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What is MT16HTF25664A?

This electronic component, produced by the manufacturer "Micron", performs the same function as "2GB DDR2 SDRAM Unbuffered DIMM".


MT16HTF25664A Datasheet PDF - Micron

Part Number MT16HTF25664A
Description 2GB DDR2 SDRAM Unbuffered DIMM
Manufacturers Micron 
Logo Micron Logo 


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512MB, 1GB, 2GB: (x64, DR) 240-Pin DDR2 SDRAM UDIMM
Features
DDR2 SDRAM Unbuffered DIMM
MT16HTF6464A – 512MB
MT16HTF12864A – 1GB
MT16HTF25664A – 2GB
For component specifications, refer to the Micron’s Web site: www.micron.com/ddr2
Features
• 240-pin, unbuffered, dual in-line memory module
(UDIMM)
• Fast data transfer rates: PC2-3200, PC2-4200, PC2-
5300, or PC2-6400
• 512MB (64 Meg x 64), 1GB (128 Meg x 64), and 2GB
(256 Meg x 64)
• VDD = VDDQ = +1.8V
• VDDSPD = +1.7V to +3.6V
• JEDEC standard 1.8V I/O (SSTL_18-compatible)
• Differential data strobe (DQS, DQS#) option
• Four-bit prefetch architecture
• DLL to align DQ and DQS transitions with CK
• Multiple internal device banks for concurrent
operation
• Programmable CAS latency (CL)
• Posted CAS additive latency (AL)
• WRITE latency = READ latency - 1 tCK
• Programmable burst lengths: 4 or 8
• Adjustable data-output drive strength
• 64ms, 8,192-cycle refresh
• On-die termination (ODT)
• Serial presence-detect (SPD) with EEPROM
• Gold edge contacts
• Dual rank
Figure 1: 240-Pin DIMM (MO-237 R/C “B”)
PCB height: 29.97mm (1.18in)
Options
• Package
240-pin DIMM (lead-free)
• Frequency/CL1
2.5ns @ CL = 5 (DDR2-800)2
3.0ns @ CL = 5 (DDR2-667)3
3.75ns @ CL = 4 (DDR2-533)
5.0ns @ CL = 3 (DDR2-400)
• PCB height
29.97mm (1.18in)
Marking
Y
-80E
-667
-53E
-40E
Notes: 1. CL = CAS (READ) latency.
2. Not available in 512MB density.
3. Not available in 2GB density.
PDF: 09005aef80f09084/Source: 09005aef80f09068
HTF16C64_128_256x64AG.fm - Rev. D 5/06 EN
1 Micron Technology, Inc., reserves the right to change products or specifications without notice.
©2003 Micron Technology, Inc. All rights reserved.
Products and specifications discussed herein are subject to change by Micron without notice.

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MT16HTF25664A equivalent
512MB, 1GB, 2GB: (x64, DR) 240-Pin DDR2 SDRAM UDIMM
Pin Assignments and Descriptions
Table 5:
Pin Descriptions
Pin numbers may not correlate with symbols; refer to Table 4 on page 3 for more information
Pin Numbers
120
Symbol
SCL
101, 239, 240
SA0–SA2
3, 4, 9, 10, 12, 13, 21, 22, 24,
25, 30, 31, 33, 34, 39, 40, 80,
81, 86, 87, 89, 90, 95, 96, 98,
99, 107, 108, 110, 111, 116,
117, 122, 123, 128, 129, 131,
132, 140, 141, 143, 144, 149,
150, 152, 153, 158, 159, 199,
200, 205, 206, 208, 209, 214,
215, 217, 218, 226, 227, 229,
230, 235, 236
6, 7, 15, 16, 27, 28, 36, 37,
83, 84, 92, 93, 104, 105, 113,
114,
DQ0–DQ63
DQS0–DQS7,
DQS0#–DQS7#
119 SDA
53, 59, 64, 67, 69, 172, 178,
184, 187, 189, 197,
51, 56, 62, 72, 75, 78, 170,
175, 181, 191, 194,
1
2, 5, 8, 11, 14, 17, 20, 23, 26,
29, 32, 35, 38, 41, 44, 47, 50,
65, 66, 79, 82, 85, 88, 91, 94,
97,100, 103, 106, 109,112,
115, 118, 121, 124, 127, 130,
133, 136, 139, 142, 145, 148,
151, 154, 157, 160, 163, 166,
169, 198, 201, 204, 207, 210,
213, 216, 219, 222, 225, 228,
231, 234, 237
238
18, 19, 42, 43, 45, 46, 48, 49,
54 (512MB, 1GB), 55, 68, 76,
102, 125, 126, 134, 135, 146,
147, 155, 156, 161, 162, 164,
165, 167, 168, 171, 173, 174,
196 (512MB), 202, 203, 211,
212, 223, 224, 232, 233
VDD
VDDQ
VREF
VSS
VDDSPD
NC
Type
Input
Input
I/O
Description
Serial clock for presence-detect: SCL is used to synchronize the
presence-detect data transfer to and from the module.
Presence-detect address inputs: These pins are used to configure
the presence-detect device.
Data Input/output: Bidirectional data bus.
I/O Data strobe: Output with read data, input with write data for
source synchronous operation. Edge-aligned with read data,
center aligned with write data. DQS# is only used when
differential data strobe mode is enabled via the LOAD MODE
command.
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: +1.8V ±0.1V.
Supply DQ Power supply: +1.8V ±0.1V.
Supply SSTL_18 reference voltage.
Supply Ground.
Supply Serial EEPROM positive power supply: +1.7V to +3.6V.
– No connect: These pins should be left unconnected.
PDF: 09005aef80f09084/Source: 09005aef80f09068
HTF16C64_128_256x64AG.fm - Rev. D 5/06 EN
5 Micron Technology, Inc., reserves the right to change products or specifications without notice.
©2003 Micron Technology, Inc. All rights reserved.


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