HYS64T256020EU-25F-B Datasheet, PDF (35/60 Pages) Qimonda AG – 240-Pin unbuffered DDR2 SDRAM Modules

Internet Data Sheet
4
SPD Codes
HYS[64/72]T256020EU-[25F/2.5/3/3S/3.7]-B
Unbuffered DDR2 SDRAM Module
This chapter lists all hexadecimal byte values stored in the EEPROM of the products described in this data sheet. SPD stands
for serial presence detect. All values with XX in the table are module specific bytes which are defined during production.
List of SPD Code Tables
• Table 25 “SPD codes for HYS[64/72]T256020EU–25F–B” on Page 35
• Table 26 “SPD codes for HYS[64/72]T256020EU–2.5–B” on Page 39
• Table 27 “SPD codes for HYS[64/72]T256020EU–3–B” on Page 43
• Table 28 “SPD codes for HYS[64/72]T256020EU–3S–B” on Page 47
• Table 29 “SPD codes for HYS[64/72]T256020EU–3.7–B” on Page 51
Product Type
Organization
Label Code
JEDEC SPD Revision
Byte#
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Description
Programmed SPD Bytes in EEPROM
Total number of Bytes in EEPROM
Memory Type (DDR2)
Number of Row Addresses
Number of Column Addresses
DIMM Rank and Stacking Information
Data Width
Not used
Interface Voltage Level
t_CK @ CL_MAX (Byte 18) [ns]
t_AC SDRAM @ CL_MAX (Byte 18) [ns]
Error Correction Support (non-ECC, ECC)
Refresh Rate and Type
Primary SDRAM Width
Error Checking SDRAM Width
Not used
Burst Length Supported
Number of Banks on SDRAM Device
TABLE 25
SPD codes for HYS[64/72]T256020EU–25F–B
HYS64T256020EU–25F–B HYS72T256020EU–25F–B
2 GByte
2 GByte
×64
×72
2 Ranks (×8)
2 Ranks (×8)
PC2–6400U–555
PC2–6400E–555
Rev. 1.2
Rev. 1.2
HEX
80
08
08
0E
0A
61
40
00
05
25
40
00
82
08
00
00
0C
08
HEX
80
08
08
0E
0A
61
48
00
05
25
40
02
82
08
08
00
0C
08
Rev. 1.0, 2006-10
35
10262006-SX8C-DEY8