mt18vddt12872ag-335 Micron Semiconductor Products, mt18vddt12872ag-335 Datasheet - Page 5

• Manufacturer Part Number: mt18vddt12872ag-335
• Description: 256mb, 512mb, 1gb, 2gb X72, Ecc, Dr 184-pin Ddr Sdram Udimm
• Manufacturer: Micron Semiconductor Products

Table 5:
Pin numbers may not correlate with symbols; refer to Pin Assignment Tables on page 3 for more information
pdf: 09005aef80814e61, source: 09005aef807f8acb
DD18C32_64_128_256x72AG.fm - Rev. B 9/04 EN
24, 28, 31, 33, 35, 39, 40, 53,
55, 57, 60, 61, 64, 68, 69, 72,
73, 79, 80, 83, 84, 87, 88, 94,
110, 114, 117, 121, 123, 126,
127, 131, 133, 146, 147, 150,
151, 153, 155, 161, 162, 165,
166, 170, 171, 174, 175, 178,
104, 112, 128, 136, 143, 156,
124, 132, 139, 145, 152, 160,
103, 113, 115 (256MB), 163,
2, 4, 6, 8, 12, 13, 19, 20, 23,
3, 11, 18, 26, 34, 42, 50, 58,
66, 74, 81, 89, 93, 100, 116,
167 (256MB, 512MB, 1GB),
7, 38, 46, 70, 85, 108, 120,
9, 10, 71, 82, 90, 101, 102,
95, 98, 99, 105, 106, 109,
15, 22, 30, 54, 62, 77, 96,
PIN NUMBERS
164, 172, 180
181,182, 183
148, 168
179
176
184
173
92
91
1
Pin Descriptions (Continued)
DQ0-DQ63
SYMBOL
SA0–SA2
V
V
SDA
V
V
DDSPD
SCL
V
NC
DDQ
REF
DD
SS
Output
Output
Supply
Supply
Supply
Supply
Supply
Input/
Input/
TYPE
Input
Input
256MB, 512MB, 1GB, 2GB (x72, ECC, DR)
—
Data I/Os: Data bus.
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.
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.
SSTL_2 reference voltage.
DQ Power Supply: +2.5V ±0.2V.
Power Supply: +2.5V ±0.2V.
Ground.
Serial EEPROM positive power supply: +2.3V to +3.6V.
No Connect: These pins should be left unconnected.
5
Micron Technology, Inc., reserves the right to change products or specifications without notice.
184-PIN DDR SDRAM UDIMM
DESCRIPTION
©2004 Micron Technology, Inc. All rights reserved.