256MB, 512MB, 1GB (x72, ECC, DR), PC3200
184-PIN DDR SDRAM UDIMM
Ta b le 5:
Pin De scrip t io n s (Co n t in u e d )
Pin numbers may not correlate with symbols; refer to Pin Assignment Tables on page 3 for more information
PIN NUMBERS
SYMBOL
TYPE
DESCRIPTION
2, 4, 6, 8, 12, 13, 19, 20, 23,
24, 28, 31, 33, 35, 39, 40, 53,
55, 57, 60, 61, 64, 68, 69, 72,
73, 79, 80, 83, 84, 87, 88, 94,
95, 98, 99, 105, 106, 109,
110, 114, 117, 121, 123, 126,
127, 131, 133, 146, 147, 150,
151, 153, 155, 161, 162, 165,
166, 170, 171, 174, 175, 178,
179
DQ0–DQ63
Input/
Output
Data I/Os: Data bus.
92
181,182, 183
91
SCL
SA0–SA2
SDA
Input
Input
Input/
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
Output transfer addresses and data into and out of the presence-
detect portion of the module.
1
VREF
Supply
Supply
SSTL_2 reference voltage.
15, 22, 30, 54, 62, 77, 96,
104, 112, 128, 136, 143, 156,
164, 172, 180
VDDQ
DQ Power Supply: +2.6V ±0.1V.
7, 38, 46, 70, 85, 108, 120,
148, 168
VDD
VSS
Supply
Supply
Power Supply: +2.6V ±0.1V.
Ground.
3, 11, 18, 26, 34, 42, 50, 58,
66, 74, 81, 89, 93, 100, 116,
124, 132, 139, 145, 152, 160,
176
184
VDDSPD
NC
Supply
—
Serial EEPROM positive power supply: +2.3V to +3.6V.
No Connect: These pins should be left unconnected.
9, 10, 71, 82, 90, 101, 102,
103, 113, 115 (256MB), 163,
167, 173
pdf: 09005aef80814e61, source: 09005aef80a43eed
DDA18C32_64_128x72AG.fm - Rev. E 9/04 EN
Micron Technology, Inc., reserves the right to change products or specifications without notice.
5
©2004 Micron Technology, Inc.