512MB, 1GB, 2GB: (x64, DR) 240-Pin DDR2 SDRAM UDIMM
Serial Presence-Detect
Table 15: Serial Presence-Detect Matrix
“1”/“0”: Serial Data, “driven to HIGH”/“driven to LOW”; table notes located on page 19
Byte
Description
Entry (Version) MT16HTF6464A MT16HTF12864A MT16HTF25664A
64
65-71
72
MICRON
(Continued)
01–12
2C
FF
2C
FF
2C
FF
Manufacturer’s JEDEC ID code
Manufacturer’s JEDEC ID code
Manufacturing location
01–0C
01–0C
01–0C
73-90
91
Variable data
01–09
Variable data
01–09
Variable data
01–09
Module part number (ASCII)
PCB identification code
1–9
0
92
00
00
00
Identification code (continued)
Year of manufacture in BCD
Week of manufacture in BCD
Module serial number
93
Variable data
Variable data
Variable data
–
Variable data
Variable data
Variable data
–
Variable data
Variable data
Variable data
–
94
95-98
99-127
Manufacturer-specific data (RSVD)
Notes: 1. The tRAS SPD value shown is based on the JEDEC standard value of 45ns; the actual device
specification is tRAS = 40ns.
PDF: 09005aef80f09084/Source: 09005aef80f09068
HTF16C64_128_256x64AG.fm - Rev. D 5/06 EN
Micron Technology, Inc., reserves the right to change products or specifications without notice.
©2003 Micron Technology, Inc. All rights reserved.
19
MICRON [ MICRON TECHNOLOGY ]
