mt18vdvf12872y-40b Micron Semiconductor Products, mt18vdvf12872y-40b Datasheet

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mt18vdvf12872y-40b

Manufacturer Part Number
mt18vdvf12872y-40b
Description
1gb X72, Ecc, Sr 184-pin Ddr Vlp Rdimm
Manufacturer
Micron Semiconductor Products
Datasheet
DDR SDRAM VLP RDIMM
MT18VDVF12872 – 1GB
For component data sheets, refer to Micron’s Web site:
Features
• 184-pin, very low profile registered dual in-line
• Fast data transfer rates: PC2700 or PC3200
• 1GB (128 Meg x 72)
• Supports ECC error detection and correction
• V
• V
• 2.5V I/O (SSTL_2-compatible)
• Internal pipelined double data rate (DDR)
• Bidirectional data strobe (DQS) transmitted/
• Differential clock inputs (CK and CK#)
• Multiple internal device banks for concurrent
• Single rank
• Selectable burst lengths (BL): 2, 4, or 8
• Auto precharge option
• Auto refresh and self refresh modes: 7.8125µs
• Serial presence-detect (SPD) with EEPROM
• Selectable CAS latency (CL) for maximum
• Gold edge contacts
Table 1:
PDF: 09005aef81c7380b/Source: 09005aef81c7380e
DVF18C_128x72.fm - Rev. C 11/07 EN
memory module (VLP RDIMM)
(-40B: V
2n-prefetch architecture
received with data—that is, source-synchronous
data capture
operation
maximum average periodic refresh interval
compatibility
DD
DDSPD
Speed
Grade
-40B
-335
= V
DD
DD
= +2.3V to +3.6V
Q = +2.5V
= V
Key Timing Parameters
Products and specifications discussed herein are subject to change by Micron without notice.
Nomenclature
DD
Notes:
Industry
Q = +2.6V)
PC3200
PC2700
1. The values of
actual DDR SDRAM device specifications are 15ns.
CL = 3
400
t
Data Rate (MT/s)
RCD and
CL = 2.5
333
333
t
www.micron.com
RP for -335 modules show 18ns to align with industry specifications;
1
1GB (x72, ECC, SR): 184-Pin DDR VLP RDIMM
Figure 1:
Notes: 1. Contact Micron for industrial temperature
Options
• Operating temperature
• Package
• Memory clock, speed, CAS latency
CL = 2
PCB height: 18.29mm (0.72in)
266
266
– Commercial (0°C ≤ T
– Industrial (–40°C ≤ T
– 184-pin DIMM (standard)
– 184-pin DIMM (Pb-free)
– 5.0ns (200 MHz), 400 MT/s, CL = 3
– 6.0ns (166 MHz), 333 MT/s, CL = 2.5
Micron Technology, Inc., reserves the right to change products or specifications without notice.
2. CL = CAS (READ) latency; registered mode
module offerings.
adds one clock cycle to CL.
184-Pin VLP RDIMM (MO-206)
t
(ns)
RCD
15
18
A
A
1
(ns)
≤ +85°C)
≤ +70°C)
t
15
18
RP
©2005 Micron Technology, Inc. All rights reserved.
2
(ns)
t
55
60
RC
Marking
Features
None
-40B
-335
Notes
G
Y
I
1

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mt18vdvf12872y-40b Summary of contents

Page 1

... 400 333 266 – 333 266 t t RCD and RP for -335 modules show 18ns to align with industry specifications; Micron Technology, Inc., reserves the right to change products or specifications without notice. 1 184-Pin VLP RDIMM (MO-206) 1 ≤ +70°C) A ≤ +85° module offerings. ...

Page 2

... Base device: MT46V128M4, Module 2 Part Number Density MT18VDVF12872G-40B__ MT18VDVF12872Y-40B__ MT18VDVF12872G-335__ MT18VDVF12872Y-335__ Notes: 1. Data sheets for the base device can be found on Micron’s Web site. 2. All part numbers end with a two-place code (not shown) that designates component and PCB revisions. Consult factory for current revision codes. Example: MT18VDVF12872Y-335F1. ...

Page 3

Pin Assignments and Descriptions Table 4: Pin Assignments 184-Pin VLP RDIMM Front Pin Symbol Pin Symbol Pin Symbol Pin Symbol DQ17 47 REF 2 DQ0 25 DQS2 DQ1 ...

Page 4

... Data strobe: Output with read data, input with write data. DQS is edge- aligned with read data, center-aligned with write data. Used to capture data. I/O Serial presence-detect data: SDA is a bidirectional pin used to transfer addresses and data into and out of the presence-detect portion of the module. Supply Power supply: +2.5V ±0.2V (-40B: +2.6V ±0.1V). Supply Serial EEPROM positive power supply: +2 ...

Page 5

Functional Block Diagram Figure 2: Functional Block Diagram V SS RS0# U6, U17 R RAS# RRAS#: DDR SDRAM e CAS# RCAS#: DDR SDRAM g CKE0 RCKE0: DDR SDRAM i WE# s RWE#: DDR SDRAM t A0–A12 RA0–RA12: DDR SDRAM e ...

Page 6

... 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 are 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 ...

Page 7

... Electrical Specifications Stresses greater than those listed in Table 6 may cause permanent damage to the module. This is a stress rating only, and functional operation of the module at these or any other conditions outside those indicated on the device data sheet is not implied. Exposure to absolute maximum rating conditions for extended periods may adversely affect reliability ...

Page 8

I Specifications DD Table 8: I Specifications and Conditions – 1GB DD Values are shown for the MT46V128M4 DDR SDRAM only and are computed from values specified in the 512Mb (128 Meg x 4) component data sheet Parameter/Condition Operating one ...

Page 9

... Timing and switching specifications for the register listed above are critical for proper oper- ation of the DDR SDRAM RDIMM. These are meant subset of the parameters for the specific device used on the module. Detailed information for this register is available in JEDEC standard JESD82. ...

Page 10

Table 10: PLL Specifications CVF857 device or equivalent JESD82-1A Parameter DC high-level input voltage DC low-level input voltage Input voltage (limits) Input differential-pair cross voltage Input differential voltage Input differential voltage Input current Dynamic supply current Dynamic supply current Dynamic ...

Page 11

Serial Presence-Detect Table 12: Serial Presence-Detect EEPROM DC Operating Conditions Parameter/Condition Supply voltage Input high voltage: Logic 1; All inputs Input low voltage: Logic 0; All inputs Output low voltage 3mA OUT Input leakage current GND ...

Page 12

... TYP TYP TYP 64.77 (2.55) TYP 120.65 (4.75) TYP Back view U16 U14 U15 U18 U19 U17 73.28 (2.88) tive owners. 12 Module Dimensions U9 U10 U11 U11 18.42 (0.725) 18.16 (0.715) 10.0 (0.394) TYP Pin 92 49.53 (1.95) TYP U20 U21 U22 3.8 (0.15) TYP Pin 93 TYP Micron Technology, Inc., reserves the right to change products or specifications without notice. ...

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