PDF: 09005aef80e5e752/Source: 09005aef80e5e626 Micron Technology, Inc., reserves the right to change products or specifications without notice.
HTF18C64_128_256x72.fm - Rev. E 3/07 EN
17 ©2003 Micron Technology, Inc. All rights reserved.
512MB, 1GB, 2GB (x72, ECC, SR) 240-Pin DDR2 SDRAM RDIMM
Serial Presence-Detect
Notes: 1. The 512MB module is not available in -80E, -800, or -667 speed grades.
2. The
t
RC SPD values shown are JEDEC DDR2 device specification values. The actual Micron
DDR2 device specification is
t
RC = 55ns for all speed grades.
47–61
Optional features, not supported
00 00 00
62
SPD revision
Release 1.2 12 12 12
63
Checksum for bytes 0–62
ECC/ECC and parity
-80E
-800
-667
-53E
-40E
–
–
–
F5/F9
5C/60
2E/32
CF/D3
EA/EE
95/99
FC/00
4F/53
F0/F4/
0B/0F
B6/BA
1D/21
64
Manufacturer’s JEDEC ID code
MICRON 2C 2C 2C
65–71
Manufacturer’s JEDEC ID code
(continued) FF FF FF
72
Manufacturing location
1–12 01–0C 01–0C 01–0C
73–90
Module part number (ASCII)
– Variable data Variable data Variable data
91
PCB identification code
1–9 01–09 01–09 01–09
92
Identification code (continued)
00000 00
93
Year of manufacture in BCD
– Variable data Variable data Variable data
94
Week of manufacture in BCD
– Variable data Variable data Variable data
95–98
Module serial number
– Variable data Variable data Variable data
99–127
Reserved for manufacturer-specific data
00 00 00
128–255
Reserved for customer-specific data
FF FF FF
Table 19: Serial Presence-Detect Matrix (continued)
Byte Description Entry (Version)
512MB
1
1GB 2GB
