memory Size: 256MB
• Speed: 333MT/s
• Package / Case: 200-SODIMM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

General Description
Serial Presence-Detect (SPD) Operation
PDF: 09005aef80a8e793/Source: 09005aef80a8e767
dd5c16_32x72h.fm - Rev. F 2/07 EN
The MT5VDDT1672H and MT5VDDT3272H are high-speed CMOS, dynamic random-
access, 128MB and 256MB memory modules organized in a x72 (ECC) configuration.
DDR SDRAM modules use internally configured quad-bank DDR SDRAM devices.
DDR SDRAM modules use a double data rate architecture to achieve high-speed opera-
tion. The double data rate architecture is essentially a 2n-prefetch architecture with an
interface designed to transfer two data words per clock cycle at the I/O pins. A single
read or write access for DDR SDRAM modules effectively consists of a single 2n-bit wide,
one-clock-cycle data transfer at the internal DRAM core and two corresponding n-bit
wide, one-half-clock-cycle data transfers at the I/O pins.
A bidirectional data strobe (DQS) is transmitted externally, along with data, for use in
data capture at the receiver. DQS is an intermittent strobe transmitted by the DDR
SDRAM during READs and by the memory controller during WRITEs. DQS is edge-
aligned with data for READs and center-aligned with data for WRITEs.
DDR SDRAM modules operate from differential clocks (CK, CK#); the crossing of CK
going HIGH and CK# going LOW will be referred to as the positive edge of CK.
Commands are registered at every positive edge of CK. Input data is registered on both
edges of DQS, and output data is referenced to both edges of DQS, as well as to both
edges of CK.
DDR SDRAM modules incorporate serial presence-detect (SPD). The SPD function is
implemented using a 2,048-bit EEPROM. This nonvolatile storage device contains
256 bytes. The first 128 bytes can be programmed by Micron to identify the module type
and various SDRAM organizations and timing parameters. The remaining 128 bytes of
storage are available for use by the customer. System READ/WRITE operations between
the master (system logic) and the slave EEPROM device (DIMM) occur via a standard I
bus using the DIMM’s SCL (clock) and SDA (data) signals, together with SA(2:0), which
provide eight unique DIMM/EEPROM addresses. Write protect (WP) is tied to V
module, permanently disabling hardware write protect.
128MB, 256MB: (x72, ECC, SR) 200-Pin DDR SODIMM
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Micron Technology, Inc., reserves the right to change products or specifications without notice.
General Description
©2004 Micron Technology, Inc. All rights reserved.
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